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Forum Post: AIC32x4: Different beep sound quality between 44.1kHz and 11.025kHz in case of using PRB_P25

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Hi community member,

Would you please provide the advices for me in order to improve the following phenomenon?

[Phenomenon]

When changed the sampling frequency from 44.1kHz to 11.025kHz, the sound quality was different .

I heard the beep sound higher than the sound which I expected.

I used the following register values.

------------------------------------------------ 

 Beep: 2kHz  FS: 44.1kHz

    Page0 Reg 76 : 0x23

    Page0 Reg 77 : 0xFB

    Page0 Reg 78 : 0x7A

    Page0 Reg 79 : 0xD6

------------------------------------

 Beep: 2kHz   FS: 11.025kH

    Page0 Reg 76 : 0x74

    Page0 Reg 77 : 0x4B

    Page0 Reg 78 : 0x35

    Page0 Reg 79 : 0x79

------------------------------------------------ 

In order to calculate those above values, I referred to the document of "slaa446"  on page 9.

If you have any question, please let me know.

Best regards.

Kaka


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