> So my question is: does ALSA support software volume control? The loss > of quality (dynamics) is not so important to me in this case, I'd have > it almost always on 100% - but would sometimes like to quickly reduce > the volume. If it is supported, does it also work when playing back > direct AC3 streams? > > If it can be done: how so? Yes, there is a "softvol" plugin you can attach to an ALSA device that will create a new mixer control. Anything played through though that device will be adjusted according to the softvol mixer control. I would've thought your card would already have a hardware mixer that supports turning the volume down though, but perhaps not. I imagine you would also need a program like xbindkeys that can run a command when a key is pressed, for example so you can press the "mute" button on your keyboard to run "amixer" and get it to set the volume to a low level. It won't work when playing AC3 streams, as the decoding is done inside the amplifier - but presumably whatever program is playing the AC3 stream has a pause button ;-) Cheers, Adam. ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
