Hi, I have a question about Audio CODEC sampling rate.

Yunsik Chung

Hi,

What i learned from sampling theory, if the sampling rate is bigger than the twice of the maximum signal frequency, the signal can be perfectly reconverted.

Audio frequency is 20 to 20kHz. Then, why do we use Audio CODEC which has sampling rate of 96kHz, 192kHz or even faster?

Faster sampling rate gives us more clear sound?

or it has something to do with bits?

Thanks,

Yun

over 6 years ago

0 Collin Wells over 6 years ago

TI__Guru 64765 points

Hello,

Good question. The faster sampling rates allow for lower latency signal processing which is helpful for acoustic echo cancellation, active noise cancellation, and other similar audio processing control loops.

Many of our Audio ADCs and CODECs will still have an analog bandwidth that's limited not too far outside the Audio bandwidth even when the higher sampling rates are active.

0 Yunsik Chung over 6 years ago in reply to Collin Wells

TI__Intellectual 1150 points

Hi Collin,

Thank you for your reply!

I understood it!

Thanks,

Best regards,

Yun

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Hi, I have a question about Audio CODEC sampling rate.