Dick,
I am using two sound cards in my Dell 530 workstation. One on the mother
board, an Analog Devices AC97. The other is Soundblaster 16 PCI.
Interesting when installed the 16 PCI became Index 0 not index 1 as I
expected. WriteLog uses 16 PCI fine. I left speakers connected to the Sound
Max. But I have just discoverd a problem there. I tried to use the AC97 to
decode AO40 telemetry with AO40Rcv soundboard software. Every frame has CRC
error! When I run the same audio to 16 PCI every frame is clean. ugh.
So today I am going to install a third sound card.
BTW, my volume control display says it is the Microsoft Volume Control and
it correctly displays both mixers.
WriteLog could not correctly control the Line In Mute on play back - that
is where very loud noise got into mic audio. I was switching the Mic and
Wave correctly but was muting some other channel - not Line In. This caused
me to put the 16 PCI card in my new computer.
Jerry, W6IHG
At 08:36 PM 11/8/2001 -0500, Dick Green wrote:
>Has anyone successfully configured two soundboards under Windows 2000 (or
>any other operating system, for that matter?)
>
>I decided to try two soundboards for two reasons: 1) Despite the use of
>isolation transformers on all the inputs and outputs of the soundboard, the
>built-in Yamaha chipset in my Dell puts *very* loud computer noise in the
>mic line when Writelog uses it under Windows 2000. The computer noise pulses
>in step with rig polling and movement of the mouse. Amazingly, the noise
>does *not* exist when Writelog runs the exact same hardware under Windows
>98, so it must be some mode that W2K drives on the soundboard but Win98 does
>not. 2) It would be nice to direct Windows sounds to one soundboard and use
>a second dedicated soundboard for Writelog (as suggested in the manual.)
>
>I installed a Creative Soundblaster 16 as the second soundboard and found
>that the mic noise was greatly reduced. It's still slightly audible if I
>press PTT on the rig and don't speak, but I doubt anyone out there in radio
>land will notice when I'm speaking or sending canned messages. This
>soundboard seems like the solution to the noise problem.
>
>Now for the two soundboard problem: Everything works fine if I disable the
>Yamaha soundboard in the BIOS and just use the Soundblaster. But if I try to
>run both soundboards, the mixer functions work only on the Yamaha chipset
>and not on the Soundblaster. This is true for the default Windows mixer, the
>Creative mixer that came with the Soundblaster, and Writelog's Sound Board
>Mixer Control applet. All three of them support the Yamaha chipset just
>fine. If I try to set the Windows mixer to the Soundblaster (it's listed as
>a choice for preferred device), it says something's wrong with the board. If
>I switch from the Yamaha chipset to the Soundblaster under the Creative
>mixer, it becomes a thin line (i.e., no controls are displayed.) If I set
>the soundboard index in writelog.ini to 0, the Writelog mixer applet uses
>the Yamaha chipset and works fine. But if I set the soundboard index in
>writelog.ini to 1, the controls do not function in the Writelog mixer
>applet.
>
>Note that if I set the soundboard index to 1 in writelog.ini, Writelog
>correctly uses the Soundblaster. Trouble is, I can't set the mic gain and
>output volume. I need a working mixer for that soundboard.
>
>Does anyone have any idea what's happening here and whether there's a fix?
>
>73, Dick WC1M
>
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>http://lists.contesting.com/mailman/listinfo/writelog
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Dr. Jerry R. Pixton, PIXOS Designs LLC
http://www.pixos.com/designs/RadioTuner/
jpixton@shentel.net
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