USB Mic arecord: set_params:1081: Sample format non available

[Dan Todd]

Got a Raspberry pi 2 running the latest raspbian image. Trying to get my own jasper project rolling but have been fighting with the USB mic.

When I run "arecord temp.wav" I get the following error:

pi@raspberrypi ~ $ arecord temp.wav

Recording WAVE 'temp.wav' : Unsigned 8 bit, Rate 8000 Hz, Mono

arecord: set_params:1081: Sample format non available

Available formats:

- S16_LE

Using a kinobo mini akiro usb mic

any help with this error would be greatly appreciated.

[Nikki Yakubovsky]

try running arecord -f cd temp.wav 

-f cd means 16 bit 44.1 KHz 

[Dan Todd]

thanks for the reply, Appreciate the help. I ran the command as you showed but now have :

Recording WAVE 'temp.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo

arecord: set_params:1087: Channels count non available

This mic thing is killing me!!!!

[John Ginsberg]

Try this (found it on a forum, haven't tested it):

arecord -f S16_LE -c 2 -r 192000 -d 20 test.wav

[Nikki Yakubovsky]

in your home directory open this file using any text editor .asoundrc. i.e. do for example $ sudo nano ~/.asoundrc try playing with the data there (if there is something there already). I think what helped me was to comment out everything that there was and insert this 

defaults.ctl.card 0
defaults.pcm.card 0
defaults.pcm.device 0

the number you have to find out by yourself. 

If there is nothing in there, just try pasting this in. Hope this helps. 

[Steve Gale]

I have had similar problems.
I had downloaded the image for a B from the jasper installation page, then ran sudo update, upgrade etc and had problems with the microphone and jasper itself not working.
arecord temp.wav would not work, but sudo arecord temp.wav did.
I also had to edit mic.py to change the sample rate.

I gave up and started again with a clean image.

This time everything works, have not had to edit mic.py.

I am not sure what is causing the problem with the latest update and do not intend to!

Steve