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CC2564C: 24kHz audio convertion

Dan E
Prodigy 60 points
Part Number: CC2564C
Other Parts Discussed in Thread: CC2564

Hi,

In the processor site I found below information. I am trying to use the module for WBS but the audio sampling frequency I have available is at 24kHz. Is there any way this can be done? Is convering to 16kHz or 48kHz possible using SARC? Note that my audio is not A2DP but bidirectional audio.

/BR

Dan

  • 0
    TI__Mastermind 28285 points

    Dan,

    The SARC is used to convert the A2DP compressed audio to various sampling frequencies to allow playback of A2DP audio. A2DP is capable of bi-directional audio streaming, is there another protocol you are using to send audio?

    BR,

    Vince 

  • 0 in reply to Vincent Rodriguez
    Prodigy 60 points

    Hi Vince and thanks for your reply. I am trying to set up a voice call between my device which has a codec (master) and cc2564c (slave), and a cell-phone on the other side. But as mentioned my codec is running at 24kHz feeding the cc2564 via pcm bus. My understandin is that the phone can only accept 16, 44.1 or 48kHz, right? So I need to convert the 24kHz to one of the above I guess. Could this be done by using SARC converter? Is there any other way?

    Greatfull for any suggestions and hints.

  • 0 in reply to Dan E
    TI__Mastermind 28285 points

    Hi Dan,

    Yes you are correct, you will need to convert one of the other audio sampling rates to be compatible with either assisted hpf or assisted A2DP. The SARC can't convert the 24 KHz to the correct format.

    Best Regards,

    Vince 

  • 0 in reply to Vincent Rodriguez
    Prodigy 60 points

    Hi Vincent,

    What is then the scenario in which SARC frequency conversion could be used?

    /Dan

  • 0 in reply to Dan E
    TI__Mastermind 28285 points

    Dan,

    From my understanding, the SARC only works when using A3DP. If you use A3DP, and you set the PCM input sample parameter to 24K, and the bluetooth device recieves something different, it will use the SARC to convert this signal to the 24KHz you are looking for.

    BR,

    Vince