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Several people have commented that the command I documented in my
original post (quoted again below) doesn't work on Vista or Windows
7. <font face="Arial"> I overlooked a minor issue. <br>
<br>
You have to change "</font><font face="Arial">sndvol32" to just
"sndvol" without the 32 in command lines for Vista and Win7 (MS
changed the name of the volume control applet slightly in these
versions of Windows.)<br>
<br>
========= REPOST ORIGINAL POST ===========<br>
<br>
</font>
<pre wrap="">Users of ham sound card applications are constantly fiddling with setting the
RECORD (Radio RX) and PLAY (Radio TX) levels of Windows sound cards. After a
considerable amount of experimentation and Internet research, I have discovered
that one can make access to the controls for added sound cards a LOT simpler.
*** Command-Line or Shortcut Access to Windows Audio Mixer ***
"sndvol32" is the Microsoft applet that displays the volume controls for
soundcard playback and recording.
It is normally located in the \WINDOWS\system32\ folder. Normally it is called
up by clicking or double-clicking the speaker icon in the system tray. By
default, it appears with the PLAYBACK mixer for the first or primary sound
device. A single-click produces just the master volume control. A double-click
displays the entire multi-channel mixer.
Accessing the RECORD mixer (or either PLAYBACK or RECORD for added audio
devices) requires a clumsy multiple mouse-click process. You have to launch the
playback side of the default device as usual. Then pull down "Options,
Properties", then choose the desired device from a pulldown menu and finally
click the radio buttons to select either "PLAYBACK" or "RECORDING", and then
click "OK" to get to any alternate mixer.
It is possible to directly display either mode for any sound device from the
Windows command line, or from a desktop shortcut by using arguments
("switches") to the basic "sndvol32" command.
Format :
sndvol32 [-Daudio_device_number] [-Record | -Play] [-Normal | -Small | -Tray]
The switch delimiters can be either "/" or "-". Only the first letter of each
option is required.
The "-D" parameter is only needed if you have more than one audio device
installed. The first device is "-D0" (number "zero", not letter "Oh"). The
first ADDED audio device is "-D1", etc. "sndvol32" alone with no arguments
calls up the play mixer for the first device; i.e. exactly the same effect as
double-clicking the speaker icon in the tray.
Example :
sndvol32 -D1 -R -S
[This would call up the SECOND sound device's RECORD mixer in the small mode;
i.e. only the master control.]
NOTE: The device number may NOT be the same for PLAY and RECORD for a given
device --if-- you have INPUT-only devices like a webcam with a mic but not a
speaker present, or OUTPUT-only devices such as digital speakers or bluetooth
earpieces present. You may have to experiment with different command strings
typed at the Windows command prompt (a.k.a. "DOS Box), to determine which "-D
number" makes the desired device mixer appear in PLAYBACK and/or RECORD.
Further, the device numbers are assigned "first come, first served", based on
the order that you plug in USB devices. For cosistency, you must always plug
them into the same port in the same order (or just leave them on the same ports
permanently. To keep device numbers the same on record and playback, always
insert any RECORD-only or PLAY-only devices last.
Once you determine the correct command lines for the record and play sides of
the desired device, you can place them into Windows shortcuts on the desktop
for instant double-click access. Right-click the desktop, choose "New,
Shortcut". In the resulting dialog, enter the command line exactly as you typed
it in the command prompt window, click "Next", give it a label such as
"SND2 Rec", "SND3 PB", "Radio TX" or "Radio RX", and you're done! Quick
direct access to the second card's volume controls.
-------------------------------------------------------------------------------
--
Stephen H. Smith wa8lmf (at) aol.com
Skype: WA8LMF
Home Page: <a class="moz-txt-link-freetext" href="http://wa8lmf.net">http://wa8lmf.net</a>
High-Performance Software-Only Packet TNC
<a class="moz-txt-link-freetext" href="http://wa8lmf.net/miscinfo/UZ7HO-Soundmodem-Install-Ver-0.45-Beta.exe">http://wa8lmf.net/miscinfo/UZ7HO-Soundmodem-Install-Ver-0.45-Beta.exe</a>
High Quality Calibrated Static Maps for Any APRS App
<a class="moz-txt-link-freetext" href="http://wa8lmf.net/aprs/PM9_StaticMap_Export.htm">http://wa8lmf.net/aprs/PM9_StaticMap_Export.htm</a>
Vista & Win7 Install Issues for UI-View and Precision Mapping
<a class="moz-txt-link-freetext" href="http://wa8lmf.net/aprs/UIview_Notes.htm#VistaWin7">http://wa8lmf.net/aprs/UIview_Notes.htm#VistaWin7</a>
"APRS 101" Explanation of APRS Path Selection & Digipeating
<a class="moz-txt-link-freetext" href="http://wa8lmf.net/DigiPaths">http://wa8lmf.net/DigiPaths</a>
</pre>
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