Techniques described herein generally relate to generating fluid flow in a micro structure. In some examples, a micropump is described that includes at least two membranes and a spacer. The membranes can be configured to oscillate along a first and second directional path to generate fluid flow.
Techniques described herein generally relate to generating fluid flow in a micro structure. In some examples, a micropump is described that includes at least two membranes and a spacer. The membranes can be configured to oscillate along a first and second directional path to generate fluid flow.
An ultrasonic pump includes a mechanical layer with at least one membrane; and an acoustic channel. A portion of the at least one membrane comprises at least a part of the acoustic channel so that a movement of the membrane changes the dimension of the acoustic channel. The membrane is configured to oscillate at ultrasonic frequencies and generate at least one audio signal.
H04R 1/28 - Transducer mountings or enclosures designed for specific frequency response; Transducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
An ultrasonic pump includes a mechanical layer with at least one membrane; and an acoustic channel. A portion of the at least one membrane comprises at least a part of the acoustic channel so that a movement of the membrane changes the dimension of the acoustic channel. The membrane is configured to oscillate at ultrasonic frequencies and generate at least one audio signal.
H04R 1/28 - Transducer mountings or enclosures designed for specific frequency response; Transducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
H04R 31/00 - Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
An ultrasonic pump includes a first layer with at a membrane, a spoke and an anchor, wherein the membrane is in contact with the spoke and the spoke is in contact with at the anchor; a second layer with at least one second membrane and at least one second anchor wherein the second membrane is in contact with a second anchor and the second membrane includes at least one aperture; a third layer with at least one third membrane, at least one third spoke and at least one third anchor, wherein third membrane is in contact with at least one third spoke and said third spoke is in contact with at least one third anchor. The first, second and third membrane are vertically stacked and the first layer at least one membrane and the third layer at least one membrane are configured to be actuated to generate fluid flow.
Techniques described herein generally relate to generating an audio signal with a speaker device. The speaker device includes a first conductive layer with a plurality of center structures and springs; a second conductive layer with a plurality of perforations; and electrical isolation rings; a third conductive layer with a plurality of center structures and springs; and a dielectric layer. The first, second and third conductive layers are in physical contact with the dielectric layer and are electrically isolated from each other.
Earphones are configured to include an ear-tip to accommodate insertion into an ear canal and provide a leak free or low leakage acoustic connection between a speaker embedded in the earphone body and the ear. The earphone in this disclosure is further configured to attach to an earphone support member which provides either mechanical or user functionality to the earphone.
Techniques described herein generally relate to generating an audio signal with a speaker. In some examples, a speaker device includes an acoustic medium; a time-varying acoustic coupler; and at least one ultrasound source configured to generate an audio modulated acoustic radiation signal. The ultrasound source is acoustically connected to the acoustic medium through the time-varying acoustic coupler and the time-varying acoustic coupler is configured to generate an audio signal from the audio modulated acoustic radiation signal.
H04R 1/28 - Transducer mountings or enclosures designed for specific frequency response; Transducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
Techniques described herein generally relate to generating an audio signal with a speaker. In some examples, a speaker device is described that includes a membrane and a shutter and driver device is configured to receive an audio signal, modulate it and generate electric signals to operate the speaker and generate an acoustic audio signal.
H04R 1/28 - Transducer mountings or enclosures designed for specific frequency response; Transducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
H04R 17/10 - Resonant transducers, i.e. adapted to produce maximum output at a predetermined frequency
Techniques described herein generally relate to generating an audio signal with a speaker. In some examples, a speaker device is described that includes a membrane and a shutter and driver device is configured to receive an audio signal, modulate it and generate electric signals to operate the speaker and generate an acoustic audio signal.
B81B 7/02 - Microstructural systems containing distinct electrical or optical devices of particular relevance for their function, e.g. microelectro-mechanical systems (MEMS)
H04R 1/28 - Transducer mountings or enclosures designed for specific frequency response; Transducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
A speaker array includes a first speaker device having a first membrane and a first acoustic channel, the first membrane being configured to oscillate and generate a first ultrasonic acoustic signal configured to be transmitted at least partially in the first acoustic channel, the first acoustic channel including at least one dimension comparable to a dimension of a viscous boundary layer of air. A second speaker device includes a second membrane and a second acoustic channel, the second membrane being configured to oscillate and generate a second ultrasonic acoustic signal configured to be transmitted at least partially in the second acoustic channel, the second acoustic channel including at least one dimension comparable to the dimension of the viscous boundary layer of air. An audio output of the speaker array is the combined output of at least the first speaker device and the second speaker device.
Techniques described herein generally relate to generating an audio signal with a speaker. In some examples, a speaker device is described that includes a membrane and a shutter and driver device is configured to receive an audio signal, modulate it and generate electric signals to operate the speaker and generate an acoustic audio signal.
An audio system includes at least one acoustic transducer having at least one a group of: a membrane and an acoustic modulator; or a membrane, acoustic resonator, and acoustic coupler; at least one microphone receiving an acoustic signal; a substrate; and a package. The at least one acoustic transducer and one microphone are attached to the substrate and encapsulated by the package.
Techniques described herein generally relate to generating an audio signal with a speaker. In some examples, a speaker device includes an acoustic medium; and at least one ultrasound source coupled to the acoustic medium through at least one time-varying acoustic coupler. The acoustic coupler is configured to be electrically activated to operate at its mechanical resonance so as to generate an audio signal.
H04R 1/28 - Transducer mountings or enclosures designed for specific frequency response; Transducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
A speaker array includes a first speaker device having a first membrane and a first acoustic channel, the first membrane being configured to oscillate and generate a first ultrasonic acoustic signal configured to be transmitted at least partially in the first acoustic channel, the first acoustic channel including at least one dimension comparable to a dimension of a viscous boundary layer of air. A second speaker device includes a second membrane and a second acoustic channel, the second membrane being configured to oscillate and generate a second ultrasonic acoustic signal configured to be transmitted at least partially in the second acoustic channel, the second acoustic channel including at least one dimension comparable to the dimension of the viscous boundary layer of air. An audio output of the speaker array is the combined output of at least the first speaker device and the second speaker device.
An audio system includes a modulated ultrasound audio driver having at least one ultrasound emitter configured to emit an ultrasound signal; at least one acoustic mixer configured to generate an audio signal from the ultrasound signal; and at least one ultrasound receiver configured to detect an ultrasound signal and generate a corresponding electrical signal. A processing unit is configured to process the electrical signal and estimate one or more physical or biometric parameters from the electrical signal. A method for physical or biometric parameter estimation is also disclosed.
Techniques described herein generally relate to generating an audio signal with a speaker. In some examples, a speaker device is described that includes a membrane, an acoustic cavity and an acoustic channel. The membrane can be configured to oscillate along a first directional path and to generate an acoustic signal. The acoustic signal traverses the acoustic channel and generates an audio signal.
An audio system includes at least one sound generation device having at least an acoustic transducer; and an electronic integrated circuit. A communication bus is connected to the at least one sound generation device and is configured to communicate a digital signal comprised of one or more audio streams and control signals. A power bus is connected to the at least one sound generation device. The acoustic transducer includes at least one of the following groups: a membrane and an acoustic modulator; or a membrane, acoustic resonator, and acoustic coupler. The electronic integrated circuit is constructed and arranged to receive the digital signal and generate an analog electric signal to operate the acoustic transducer to generate an audio signal in accordance with the control signal.
Techniques described herein generally relate to generating an audio signal with a speaker. In some examples, a speaker device is described that includes a membrane and a shutter. The membrane can be configured to oscillate along a first directional path and at least one frequency effective to generate an ultrasonic acoustic signal. The shutter is positioned along the propagation of ultrasonic acoustic signal and configured to modulate the ultrasonic acoustic signal such that an audio signal is generated.
H04R 1/28 - Transducer mountings or enclosures designed for specific frequency response; Transducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
Techniques described herein generally relate to generating an audio signal with a speaker. In some examples, a speaker device is described that includes a membrane and a shutter. The membrane can be configured to oscillate along a first directional path and at least one frequency effective to generate an ultrasonic acoustic signal. The shutter is positioned along the propagation of ultrasonic acoustic signal and configured to modulate the ultrasonic acoustic signal such that an audio signal is generated.
Techniques described herein generally relate to generating an audio signal with a speaker. In some examples, a speaker device is described that includes a membrane and a shutter. The membrane can be configured to oscillate along a first directional path and at a first frequency effective to generate an ultrasonic acoustic signal. The shutter can be positioned about the membrane and configured to modulate the ultrasonic acoustic signal such that an audio signal can be generated.
H04R 1/00 - LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS - Details of transducers
Techniques described herein generally include methods and systems related to a speaker device comprises a planar oscillation element configured to generate an ultrasonic acoustic signal, a shutter element, a first comb drive, and a second comb drive. The shutter element is configured to cover an opening that is positioned to receive the ultrasonic acoustic signal to modulate the ultrasonic acoustic signal such that an audio signal is generated. The first comb drive is coupled to the shutter element and configured to displace the shutter element in a first direction and the second comb drive is coupled to the shutter element and configured to displace the shutter element in a second direction.
Techniques described herein generally include methods and systems related to a MEMS-based audio speaker system configured for generating an audio signal. The speaker system includes one or more apertures in the speaker system positioned to receive the ultrasonic carrier signal and one or more movable and over-sized obstruction elements that are configured to modulate the ultrasonic carrier signal and thereby generate an audio signal. Because the movable obstruction elements are configured to overlap one or more edges of the apertures when in the closed position, modulation depth of the generated audio signal can be substantially improved or otherwise varied.
Techniques described herein generally include methods and systems related to a MEMS-based audio speaker system that includes a first movable element, formed from a first layer of a semiconductor substrate, and a second movable element, formed from a second layer of the semiconductor substrate that is a different layer than the first layer of the semiconductor substrate. The first movable element may be configured to oscillate along a first directional path substantially orthogonal to the first plane.
Techniques described herein generally include methods and systems related to a MEMS-based audio speaker system configured with multiple speaker devices to generate an audio signal that is substantially without a high-band ultrasonic signal. Energy may be transferred to a low frequency sideband of the audio signal output and substantially eliminated from the high frequency sideband of the audio signal by passing an acoustic carrier signal through two different modulators. One modulator may implement a first modulation function on the acoustic carrier signal to generate a first audio signal, where the first modulation function may be based on a target acoustic output signal for the MEMS-based audio speaker system. The second modulator may implement a second modulation function on the acoustic carrier signal to generate a second audio signal, where the second audio signal may be the Hilbert transform of the first audio signal.
H04R 1/24 - Structural combinations of separate transducers or of parts of the same transducer and responsive respectively to two or more frequency ranges
H04R 1/34 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
H04R 1/40 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
Techniques described herein generally relate to generating an audio signal with a speaker. In some examples, a speaker device is described that includes a membrane and a shutter. The membrane can be configured to oscillate along a first directional path and at a first frequency effective to generate an ultrasonic acoustic signal. The shutter can be positioned about the membrane and configured to modulate the ultrasonic acoustic signal such that an audio signal can be generated.
H04R 1/00 - LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS - Details of transducers
Techniques described herein generally relate to generating an audio signal with a speaker. In some examples, a speaker device is described that includes a membrane and a shutter. The membrane can be configured to oscillate along a first directional path and at a first frequency effective to generate an ultrasonic acoustic signal. The shutter can be positioned about the membrane and configured to modulate the ultrasonic acoustic signal such that an audio signal can be generated.
H04R 1/00 - LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS - Details of transducers
patents
