Re: [Alsa-user] DC Offset on microphone input

2011-01-09 Thread IL'dar AKHmetgaleev
На Mon, 10 Jan 2011 08:28:30 +0200 Sergei Steshenko записано: >> http://akhil.homelinux.org/drop/a273/test.wav - this is a sample >> recorded with $ arecord -D hw:1 -c 1 -r 48000 -f s16_le test.wav >> >> At start and end microphone was muted and amplitude goes exactly at >> centre. But when mic

Re: [Alsa-user] Help with .asoundrc needed

2011-01-09 Thread Mark Goldstein
HI, On Mon, Jan 10, 2011 at 3:57 AM, Leonardo Gomes wrote: > Yes, > > I think the pcm "stream" is ending with plug pcm, the multi and route > pcm are pieces of a unique pcm pipe. > > This maybe help to figure that(this is pcm types order): > > hw --> multi --> route --> plug(ending an PCM pipe) =

Re: [Alsa-user] Help with .asoundrc needed

2011-01-09 Thread Leonardo Gomes
Yes, I think the pcm "stream" is ending with plug pcm, the multi and route pcm are pieces of a unique pcm pipe. This maybe help to figure that(this is pcm types order): hw --> multi --> route --> plug(ending an PCM pipe) = Complete PCM Stream(PCM Working for applications). Or hw --> dmix(opt

Re: [Alsa-user] Inconsistent audio capture using M-Audio Fast Track Pro usb card

2011-01-09 Thread Lewis Pike
Lewis Pike writes: > I am using an "m-audio fast track pro" usb sound card in conjunction > with ALSA version 1.0.23. I'm currently experiencing some problems > using this card's analog capture device. > > I am using the following command to test the capture device: > > arecord -c 1 -f cd -D plu

Re: [Alsa-user] DC Offset on microphone input

2011-01-09 Thread Bill Unruh
On Sun, 9 Jan 2011, Peter Nelson wrote: > On Sun, 2011-01-09 at 17:55 +0200, Sergei Steshenko wrote: > >> Why do you think your ADC converts from DC ? I.e. why do you think you >> have the DC offset in your recording ? >> >> Regards, >> Sergei. >> > > In my case, with two Intel "HDA" devices, th

[Alsa-user] HDMI with more than 2ch ?

2011-01-09 Thread Xavier Bestel
Hi, I'm using HDMI output on an HD 2600, using KMS from kernek 2.6.37. The problem is that only 2ch are supported (not 1, not 3 or more). I tested with speaker-test, it only works with -c 2. So how can I access the other PCM channels ? There are 8 of them available in the HDMI standard. Thanks,

Re: [Alsa-user] Help with .asoundrc needed

2011-01-09 Thread Mark Goldstein
Hi, On Sun, Jan 9, 2011 at 2:06 AM, Leonardo Gomes wrote: > Hi, > > Sorry for late reply, i'm busy all day. > > I think the problem is you using the pcm multi to play wave file(aplay > shell command). > > I think the correct is use a plug pcm to "fix" the channel count. > > A plug pcm is very use

Re: [Alsa-user] DC Offset on microphone input

2011-01-09 Thread Peter Nelson
On Sun, 2011-01-09 at 17:55 +0200, Sergei Steshenko wrote: > Why do you think your ADC converts from DC ? I.e. why do you think you > have the DC offset in your recording ? > > Regards, > Sergei. > In my case, with two Intel "HDA" devices, there is an offset to the recorded values which varie

Re: [Alsa-user] DC Offset on microphone input

2011-01-09 Thread Sergei Steshenko
On Sun, 9 Jan 2011 13:02:39 +0600 IL'dar AKHmetgaleev wrote: > На Sat, 8 Jan 2011 22:42:30 -0800 (PST) > Bill Unruh записано: > > > On Sun, 9 Jan 2011, IL'dar AKHmetgaleev wrote: > > > > > Greetins. > > > > > > I have USB headset which produces a little DC Offset when I'm > > > recording sound

[Alsa-user] MIDI Configuration of Ploytec MIDI<->USB Device

2011-01-09 Thread Johannes Findeisen
Hello all, I am using two Ploytec MIDI cables for connecting my keyboard to my PC. One should work as IN port the other should work as OUT port. These cables have a MIDI plug on one side and a USB plug on the other. The electronics are embedded in one of the ends of the cable. My problem is, that