Re: Microphone levels in Windows Vista Home Premium
Windows Vista has completely changed it's volume mixer. Now you need
to know how to tame the so-called "Pre-Application Volume Control". The
new volume mixer is created on-demand, according to the sound devices
"active". Say, if you have a voice recorder running, but muted, then
you may have a problem of not seeing it in the volume mixer, and the
sliding bar and the mute button may disappeared and can't be control.
The best available way, but not perfect, is to start from the Control
Panel > Hardware and Sound > Sound / Text to Speech. Then available
options will be unhidden for you to config.
Unfortunately, hardware manufacturers are just converting their sound
devices (recording and playback devices) without redesign to cope with
the design of the Pre-Application Volume Control. So, the sound device
drivers are behaving as bad boys.
Take a look at how the PAVC is working:
1. close the sound / volume mixer.
2. run Task Manager, and keep looking at the application tag.
3. double click the sound icon from the system tray, then open the
4. you shall see the Volume Mixer application appearing as a task
under Application tag of the Windows Task Manager.
5. Right-click on the Volume Mixer, and select Go To Process.
SndVol.exe should be highlighted. It's now a Volume Control Applet
where you can find from System32 folder.
Okay, back to the Volume Mixer, you may find dynamic columns of
"active" sound devices and their levels aligned to the maximum output as
determined by volmgr.sys from System32/drivers/.
** If you want a better control, don't rely on the convenience of the
system tray. Go strict to the Control Panel, my advice.