Microphone ALSA noise

Question

I've got two microphones. Both work well in Windows. However, in Ubuntu the first one (call it X) works fine, but the second one (call it Y) produces a lot of high-frequency noise. I know, the best thing to do is to buy a new microphone, but X is really old and the headset is broken, Y is almost new and works fine with Windows. Is there any way to apply a low-pass filter in ALSA? I've also noticed that the sound is a little bit softened...like telephone quality input.

My soundcard is: 00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 02) i've got a toshiba notebook and I've just tried to edit the alsa config file adding this line: options snd-hda-intel model=auto

~ UPDATE ~ If I use arecord test.wav -f CD everything works fine.

Solution 1

I have just solved the problem: it is just a new kernel bug. You can solve it by using:

options snd-hda-intel model=<your_model_or-audo> position_fix=2

In /etc/modprobe.d/alsa-base.conf

Solution 2

I just had to open

alsamixer

and go to capture screen [F4] and set mic boost down, and mic record up.

Comments

[sashoalm]

I tried it as well, capture at 100 and both boosts at 0, but for me there was still white noise.

[Brannon]

capture should be at 70.

[Artyom Chernetsov]

worked for me on acer aspire 3. cat /proc/asound/card0/codec* | grep Codec Codec: Realtek ALC255