gilligan8
Posts: 13
Joined: Sun Feb 15, 2015 5:48 pm

C-Media USB Mic volume issue

Wed Jul 29, 2015 12:19 am

I've got a C-Media C119 usb card that I'm trying to use to record audio with.

I can record the wav but it's EXTREMELY low volume.

I've run alsamixer and tried to tweak the volume but it doesn't really seem to be working.

Anyone got any ideas?

metalj
Posts: 212
Joined: Sat Feb 07, 2015 11:56 pm

Re: C-Media USB Mic volume issue

Wed Jul 29, 2015 6:06 am

I record audio with audacity on my pi and the volume isn't perfect so I go into settings and select normalize. If you're not into audacity try amplifying the input with something like a guitar amp. Mic into input - crank volume - output from headphone to pi. Really you can use any amp type device. But audacity is a great visual for what's coming out of your audio card.
Backspace 28 times :)

gilligan8
Posts: 13
Joined: Sun Feb 15, 2015 5:48 pm

Re: C-Media USB Mic volume issue

Wed Jul 29, 2015 3:54 pm

I'm very familiar with audio (normalizing and all that jazz)... I was a sound engineer in a previous life.

Problem is that the source is almost non-existent. If I'd normalize it would just make it extremely noisy.

Amplifying it before would be best, but it's not practical for my purpose. This soundcard has a "boost" function but I can't seem to access it via alsamixer or amixer.

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