A system for processing audio data, comprising a diffusion data filter coupled to a source of digital audio data, the diffusion data filter configured to generate filtered audio data from the digital audio data. A delay coupled to the source of digital audio data, the delay configured to delay the digital audio data by a predetermined amount. A first multiplier configured to multiply the filtered audio data by a distance gain parameter to generate a first intermediate output. A second multiplier configured to multiply the delayed digital audio data by a complementary distance gain parameter to generate a second intermediate output. An adder configured to add the first intermediate output and the second intermediate output to generate an audio output.
An encoder operable to filter audio signals into a plurality of frequency band components, generate quantized digital components for each band, identify a potential for pre-echo events within the generated quantized digital components, generate an approximate signal by decoding the quantized digital components using inverse pulse code modulation, generate an error signal by comparing the approximate signal with the sampled audio signal, and process the error signal and quantized digital components. The encoder operable to process the error signal by processing delayed audio signals and Q band values, determining the potential for pre-echo events from the Q band values, and determining scale factors and MDCT block sizes for the potential for pre-echo events.
G10L 19/025 - Detection of transients or attacks for time/frequency resolution switching
G10L 19/00 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocodersCoding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
G10L 19/008 - Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
G10L 19/02 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocodersCoding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
G10L 19/032 - Quantisation or dequantisation of spectral components
H04B 1/66 - Details of transmission systems, not covered by a single one of groups Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signalsDetails of transmission systems, not covered by a single one of groups Details of transmission systems not characterised by the medium used for transmission for improving efficiency of transmission
H04B 3/20 - Reducing echo effects or singingOpening or closing transmitting pathConditioning for transmission in one direction or the other
H04B 3/21 - Reducing echo effects or singingOpening or closing transmitting pathConditioning for transmission in one direction or the other using a set of bandfilters
H04N 19/44 - Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
H04N 19/625 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using discrete cosine transform [DCT]
H04N 21/233 - Processing of audio elementary streams
3.
SYSTEM AND METHOD FOR DIGITAL SIGNAL PROCESSING USING ADAPTIVE SOFT CLIPPING WITH LOOKAHEAD
A system for processing an audio signal, comprising one or more algorithms operating on a processor and configured to generate a block of audio data, determine whether a previous block of audio data was processed with dipping active, scan the block of audio data to generate lookahead information if the previous block of audio data was not processed with clipping active and use adaptive soft clipping if the previous block of audio data was processed with clipping active.
The present invention provides a method that comprises accepting a plurality of positional data with corresponding times of the motion, determining one or more continuous positional functions that together represent an approximation of path of the positional data, and determining, for each positional function, one or more time functions that together represent an approximation of the times for the positional data corresponding to the positional functions. The present invention provides an apparatus that comprises an input device and a computer system configured to accept the motion signals generated by the input device, determine one or more continuous positional functions that together represent an approximation of the path of the positional data, and determine, for each positional function, one or more time functions that together represent an approximation of the times for the positional data corresponding to the positional functions.
G06F 3/038 - Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
G06F 3/0346 - Pointing devices displaced or positioned by the userAccessories therefor with detection of the device orientation or free movement in a 3D space, e.g. 3D mice, 6-DOF [six degrees of freedom] pointers using gyroscopes, accelerometers or tilt-sensors
5.
SYSTEMS AND METHODS FOR STABILIZING MAGNETIC FIELD OF INERTIAL MEASUREMENT UNIT
A method for stabilizing a magnetic field of an inertial measurement unit (IMU), is provided that includes initializing accelerometer and gyroscope (AG) heading data for the IMU and initializing accelerometer, gyroscope and magnetometer (AGM) heading data for the IMU. Determining whether a tracking state exists and completing processing of the AG heading data and the AGM heading data if the tracking state does not exist. Calculating a magnetic field error if the tracking state exists.
G01C 21/16 - NavigationNavigational instruments not provided for in groups by using measurement of speed or acceleration executed aboard the object being navigatedDead reckoning by integrating acceleration or speed, i.e. inertial navigation
6.
System and method for processing audio data into a plurality of frequency components
An encoder operable to filter audio signals into a plurality of frequency band components, generate quantized digital components for each band, identify a potential for pre-echo events within the generated quantized digital components, generate an approximate signal by decoding the quantized digital components using inverse pulse code modulation, generate an error signal by comparing the approximate signal with the sampled audio signal, and process the error signal and quantized digital components. The encoder operable to process the error signal by processing delayed audio signals and Q band values, determining the potential for pre-echo events from the Q band values, and determining scale factors and MDCT block sizes for the potential for pre-echo events. The encoder operable to transform the error signal into high resolution frequency components using the MDCT block sizes, quantize the scale factors and frequency components, and encode the quantized lines, block sizes, and quantized scale factors for inclusion in the bitstream.
H04N 19/625 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using discrete cosine transform [DCT]
H04N 19/44 - Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
H04B 1/66 - Details of transmission systems, not covered by a single one of groups Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signalsDetails of transmission systems, not covered by a single one of groups Details of transmission systems not characterised by the medium used for transmission for improving efficiency of transmission
H04B 3/20 - Reducing echo effects or singingOpening or closing transmitting pathConditioning for transmission in one direction or the other
G10L 19/00 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocodersCoding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
G10L 19/032 - Quantisation or dequantisation of spectral components
G10L 19/008 - Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
G10L 19/02 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocodersCoding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
H04N 21/233 - Processing of audio elementary streams
H04B 3/21 - Reducing echo effects or singingOpening or closing transmitting pathConditioning for transmission in one direction or the other using a set of bandfilters
A method for loudness equalization is provided that includes receiving input loudness data at an audio processing system. Converting gain data of the input loudness data to a linear scale at the audio processing system. Determining a reciprocal of a gain-linear loudness value as a function of the converted gain data using the audio processing system. Determining a compression ratio using the audio processing system. Performing temporal smoothing and look ahead processing using the audio processing system. Outputting gain data as a function of the temporal smoothing and look ahead processing using the audio processing system.
G10L 19/02 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocodersCoding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
H03G 9/00 - Combinations of two or more types of control, e.g. gain control and tone control
H03G 9/02 - Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers
H04R 3/04 - Circuits for transducers for correcting frequency response
A system for processing audio data, comprising a diffusion data filter coupled to a source of digital audio data, the diffusion data filter configured to generate filtered audio data from the digital audio data. A delay coupled to the source of digital audio data, the delay configured to delay the digital audio data by a predetermined amount. A first multiplier configured to multiply the filtered audio data by a distance gain parameter to generate a first intermediate output. A second multiplier configured to multiply the delayed digital audio data by a complementary distance gain parameter to generate a second intermediate output. An adder configured to add the first intermediate output and the second intermediate output to generate an audio output.
An encoder operable to filter audio signals into a plurality of frequency band components, generate quantized digital components for each band, identify a potential for pre-echo events within the generated quantized digital components, generate an approximate signal by decoding the quantized digital components using inverse pulse code modulation, generate an error signal by comparing the approximate signal with the sampled audio signal, and process the error signal and quantized digital components. The encoder operable to process the error signal by processing delayed audio signals and Q band values, determining the potential for pre-echo events from the Q band values, and determining scale factors and MDCT block sizes for the potential for pre-echo events. The encoder operable to transform the error signal into high resolution frequency components using the MDCT block sizes, quantize the scale factors and frequency components, and encode the quantized lines, block sizes, and quantized scale factors for inclusion in the bitstream.
H04N 19/625 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using discrete cosine transform [DCT]
H04N 19/44 - Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
H04B 1/66 - Details of transmission systems, not covered by a single one of groups Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signalsDetails of transmission systems, not covered by a single one of groups Details of transmission systems not characterised by the medium used for transmission for improving efficiency of transmission
H04B 3/20 - Reducing echo effects or singingOpening or closing transmitting pathConditioning for transmission in one direction or the other
G10L 19/025 - Detection of transients or attacks for time/frequency resolution switching
G10L 19/00 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocodersCoding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
G10L 19/032 - Quantisation or dequantisation of spectral components
G10L 19/008 - Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
G10L 19/02 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocodersCoding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
H04N 21/233 - Processing of audio elementary streams
H04B 3/21 - Reducing echo effects or singingOpening or closing transmitting pathConditioning for transmission in one direction or the other using a set of bandfilters
10.
Methods and apparatuses for producing smooth representations of input motion in time and space
The present invention provides a method and apparatus that are directed to accepting a plurality of positional data with corresponding times of the motion, determining one or more continuous positional functions that together represent an approximation of path of the positional data, and determining, for each positional function, one or more time functions that together represent an approximation of the times for the positional data corresponding to the positional functions.
G06F 3/038 - Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
G06F 3/0346 - Pointing devices displaced or positioned by the userAccessories therefor with detection of the device orientation or free movement in a 3D space, e.g. 3D mice, 6-DOF [six degrees of freedom] pointers using gyroscopes, accelerometers or tilt-sensors
A method for loudness equalization is provided that includes receiving input loudness data at an audio processing system. Converting gain data of the input loudness data to a linear scale at the audio processing system. Determining a reciprocal of a gain-linear loudness value as a function of the converted gain data using the audio processing system. Determining a compression ratio using the audio processing system. Performing temporal smoothing and look ahead processing using the audio processing system. Outputting gain data as a function of the temporal smoothing and look ahead processing using the audio processing system.
A method for stabilizing a magnetic field of an inertial measurement unit (IMU), is provided that includes initializing accelerometer and gyroscope (AG) heading data for the IMU and initializing accelerometer, gyroscope and magnetometer (AGM) heading data for the IMU. Determining whether a tracking state exists and completing processing of the AG heading data and the AGM heading data if the tracking state does not exist. Calculating a magnetic field error if the tracking state exists.
A method for stabilizing a magnetic field of an inertial measurement unit (IMU), is provided that includes initializing accelerometer and gyroscope (AG) heading data for the IMU and initializing accelerometer, gyroscope and magnetometer (AGM) heading data for the IMU. Determining whether a tracking state exists and completing processing of the AG heading data and the AGM heading data if the tracking state does not exist. Calculating a magnetic field error if the tracking state exists.
G01C 21/16 - NavigationNavigational instruments not provided for in groups by using measurement of speed or acceleration executed aboard the object being navigatedDead reckoning by integrating acceleration or speed, i.e. inertial navigation
An encoder operable to filter audio signals into a plurality of frequency band components, generate quantized digital components for each band, identify a potential for pre-echo events within the generated quantized digital components, generate an approximate signal by decoding the quantized digital components using inverse pulse code modulation, generate an error signal by comparing the approximate signal with the sampled audio signal, and process the error signal and quantized digital components. The encoder operable to process the error signal by processing delayed audio signals and Q band values, determining the potential for pre-echo events from the Q band values, and determining scale factors and MDCT block sizes for the potential for pre-echo events. The encoder operable to transform the error signal into high resolution frequency components using the MDCT block sizes, quantize the scale factors and frequency components, and encode the quantized lines, block sizes, and quantized scale factors for inclusion in the bitstream.
H04N 19/625 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using discrete cosine transform [DCT]
H04N 19/44 - Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
H04B 1/66 - Details of transmission systems, not covered by a single one of groups Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signalsDetails of transmission systems, not covered by a single one of groups Details of transmission systems not characterised by the medium used for transmission for improving efficiency of transmission
G10L 19/025 - Detection of transients or attacks for time/frequency resolution switching
G10L 19/00 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocodersCoding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
G10L 19/032 - Quantisation or dequantisation of spectral components
G10L 19/008 - Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
G10L 19/02 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocodersCoding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
H04B 3/21 - Reducing echo effects or singingOpening or closing transmitting pathConditioning for transmission in one direction or the other using a set of bandfilters
15.
Systems and methods for processing high frequency audio signal
A method for encoding an audio signal, comprising using one or more algorithms operating on a processor to filter the audio signal into two output signals, wherein each output signal has a sampling rate that is equal to a sampling rate of the audio signal, and wherein one of the output signals includes high frequency data. Using one or more algorithms operating on the processor to window the high frequency data by selecting a set of the high frequency data. Using one or more algorithms operating on the processor to determine a set of linear predictive coding (LPC) coefficients for the windowed data. Using one or more algorithms operating on the processor to generate energy scale values for the windowed data. Using one or more algorithms operating on the processor to generate an encoded high frequency bitstream.
A method for encoding an audio signal, comprising using one or more algorithms operating on a processor to filter the audio signal into two output signals, wherein each output signal has a sampling rate that is equal to a sampling rate of the audio signal, and wherein one of the output signals includes high frequency data. Using one or more algorithms operating on the processor to window the high frequency data by selecting a set of the high frequency data. Using one or more algorithms operating on the processor to determine a set of linear predictive coding (LPC) coefficients for the windowed data. Using one or more algorithms operating on the processor to generate energy scale values for the windowed data. Using one or more algorithms operating on the processor to generate an encoded high frequency bitstream.
The present invention provides a method that includes accepting a plurality of positional data with corresponding times of the motion, determining one or more continuous positional functions that together represent an approximation of path of the positional data, and determining, for each positional function, one or more time functions that together represent an approximation of the times for the positional data corresponding to the positional functions.
G06F 3/038 - Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
G06F 3/0346 - Pointing devices displaced or positioned by the userAccessories therefor with detection of the device orientation or free movement in a 3D space, e.g. 3D mice, 6-DOF [six degrees of freedom] pointers using gyroscopes, accelerometers or tilt-sensors
An encoder operable to filter audio signals into a plurality of frequency band components, generate quantized digital components for each band, identify a potential for pre-echo events within the generated quantized digital components, generate an approximate signal by decoding the quantized digital components using inverse pulse code modulation, generate an error signal by comparing the approximate signal with the sampled audio signal, and process the error signal and quantized digital components. The encoder operable to process the error signal by processing delayed audio signals and Q band values, determining the potential for pre-echo events from the Q band values, and determining scale factors and MDCT block sizes for the potential for pre-echo events. The encoder operable to transform the error signal into high resolution frequency components using the MDCT block sizes, quantize the scale factors and frequency components, and encode the quantized lines, block sizes, and quantized scale factors for inclusion in the bitstream.
H04N 19/625 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using discrete cosine transform [DCT]
H04N 19/44 - Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
H04B 1/66 - Details of transmission systems, not covered by a single one of groups Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signalsDetails of transmission systems, not covered by a single one of groups Details of transmission systems not characterised by the medium used for transmission for improving efficiency of transmission
G10L 19/025 - Detection of transients or attacks for time/frequency resolution switching
G10L 19/00 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocodersCoding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
G10L 19/032 - Quantisation or dequantisation of spectral components
G10L 19/008 - Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
G10L 19/02 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocodersCoding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
H04L 29/06 - Communication control; Communication processing characterised by a protocol
H04N 21/233 - Processing of audio elementary streams
H04B 3/21 - Reducing echo effects or singingOpening or closing transmitting pathConditioning for transmission in one direction or the other using a set of bandfilters
19.
METHODS AND APPARATUSES FOR PRODUCING SMOOTH REPRESENTATIONS OF INPUT MOTION IN TIME AND SPACE
Methods and apparatuses that accept user input of motion and produce a representation of the motion smoothly and compactly. The present invention provides a method that comprises accepting a plurality of positional data with corresponding times of the motion, determining one or more continuous positional functions that together represent an approximation of path of the positional data, and determining, for each positional function, one or more time functions that together represent an approximation of the times for the positional data corresponding to the positional functions. The present invention provides an apparatus that comprises an input device and a computer system configured to accept the motion signals generated by the input device, determine one or more continuous positional functions that together represent an approximation of the path of the positional data, and determine, for each positional function, one or more time functions that together represent an approximation of the times for the positional data corresponding to the positional functions.
A system, comprising a clock generating a timing signal, a magnetometer coupled to the clock and configured to receive the timing signal and to generate first heading data and a gyroscope coupled to the clock and configured to receive the timing signal and to generate second heading data. The system further includes a first adder coupled to the magnetometer and gyroscope and configured to determine a difference signal as a function of the first heading data and the second heading data and a constrain data system coupled to the first adder and configured to apply a limit to the difference signal. A combine delta system is coupled to the constrain data system and configured to combine two or more of the constrained data values to generate a combined delta signal, and a second adder coupled to the gyroscope and the combine delta system and configured to add the combined delta signal to the second heading data.
G01C 21/18 - Stabilised platforms, e.g. by gyroscope
G01C 21/06 - NavigationNavigational instruments not provided for in groups by terrestrial means involving measuring of drift angleNavigationNavigational instruments not provided for in groups by terrestrial means involving correction for drift
G01R 33/00 - Arrangements or instruments for measuring magnetic variables
G01C 25/00 - Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
42 - Scientific, technological and industrial services, research and design
Goods & Services
Communication services, namely, transmission of voice,
audio, visual images and data by telecommunications
networks, wireless communication networks, the Internet,
information services networks and data networks; electronic
transmission and streaming of digital media content for
others via global and local computer networks; streaming of
data; streaming of audio, visual and audiovisual material
via a global computer network; telecommunication services,
namely, transmission of voice, data, graphics, images, audio
and video by means of telecommunications networks, wireless
communication networks, and the Internet. Computer services, namely, digital formatting and
compression of music and video images into downloadable
media; design and development of software and hardware for
compression and decompression of multimedia contents;
digital compression of computer data; digital compression of
audio and video data; providing temporary use of on-line
non-downloadable software and applications for users to
process, transcode, convert, encode, decode, manipulate and
distribute digital audio, video and audiovisual files;
providing a web site featuring technology that enables users
to upload and download music and videos (terms considered
too vague by the international Bureau - rule 13 (2) (b) of
the Common Regulations).
A codec operable to process audio data and related data. The codec further operable to receive at least one of an audio, audio auxiliary, program configuration, and data signals from a program source, the audio signals including at least one of single channel audio and multi-channel audio signals, audio auxiliary signals including spatial and motion data and environmental characteristics, the data signals including program related data. The codec further operable to generate a non-transitory encoded bitstream, wherein the bitstream includes at least one of synchronization command data and at least one of a program command data, audio channel data, audio auxiliary data, program content data, and an end of stream data, wherein the encoded bitstream includes an identifier for defining packet type for each data component. The synchronization command data includes a stream start flag defining an entry point for decoding the bitstream and further provides sample rate for the encoded bitstream.
H04B 3/21 - Reducing echo effects or singingOpening or closing transmitting pathConditioning for transmission in one direction or the other using a set of bandfilters
H04N 19/625 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using discrete cosine transform [DCT]
H04N 19/44 - Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
H04B 1/66 - Details of transmission systems, not covered by a single one of groups Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signalsDetails of transmission systems, not covered by a single one of groups Details of transmission systems not characterised by the medium used for transmission for improving efficiency of transmission
H04B 3/20 - Reducing echo effects or singingOpening or closing transmitting pathConditioning for transmission in one direction or the other
G10L 19/02 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocodersCoding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
H04L 29/06 - Communication control; Communication processing characterised by a protocol
H04N 21/233 - Processing of audio elementary streams
G10L 19/025 - Detection of transients or attacks for time/frequency resolution switching
G10L 19/00 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocodersCoding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
G10L 19/032 - Quantisation or dequantisation of spectral components
G10L 19/008 - Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
An encoder operable to filter audio signals into a plurality of frequency band components, generate quantized digital components for each band, identify a potential for pre-echo events within the generated quantized digital components, generate an approximate signal by decoding the quantized digital components using inverse pulse code modulation, generate an error signal by comparing the approximate signal with the sampled audio signal, and process the error signal and quantized digital components. The encoder operable to process the error signal by processing delayed audio signals and Q band values, determining the potential for pre-echo events from the Q band values, and determining scale factors and MDCT block sizes for the potential for pre-echo events. The encoder operable to transform the error signal into high resolution frequency components using the MDCT block sizes, quantize the scale factors and frequency components, and encode the quantized lines, block sizes, and quantized scale factors for inclusion in the bitstream.
H04N 19/625 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using discrete cosine transform [DCT]
H04N 19/44 - Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
H04B 1/66 - Details of transmission systems, not covered by a single one of groups Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signalsDetails of transmission systems, not covered by a single one of groups Details of transmission systems not characterised by the medium used for transmission for improving efficiency of transmission
H04B 3/20 - Reducing echo effects or singingOpening or closing transmitting pathConditioning for transmission in one direction or the other
G10L 19/02 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocodersCoding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
H04L 29/06 - Communication control; Communication processing characterised by a protocol
H04N 21/233 - Processing of audio elementary streams
H04B 3/21 - Reducing echo effects or singingOpening or closing transmitting pathConditioning for transmission in one direction or the other using a set of bandfilters
G10L 19/025 - Detection of transients or attacks for time/frequency resolution switching
G10L 19/00 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocodersCoding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
G10L 19/032 - Quantisation or dequantisation of spectral components
G10L 19/008 - Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
A decoder operable to decode audio signals. The decoder operable to receive an encoded bitstream that includes bitstream synchronization command data and program command data and process the encoded bitstream and identify within the bitstream the synchronization command data. The decoder further operable to decode the program command packet and at least one program related channel data using information provided in the synchronization command data and decode program related channel data using information provided in the program command data.
H04N 19/625 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using discrete cosine transform [DCT]
H04N 19/44 - Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
H04B 1/66 - Details of transmission systems, not covered by a single one of groups Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signalsDetails of transmission systems, not covered by a single one of groups Details of transmission systems not characterised by the medium used for transmission for improving efficiency of transmission
H04B 3/20 - Reducing echo effects or singingOpening or closing transmitting pathConditioning for transmission in one direction or the other
G10L 19/02 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocodersCoding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
H04N 21/233 - Processing of audio elementary streams
H04B 3/21 - Reducing echo effects or singingOpening or closing transmitting pathConditioning for transmission in one direction or the other using a set of bandfilters
G10L 19/025 - Detection of transients or attacks for time/frequency resolution switching
G10L 19/00 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocodersCoding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
G10L 19/032 - Quantisation or dequantisation of spectral components
G10L 19/008 - Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
A sub-band coder operable to process audio samples for use in a digital encoder. The sub-band coder comprising application code instructions executable on a processor configured to cause the coder to filter the audio samples into a plurality of frequency band components using at least one Pseudo-Quadrature Mirror Filter (PQMF) and modulate the plurality of frequency band components into a plurality of quantized band values using a pulse code modulation technique. The application code instructions further operable to cause the coder to decode the plurality of quantized band values into an approximation signal using an inverse pulse code modulation technique and at least one Inverse Pseudo-Quadrature Mirror Filter (IPQMF). The application code instructions operable to cause the coder generates an output for use by the digital encoder that includes the plurality of quantized band values, the approximation signal, and a plurality of encoded quantized band values.
H04N 19/625 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using discrete cosine transform [DCT]
H04N 19/44 - Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
H04B 1/66 - Details of transmission systems, not covered by a single one of groups Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signalsDetails of transmission systems, not covered by a single one of groups Details of transmission systems not characterised by the medium used for transmission for improving efficiency of transmission
H04B 3/20 - Reducing echo effects or singingOpening or closing transmitting pathConditioning for transmission in one direction or the other
G10L 19/02 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocodersCoding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
H04L 29/06 - Communication control; Communication processing characterised by a protocol
H04B 3/21 - Reducing echo effects or singingOpening or closing transmitting pathConditioning for transmission in one direction or the other using a set of bandfilters
G10L 19/025 - Detection of transients or attacks for time/frequency resolution switching
G10L 19/00 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocodersCoding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
G10L 19/032 - Quantisation or dequantisation of spectral components
G10L 19/008 - Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
An encoder generates quantized signal words based on a difference signal. The encoder includes an adaptive quantizer. A step size applied by the adaptive quantizer is generated in a feedback loop and based on a loading factor and quantized signal words generated by the adaptive quantizer. The encoder includes coding circuitry which generates code words based on quantized signal words generated by the adaptive quantizer. The coding circuitry generates an escape code in response to a quantized signal word not being associated with a corresponding coding code word.
G10L 19/04 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocodersCoding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
H03M 7/38 - Conversion to or from differential modulation with several bits, i.e. the difference between successive samples being coded by more than one bit adaptive
G10L 19/00 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocodersCoding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
An encoder includes a low-pass filter to filter input audio signals. The low-pass filter has fixed filter coefficients. The encoder generates quantized signals based on a difference signal. The encoder includes an adaptive quantizer and a decoder to generate feedback signals. The decoder has an inverse quantizer and a predictor. The predictor has fixed control parameters which are based on a frequency response of the low-pass filter. The predictor may include a finite impulse response filter having fixed filter coefficients. The decoder may include an adaptive noise shaping filter coupled between the low-pass filter and the encoder. The adaptive noise shaping filter flattens signals within a frequency spectrum corresponding to a frequency spectrum of the low-pass filter.
G10L 19/04 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocodersCoding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
H03M 7/38 - Conversion to or from differential modulation with several bits, i.e. the difference between successive samples being coded by more than one bit adaptive
H03M 3/04 - Differential modulation with several bits
A decoder generates decoded signals based on quantized signals. The decoder includes an inverse quantizer and a predictor circuit. The quantized signals are generated in an encoder by low-pass filtering an input signal and encoding the filtered signal using adaptive differential pulse code modulation. The predictor circuit has filter coefficients based on a frequency response of the low-pass filter used to filter the input signal.
H03M 7/38 - Conversion to or from differential modulation with several bits, i.e. the difference between successive samples being coded by more than one bit adaptive
G10L 19/04 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocodersCoding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
G10L 19/00 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocodersCoding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
Communication services, namely, transmission of voice, audio, visual images and data by telecommunications networks, wireless communication networks, the Internet, information services networks and data networks; Electronic transmission and streaming of digital media content for others via global and local computer networks; Streaming of data; Streaming of audio, visual and audiovisual material via a global computer network; Telecommunication services, namely, transmission of voice, data, graphics, images, audio and video by means of telecommunications networks, wireless communication networks, and the Internet
42 - Scientific, technological and industrial services, research and design
Goods & Services
Computer services, namely, digital formatting and compression of music and video images into downloadable media; Design and development of software and hardware for compression and decompression of multimedia contents; Digital compression of computer data; Digital compression of audio and video data; Providing temporary use of on-line non-downloadable software and applications for users to process, transcode, convert, encode, decode, manipulate and distribute digital audio, video and audiovisual files
