i.MX6ULEVK can play audio but not record

[ida_jiang]

Hi ,

    I'm testing i.MX6ULEVK wm8960 by aplay and arecord.  The images I used are the official demo of L4.14.98_2.0.0_ga and I have set the configurations for the board's mic. I could play the /unit_test/ASRC/audio.wav file.  But when I tried to record by "arecord -Dhw:0,0 -d 10 -c 1 -f S16_LE -r 48000 test.wav", the test.wav have captured nothing. How to deal with it?

    Hope your help. Thanks ！

[igorpadykov]

Hi Ida

one can try to follow sect.7.3.5 Audio recording attached Linux Guide.

Best regards
igor
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[ida_jiang]

Hi igorpadykov，

I used the command “$GSTL alsasrc num-buffers=430 blocksize=4096 ! avenc_mp2 ! filesink location=output.mp3” according of that reference. And it showed:

If I ignored the configuration of avenc_mp2, it would show:

But the output.mp3 was filled with current voice. How to deal with it ?

Best Regards !

Ida

发件人: igorpadykov <admin@community.nxp.com>

发送时间: 2020年4月2日 7:48

收件人: Ida Jiang 江一 <ida.jiang@wpi-group.com>

主题: Re: - Re: i.MX6ULEVK can play audio but not record

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Re: i.MX6ULEVK can play audio but not record

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[igorpadykov]

Hi Ida

one can recheck mic settings as described in sect.28.5.1 Stereo Codec Unit Test

attached Linux Manual.

Best regards
igor

[ida_jiang]

Hi igorpadykov,

I have solved the problem according to Linux Manual.

Thanks !

Best Regards !

Ida

发件人: igorpadykov <admin@community.nxp.com>

发送时间: 2020年4月2日 12:09

收件人: Ida Jiang 江一 <ida.jiang@wpi-group.com>

主题: Re: - Re: i.MX6ULEVK can play audio but not record

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Re: i.MX6ULEVK can play audio but not record

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[ida_jiang]

Hi igorpadykov<https://apc01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcommunity.nxp.com%2Fpeople%2Figorpadykov%3Fet%3Dwatches.email.thread&data=02%7C01%7Cida.jiang%40wpi-group.com%7Cd941364a7b804beab4f708d7d6bb9c05%7Cde047c79d4d94af391debc44b0581490%7C0%7C0%7C637213973583173577&sdata=IJKZ68CzMpRd7nYK7li6MQQBI3zndCZ%2BLSNdAwyWviQ%3D&reserved=0>，

I set the stereo as follows:

When I tested by using “arecord -Dplughw:0,0 -r 44100 -f S16_LE -c 2 -d 5 record.wav”, there was no voice.

When I used “$GSTL alsasrc num-buffers=430 blocksize=4096 ! filesink location=output.mp3”, there was current voice.

Was I setting it up wrong ?

Best Regards !

Ida

发件人: igorpadykov <admin@community.nxp.com>

发送时间: 2020年4月2日 12:09

收件人: Ida Jiang 江一 <ida.jiang@wpi-group.com>

主题: Re: - Re: i.MX6ULEVK can play audio but not record

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Re: i.MX6ULEVK can play audio but not record

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