Digital Audio Transfer
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Bluetooth A2DP and USB Audio Class (UAC) are the most representative digital audio transmission schemes.
Source Device: The device that sends the audio (Transmitter), such as a smartphone or PC.
Sink Device: The device that receives the audio (Receiver), such as a Bluetooth DAC or USB DAC.
When the receiver device connects to the source device, it sends the source device information about the supported audio formats, sample rates, bit resolutions, and codecs.
The source device selects one of the audio formats the receiver device supports for audio transmission.
Information about supported audio formats is transmitted:
5K (Receiver) --> Android Smartphone
Supported codecs: SBC, AAC, aptX, aptX-Adaptive, LDAC
Supported sample rates: 44.1, 48, 88.2, 96 kHz
The smartphone selects one of the codecs and sample rates for transmission.
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