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Nordic Case Info
  • Case ID: 329522
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nrf5340 can support 8k/16k sample rate, 16 bits level, mono for I2S interface?

dasas

We want use NRF5340 to do le audio application. We got the demo from your website, and find the audio demo, but the min sample rate is 32khz can be set, we want to use 8K and 16K sample rate, is it support? if support, how to configure?

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    Hi Benji,

    We support 16 KHz/24KHz/48Khz as the sampling frequency for the audio application.. 8KHz is currently not supported.. If both headset and gateway is using Nordic solution, once CONFIG_STREAM_BIDIRECTIONAL=y is added in the prj.conf for enabling the bidirectional mode, then it switch from 48KHz sampling rate to 24KHz sampling rate. Using CONFIG_BT_AUDIO_PREF_SAMPLE_RATE_16KHZ=y would set the sampling frequency to 16KHz.

    Regards,

    Swathy

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    Hi Benji,

    We support 16 KHz/24KHz/48Khz as the sampling frequency for the audio application.. 8KHz is currently not supported.. If both headset and gateway is using Nordic solution, once CONFIG_STREAM_BIDIRECTIONAL=y is added in the prj.conf for enabling the bidirectional mode, then it switch from 48KHz sampling rate to 24KHz sampling rate. Using CONFIG_BT_AUDIO_PREF_SAMPLE_RATE_16KHZ=y would set the sampling frequency to 16KHz.

    Regards,

    Swathy

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