On Tue, 12 Sep 2006 08:43:09 +0100 Jochen Voss <[EMAIL PROTECTED]> wrote:
> Hello Sergei, > > On Tue, Sep 12, 2006 at 08:30:25AM +0300, Sergei Steshenko wrote: > > I have 7.1, not 5.1, and there are no capture volumes, just the playback > > ones. > > > > There is no HW ADC gain control on 7.1. > > > > [...] > > > > Or 5.1. is indeed more advanced ? > > The 5.1 has a different ADC than the 7.1, so this is ok. > My question is really specific to the Revolution 5.1. > > > Can it be that your speakers are swapped (left <-> right) ? > > No. I checked many times and in different ways. For example > left and right channel of the playback volume control work as > expected (i.e. are NOT swapped). > > > By the way, typically microphone inputs are mono - the plug > > has only three wires - ground, signal and power - the latter is needed > > because PC microphones are typically electret ones. > > > > Stereo recording is expected to work from Line In input though. > > Two things: > > 1) The problem was with the capture volume control. Left and right > input channel were virtually identical, but when I pull down the left > capture volume control, the right channel is muted instead. Apparently, the controls are swapped, so ALSA developers have to look into this. However, if the card can't record stereo from microphone by design, it probably doesn't matter that much. > > 2) I used a stereo microphone which properly records stereo on a > different sound card. Does this card (Revo 5.1) support stereo microphone ? What does user manual say about it ? Assuming you do not mute anything - can you really hear that the sound is stereo from the microphone ? The microphone probably has two "heads", so tapping on one of them should produce loud sound in that channel and silent one in the other channel - is this the case ? I mean, if the card is designed to provide power to electret microphone through the 3--terminal 3.5mm jack, it can't support stereo. > > All the best, > Jochen --Sergei. -- Visit my http://appsfromscratch.berlios.de/ open source project. ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Alsa-user mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/alsa-user
