imx6 i2s audio playback issue

satishkumarchal — Fri, 11 Jul 2014 05:23:10 GMT

Hi All,

I have a customized board which has imx6 in it with android jellybean 4.2.2 version.

when i play a stream which has sine 10 tones in it (sampled at 44 KHz) through i2s and when i captured the same thing through mic ( or line in cable) with windows sound recorder.

In stream,time interval between each tone is 1sec. when i observe the recorded stream it has 10 tones in it But time interval between each tone is 0.984 sec.

If I take the dump before rendering, am getting same as the original stream ( time interval is 1sec ).

Is this i2s codec problem which is rendering more than what we have given ?

What could be the cause for the issue, Can any one help me ?

Thanks in advance.

Note :- Rendering Sampling frequency is 48 KHz.

Regards,

csk

Message was edited by: satish kumar challa

Re: imx6 i2s audio playback issue

weidong_sun — Tue, 22 Jul 2014 08:31:41 GMT

Hi satish,

0.984 sec is very close to 1 sec, It should not affect audio playback, I feel the phenomena should be generated by clock precision.

Regards,

Weidong

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imx6 i2s audio playback issue

Re: imx6 i2s audio playback issue