Static when recording

[tuc]

Hi,

Been looking around, trying things, not getting anywhere.

Using the card with the on-board mic, my alsamixer looks :

Screen Shot 2017-06-25 at 1.25.05 PM.png (116.4 KiB) Viewed 1957 times

dmesg shows:

Code: Select all

[    3.459704] audioinjector-stereo soc:sound: ASoC: CPU DAI (null) not registered - will retry
[    3.459726] audioinjector-stereo soc:sound: snd_soc_register_card failed (-517)
[    3.460565] audioinjector-stereo soc:sound: ASoC: CODEC DAI wm8731-hifi not registered - will retry
[    3.460583] audioinjector-stereo soc:sound: snd_soc_register_card failed (-517)
[    3.476428] audioinjector-stereo soc:sound: wm8731-hifi <-> 3f203000.i2s mapping ok

and later on

Code: Select all

[52144.432176] bcm2835-i2s 3f203000.i2s: I2S SYNC error!
[52189.207927] bcm2835-i2s 3f203000.i2s: I2S SYNC error!
[52205.092446] bcm2835-i2s 3f203000.i2s: I2S SYNC error!
[52610.843049] bcm2835-i2s 3f203000.i2s: I2S SYNC error!

and used the command :

Code: Select all

 arecord -f cd -t raw| lame -x -r - out.mp3

But ended up with the MP3 at https://ufile.io/pbgai
Thoughts?

Thanks, Tuc

[flatmax]

Hi there,
The card looks setup correctly. Is it possible the static is due to the capture volume/boots being up too high ? Can you shown the clipping before compression ?
thanks
Matt