Re: [Audacity-devel] Can you Linux user give the mixer toolbar one more try?
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From: Richard A. <ri...@au...> - 2009-07-14 21:05:35
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On Tue, 2009-07-14 at 21:38 +0100, Gale Andrews wrote: > When I last had Audacity CVS builds working on Linux (before the > above fixes), using the ALSA:Pulse device on Ubuntu 9.04, I noticed > the output slider was affecting the meter. Is this fixed now as well? > I'm not suggesting we hold for this if it doesn't work, but it would > be helpful to know. I don't remember seeing this before, but I suspect you will find that in Audio Device Info Portmixer is using Emulated playback volume not Native, in which case it will affect the meters (I've just realised why), and it's not been fixed. The reasoning is that emulated portmixer playback volume changes the amplification applied in the Mixer before the audio is pushed into the playback buffers for the AudioIO class. So turning down the emulated volume makes the numbers fed to the sound card smaller. The meters are driven off the AudioIO call-back, so will reflect the actual volume pushed to the sound card, as affected by the software volume control. I agree this has all sorts of silly consequences, and should be added to the list, because it probably isn't that hard to fix (at a small performance cost for pulseaudio users, but their performance is pretty poor anyway). Richard |