Audio communications system
AssigneeCirrus Logic International Semiconductor Ltd.
InventorsErich P. ZWYSSIG, Benjamin YOUNG, Pradeep SAMINATHAN
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Abstract
An audio communication system comprising: a first audio device; and a second audio device coupled to the first audio device by a digital audio interface, wherein: the first audio device is configured to synchronise a frame start symbol of a first audio device output signal for transmission by the first audio device to the second audio device with a first frame synchronisation signal local to the first audio device; and the second audio device is configured to detect the frame start symbol of the first audio device output signal and synchronise a second frame synchronisation signal local to the second audio device to the first frame synchronisation signal based on detection of the frame start symbol.
Claims24
An audio communication system comprising:
- a first audio device;
- and
- a second audio device coupled to the first audio device by a digital audio interface, wherein:
- the first audio device is configured to synchronise a frame start symbol of a first audio device output signal for transmission by the first audio device to the second audio device with a first frame synchronisation signal local to the first audio device;
- and
- the second audio device is configured to detect the frame start symbol of the first audio device output signal and synchronise a second frame synchronisation signal local to the second audio device to the first frame synchronisation signal based on detection of the frame start symbol.
An audio device for an audio communication system, wherein the audio device is configured to output an output signal containing audio data to a further audio device coupled to a digital interface of the audio device, wherein the audio device is configured to synchronise a frame start symbol of the output signal with a local frame synchronisation signal of the audio device.
An audio communication system comprising a plurality of audio devices coupled in a daisy-chain network, wherein the plurality of audio devices comprises a primary audio device and a set of secondary audio devices, wherein each secondary audio device is configured to:
- receive a data frame from an upstream audio device of the plurality of audio devices;
- and
- determine its own position in the daisy-chain network based on:
- data in the received data frame;
- or
- a number of channels of audio data contained in the received data frame.
An audio device for an audio communication system comprising a network of audio devices, wherein the audio device is configured to:
- receive a data frame from an upstream audio device of the network of audio devices;
- and
- determine its own position in the network of audio devices based on:
- data in the received data frame;
- or
- a number of channels of audio data contained in the received data frame.
An audio communication system comprising a plurality of audio devices coupled in a daisy chain network, wherein the plurality of audio devices comprises a primary audio device and a set of secondary audio devices, wherein each secondary audio device is configured to:
- receive a data frame from an upstream audio device of the plurality of audio devices, wherein the received data frame contains a first audio sample acquired by the upstream audio device in a first sample period;
- acquire a second audio sample from the secondary audio device in the first sample period;
- delay the acquired audio second audio sample;
- and
- combine the received first audio sample with the delayed second audio sample to generate an output data frame containing the received first audio sample and the acquired second audio sample.
An audio device for an audio communication system comprising a network of audio devices, wherein the audio device is configured to:
- receive a data frame from an upstream audio device of the network of audio devices wherein the received data frame contains a first audio sample acquired by the upstream audio device in a first sample period;
- acquire a second audio sample from the audio device in the first sample period;
- delay the acquired audio second audio sample;
- and
- combine the received first audio sample with the delayed second audio sample to generate an output data frame containing the received first audio sample and the acquired second audio sample.
Dependencies are inferred from the claim text.