Abrégé

There is disclosed a method for audio clock adjustment in network-based public address (PA). The disclosed method includes: generating an audio clock signal based on an occupancy level of an audio buffer in which digital audio data received through a network is buffered; and providing the digital audio data from the audio buffer in accordance with the generated audio clock signal, wherein generating the audio clock signal includes: when the occupancy level indicates that a first amount of the digital audio data remains in the audio buffer, generating, as the audio clock signal, a first audio clock signal from an oscillation clock signal; and when the occupancy level indicates that a second amount, different from the first amount, of the digital audio data remains in the audio buffer, setting, based on the occupancy level, a clock divisor and generating, as the audio clock signal, a second audio clock signal from a finite state machine (FSM) clock signal.

Classes IPC  ?

• H04H 20/47 - Dispositions caractérisées par des circuits ou composants spécialement adaptés à la radiodiffusion spécialement adaptés aux systèmes de radiodiffusion couverts par les groupes spécialement adaptés aux systèmes de radiodiffusion stéréophonique
• G06F 9/448 - Paradigmes d’exécution, p. ex. implémentation de paradigmes de programmation

Abrégé

There is disclosed a network-based public address (PA) receiver. The disclosed network-based PA receiver includes: a system-on-chip (SoC) including a processing system (PS) and programmable logic (PL); wherein the PS includes a processor that executes a software program that outputs audio data encoded in a particular audio data representation format based on first PA audio data received via a network; wherein the PL is programmed to provide first audio interface logic and second audio interface logic; wherein the first audio interface logic organizes the encoded audio data into first formatted audio data according to a first audio interface format; and wherein the second audio interface logic organizes an audio data payload of a particular transport protocol, extracted from second PA audio data received via the network, into second formatted audio data according to a second audio interface format.

Classes IPC  ?

• H04R 27/00 - Systèmes d'annonce en public
• H04H 20/61 - Dispositions spécialement adaptées à des applications spécifiques, p. ex. aux informations sur le trafic ou aux récepteurs mobiles à la radiodiffusion locale, p. ex. la radiodiffusion en interne

Abrégé

Disclosed is a digital audio signal switcher comprising: an input multiplexer for receiving a first digital audio signal and a second digital audio signal; an output multiplexer for outputting an output digital audio signal; and a finite state machine (FSM)-based fade circuit unit, for, in response to an audio selection signal indicating switching between the first digital audio signal and the second digital audio signal, generating a faded-out digital audio signal and causing the output multiplexer to output the faded-out digital audio signal as the output digital audio signal, and subsequently, after clock switching, generating a faded-in digital audio signal and causing the output multiplexer to output the faded-in digital audio signal as the output digital audio signal.

Classes IPC  ?

• H04H 20/61 - Dispositions spécialement adaptées à des applications spécifiques, p. ex. aux informations sur le trafic ou aux récepteurs mobiles à la radiodiffusion locale, p. ex. la radiodiffusion en interne
• H04H 20/44 - Dispositions caractérisées par des circuits ou composants spécialement adaptés à la radiodiffusion
• H04R 27/00 - Systèmes d'annonce en public

Abrégé

A method for audio clock adjustment in a network-based public address (PA) is disclosed. The disclosed method comprises the steps of: generating an audio clock signal on the basis of the occupancy level of an audio buffer in which digital audio data received through a network is buffered; and providing the digital audio data from the audio buffer according to the generated audio clock signal, wherein the step of generating the audio clock signal includes the steps of: generating a first audio clock signal as an audio clock signal from an oscillating clock signal if the occupancy level indicates that a first amount of digital audio data remains in the audio buffer; and setting a clock divisor on the basis of the occupancy level if the occupancy level indicates that a second amount differing from the first amount of the digital audio data remains in the audio buffer, and generating a second audio clock signal as the audio clock signal from a finite state machine (FSM) clock signal.

Classes IPC  ?

• H04H 20/61 - Dispositions spécialement adaptées à des applications spécifiques, p. ex. aux informations sur le trafic ou aux récepteurs mobiles à la radiodiffusion locale, p. ex. la radiodiffusion en interne
• H04H 40/36 - Dispositions caractérisées par des circuits ou composants spécialement adaptés à la réception spécialement adaptés aux systèmes de radiodiffusion couverts par les groupes spécialement adaptés à la réception de la radiodiffusion stéréophonique
• H03L 7/081 - Détails de la boucle verrouillée en phase avec un déphaseur commandé additionnel

Abrégé

Disclosed is a network-based public address (PA) receiver. The disclosed network-based PA receiver comprises a system-on-chip (SoC) including a processing system (PS) and a programmable logic (PL), wherein: the PS includes a processor for executing a software program for outputting audio data encoded in a specific audio data representation format on the basis of first PA audio data received over a network; and the PL is programmed to provide a first audio interface logic and a second audio interface logic, wherein the first audio interface logic organizes encoded audio data into first formatted audio data according to a first audio interface format, and the second audio interface logic organizes an audio data payload, extracted from second PA audio data received over the network, of a specific transport protocol into second formatted audio data according to a second audio interface format.

Classes IPC  ?

• H04H 20/61 - Dispositions spécialement adaptées à des applications spécifiques, p. ex. aux informations sur le trafic ou aux récepteurs mobiles à la radiodiffusion locale, p. ex. la radiodiffusion en interne
• H04H 40/18 - Dispositions caractérisées par des circuits ou composants spécialement adaptés à la réception
• H04H 60/82 - Dispositions caractérisées par des systèmes de transmission autres que ceux utilisés pour la radiodiffusion, p. ex. Internet caractérisées par le système de transmission lui-même le système de transmission étant Internet
• G06F 15/78 - Architectures de calculateurs universels à programmes enregistrés comprenant une seule unité centrale

Abrégé

Disclosed is an audio clock adjustment device for switching an output audio clock signal between a first audio clock signal and a second audio clock signal, wherein each of the first and second audio clock signals has a different clock rate, and the audio clock adjustment device comprises: an edge detector, which processes, as a second audio clock signal, a signal having a waveform determined according to the first audio clock signal, uses the processed signal so as to generate an indicator signal indicating a triggering edge of the second audio clock signal, and generates, on the basis of the indicator signal, a detection signal exhibiting, in response to a triggering edge, a level transition indicating that the second audio clock signal is aligned with the first audio clock signal; and a control timing adjuster for setting switching timing in response to the level transition.

Classes IPC  ?

• H04H 20/61 - Dispositions spécialement adaptées à des applications spécifiques, p. ex. aux informations sur le trafic ou aux récepteurs mobiles à la radiodiffusion locale, p. ex. la radiodiffusion en interne
• H04H 20/88 - Systèmes de radiodiffusion stéréophonique
• G11B 20/10 - Enregistrement ou reproduction numériques

Abrégé

Disclosed is a method for audio clock adjustment in a network-based public address (PA). The disclosed method comprises the steps of: buffering digital audio data in an audio buffer for later fetching; on the basis of an occupancy level indicating an amount of digital audio data currently remaining within the audio buffer, setting a clock divisor to one of a plurality of integers that are greater than 1 and have been determined for a given sample rate of the digital audio data, and generating, from a finite state machine (FSM) clock signal having an FSM clock frequency, an audio clock signal having the same clock rate as dividing the FSM clock frequency by the clock divisor; and fetching the digital audio data from the audio buffer, and providing the digital audio data according to the audio clock signal.

Classes IPC  ?

• H04H 20/61 - Dispositions spécialement adaptées à des applications spécifiques, p. ex. aux informations sur le trafic ou aux récepteurs mobiles à la radiodiffusion locale, p. ex. la radiodiffusion en interne
• H04H 40/36 - Dispositions caractérisées par des circuits ou composants spécialement adaptés à la réception spécialement adaptés aux systèmes de radiodiffusion couverts par les groupes spécialement adaptés à la réception de la radiodiffusion stéréophonique
• H03L 7/081 - Détails de la boucle verrouillée en phase avec un déphaseur commandé additionnel

Produits et services

[ POWER TRANSFORMERS, CIRCUIT BREAKERS, ELECTRICAL CONNECTORS AND ELECTRIC POWER CABLES FOR USE WITH AUDIO EQUIPMENT AND PUBLIC ADDRESS SYSTEMS, POWER SUPPLY RECTIFIERS, CAPACITY MEASURES, namely, POWER MONITORS, COVERED ELECTRICAL WIRES, ELECTRIC COMMUNICATION CABLES, INTERPHONES, namely, TWO-WAY VIDEO PHONE SYSTEM, COMPRISING PHONE, INTERCOM, CAMERA, AND ADAPTER; PHONE SWITCHING APPARATUS, namely, PAGING SWITCH; VOICE FREQUENCY TRANSMISSION APPARATUS COMPRISING WIRELESS RECEIVER, HEADSET MICROPHONE, AND HAND-HELD MICROPHONE RECEIVERS, namely, AUDIO RECEIVERS/CASSETTE TAPE RECORDER/PLAYERS; ELECTRIC TIME SWITCHES FOR USE WITH AUDIO EQUIPMENT AND PUBLIC ADDRESS SYSTEMS; ELECTRIC DEVICE FOR GENERATING CHIMES OR SIRENS GENERATORS USED FOR PUBLIC ADDRESS SYSTEMS, RECORD PLAYERS, TAPE RECORDERS, LOUD SPEAKERS, VIDEO TAPE RECORDERS, COMPACT DISC PLAYERS, ] SOUND REPRODUCTION APPARATUS, namely, AUTOMATIC AUDIO BROADCAST SYSTEMS; [ COMPRISING BATTERY SWITCH, FUSE HOLDERS, AC PLUG, INPUT TERMINALS, AND INPUT AND OUTPUT JACKS; SOUND MIXERS; AUDIO MIXERS; ANTENNAE; MICROPHONES, ] AMPLIFIERS [, AUDIO HEADPHONES, ADAPTERS, AUDIO OUTPUT CONTROL BOX; CHARGER FOR BATTERIES USED FOR INDUSTRIAL USE, EQUALIZERS, LIMITERS; PROGRAM/SIGNAL CHANNEL DISTRIBUTORS ] DISPLAY/STORAGE EQUIPMENT THEREFOR, namely, RACK CABINETS WITH AND WITHOUT TABLES [, AND MICROPHONE AND SPEAKER STANDS ]

Produits et services

(1) Transformers, circuit breakers, connectors and power cables for use with audio equipment and public address systems; rectifiers, capacity measures, covered wires, communication cables, interphones, namely video-phone intercoms, telegraph switching apparatus, namely telephone pagers, voice frequency transmission apparatus, namely wireless voice transmission, receivers, time switches, namely programmable interval timers for use with audio equipment and public address systems, sign generators, record players, tape recorders, loud speakers, video tape recorders, compact disc players, sound reproduction apparatus, namely voice message recorders, sound and audio mixers, antennas, microphones, amplifiers, head phones, adapters, closed circuits, monitors, furniture, namely cabinets, racks, stands; battery chargers for industrial use, equalizers, limiters, distributors.