It's me again.

I just found out that the audio playback is affected by this problem too. Maybe this can serve as a hint.

Regards, Christian

-----Ursprüngliche Nachricht----- Von: alsa-devel-bounces@alsa-project.org [mailto:alsa-devel-bounces@alsa-project.org] Im Auftrag von Fischer, Christian Gesendet: Mittwoch, 10. Januar 2018 11:31 An: alsa-devel@alsa-project.org Cc: 'Takashi Iwai' tiwai@suse.com; 'Mark Brown' broonie@kernel.org; 'Liam Girdwood' lgirdwood@gmail.com Betreff: [alsa-devel] ASoC: sgtl5000: recording issue at 8 kHz with fsl-imx28

Hello guys,

trying to record from a SGTL5000 with 8 kHz sampling rate gives a very bad audio quality. All other sampling rates working fine.

Initially posted at NXP forum: https://community.nxp.com/message/975131

Tested with imx28, sgtl5000 and Kernel 4.14.12.

I've attached a recording with 8 kHz, capture-vol was 67, mic-gain 33, AVC-off and Capture-ZC off. Recorded with "arecord -D "hw:0,1" -t wav -f S16_LE -c 2 -r 8000 test.wav". Sounds like there are missing samples..

The microphone is powered from mic-bias and decoupled with a 100nF capacitor.

Can anybody help me? Thank you guys! Kind regards,

Christian Fischer