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espressif / esp-adf

Espressif Audio Development Framework
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a2dp_source_stream -static when I change to 24 bit audio (AUD-3258) #676

Closed ridedirt closed 1 year ago

ridedirt commented 3 years ago

When I change from 16 to 24 bits per sample, I receive static from Bluetooth speaker and can very slightly hear music in the background of static.

File: i2s.stream.h line: #define I2S_STREAM_CFG_DEFAULT() code: .bits_per_sample = I2S_BITS_PER_SAMPLE_16BIT,
to .bits_per_sample = I2S_BITS_PER_SAMPLE_24BIT,

APBeck3rd commented 3 years ago

The ESP-32 uses the SBC codec for streaming Bluetooth audio. I believe that SBC does not support 24 bit audio. Perhaps someone else knows whether or not this is true.

CodecComparison

jason-mao commented 1 year ago

I think the SBC is 16bit only, but the I2S support 24bti per sample. I'm going to close inactive issue. Please reopen this if you have any questions or need any further assistance.