Full Duplex Capability Lost with Wave Files

[Guest]

Following a clean install upgrade from Windows ME to Windows XP Pro SP2 on a
Dell Dimension 4100 (933MHz Pentium III, 512MB RAM) with an OEM-installed SB
Live! Value (WDM) PCI card onboard using the XP install drivers for the card
and the XP install apps for Play Control and Record Control (v.5.1 Build 2600
et al), full duplex wave audio (recording one wave file while simultaneously
playing back one or more other wave files) ups and disappears – ME had it, XP
doesn’t.

With Wave selected as the Input on Microsoft Record Control, the record side
of software mixers I use on the XP OS (e.g. DSP Quartz AudioMaster, NCH Swift
Sound MixPad / WavePad) fail to acquire or record the wave signal(s) being
played back by the mixer side of the same application. Stand alone recorders
(e.g. Microsoft Sound Recorder, Roxio Easy Audio Capture, HotKey Sound
Recorder) also fail to acquire or record the wave signal(s) being played back
by the aforementioned mixers. But if I switch the Record Control app’s input
to Microphone during the record pass, the Mic records without incident to
whatever app I’ve designated as the recorder. Or if I launch Windows Media
Player, playback a CD and select Wave as the Record Control app’s input, CD
audio will be recorded to whatever app I’ve designated as the recorder. How
can this be? Shouldn’t the CD’s signal show up on Record Control’s CD Audio
input and, if so, what’s it doing on the Wave input and how do I rectify that
bogus assignment? If the CD has somehow captured the Wave input to the
Record Control app, is that what is inhibiting full duplex when it comes to
wave files?

Creative’s AutoUpdate shows all drivers for the SB Live! sound card are up
to date. DXDIAG sound tests are all successful with no problems (text file
results available if anyone cares to see them). But the manual test for
full-duplex capability (Microsoft Knowledge Base 310353 and 915092) using
twin Sound Recorders fails as the second copy (record-designated) Sound
Recorder does not acquire or record a signal from the first copy
(playback-designated) Sound Recorder (no error codes display at any time
during the test). Clean booting the XP OS and running the same twin Sound
Recorders test does not rectify the problem.

Because the same sound card with ME drivers allowed full-duplex operation
with wave files under the ME OS but that capability is lost under the XP OS,
I suspect something might be amiss in the XP drivers and/or Record/Play
Control apps that XP loaded during the OS install.

Anyone have a clue as to what’s going on here? And how to fix it? I’m
stumped.

TIA . . .

 

[Guest]

For benefit of anyone who hits this thread in a search:

FWIW - Following 5-weeks of troubleshooting this problem with Microsoft Tech
Support (including a parallel install of the XP SP2 OS), we reached the
following conclusion: Since the OEM sound card (Creative Model CT4780) was
known to operate in full-duplex mode without incident under my system's prior
ME OS but the same card fails to consistently operate in full-duplex mode
while running under a virgin parallel install of the XP OS, the source of my
full-duplex problem must lie in the files and drivers resident on the XP OS
CDROM and dropped to my system by the OS loader/installer. There really
isn't any other plausible explanation. Absent its drivers, a sound card's
native hardware state is either going to be full-duplex or it isn't - it
would never be full-duplex sometimes and half-duplex (or simplex) the rest.

The problem was resolved when a retail, nearly identical, sound card
(Creative Model SB0410) and the drivers and files from its CDROM, were
installed on the same system.

Perhaps, somewhere, drivers exist that will permit the CT4780 to operate
consistently in full-duplex mode on an XP SP2 OS - but neither Microsoft, nor
I, had any success in locating them.

 

[Guest]

For benefit of anyone who hits this thread in a search:

FWIW - Following 5-weeks of troubleshooting this problem with Microsoft Tech
Support (including a parallel install of the XP SP2 OS), we reached the
following conclusion: Since the OEM sound card (Creative Model CT4780) was
known to operate in full-duplex mode without incident under my system's prior
ME OS but the same card fails to consistently operate in full-duplex mode
while running under a virgin parallel install of the XP OS, the source of my
full-duplex problem must lie in the files and drivers resident on the XP OS
CDROM and dropped to my system by the OS loader/installer. There really
isn't any other plausible explanation. Absent its drivers, a sound card's
native hardware state is either going to be full-duplex or it isn't - it
would never be full-duplex sometimes and half-duplex (or simplex) the rest.

The problem was resolved when a retail, nearly identical, sound card
(Creative Model SB0410) and the drivers and files from its CDROM, were
installed on the same system.

Perhaps, somewhere, drivers exist that will permit the CT4780 to operate
consistently in full-duplex mode on an XP SP2 OS - but neither Microsoft, nor
I, had any success in locating them.

 

[Guest]

For benefit of anyone who hits this thread in a search:

FWIW - Following 5-weeks of troubleshooting this problem with Microsoft Tech
Support (including a parallel install of the XP SP2 OS), we reached the
following conclusion: Since the OEM sound card (Creative Model CT4780) was
known to operate in full-duplex mode without incident under my system's prior
ME OS but the same card fails to consistently operate in full-duplex mode
while running under a virgin parallel install of the XP OS, the source of my
full-duplex problem must lie in the files and drivers resident on the XP OS
CDROM and dropped to my system by the OS loader/installer. There really
isn't any other plausible explanation. Absent its drivers, a sound card's
native hardware state is either going to be full-duplex or it isn't - it
would never be full-duplex sometimes and half-duplex (or simplex) the rest.

The problem was resolved when a retail, nearly identical, sound card
(Creative Model SB0410) and the drivers and files from its CDROM, were
installed on the same system.

Perhaps, somewhere, drivers exist that will permit the CT4780 to operate
consistently in full-duplex mode on an XP SP2 OS - but neither Microsoft, nor
I, had any success in locating them.

 

[Guest]

For benefit of anyone who hits this thread in a search:

FWIW - Following 5-weeks of troubleshooting this problem with Microsoft Tech
Support (including a parallel install of the XP SP2 OS), we reached the
following conclusion: Since the OEM sound card (Creative Model CT4780) was
known to operate in full-duplex mode without incident under my system's prior
ME OS but the same card fails to consistently operate in full-duplex mode
while running under a virgin parallel install of the XP OS, the source of my
full-duplex problem must lie in the files and drivers resident on the XP OS
CDROM and dropped to my system by the OS loader/installer. There really
isn't any other plausible explanation. Absent its drivers, a sound card's
native hardware state is either going to be full-duplex or it isn't - it
would never be full-duplex sometimes and half-duplex (or simplex) the rest.

The problem was resolved when a retail, nearly identical, sound card
(Creative Model SB0410) and the drivers and files from its CDROM, were
installed on the same system.

Perhaps, somewhere, drivers exist that will permit the CT4780 to operate
consistently in full-duplex mode on an XP SP2 OS - but neither Microsoft, nor
I, had any success in locating them.

 

[Chuck]

Oddly enough, this was a common complaint with very early versions of XP.
(pre gold)
At the time, it was assumed to be one of those things that got broken in the
transition from 9x to nt based systems.
Another problem was certain functionality in relation to midi. Seems that
something changed concerning the ability to split midi data between
devices-(real and software)
Finally, "real time" operations became harder to support. There was a
service loop in the ops system that became much more complex and time
consuming.
This caused problems with some of the game realted devices.

I hope you find a solution, I never did for the sound duplex problem. (other
than to use two PCs)

 

[theplectrum]

For benefit of anyone who hits this thread in a search:

FWIW - Following 5-weeks of troubleshooting this problem with Microsoft
Tech
Support (including a parallel install of the XP SP2 OS), we reached the
following conclusion: Since the OEM sound card (Creative Model CT4780) was
known to operate in full-duplex mode without incident under my system's
prior
ME OS but the same card fails to consistently operate in full-duplex mode
while running under a virgin parallel install of the XP OS, the source of
my
full-duplex problem must lie in the files and drivers resident on the XP
OS
CDROM and dropped to my system by the OS loader/installer. There really
isn't any other plausible explanation. Absent its drivers, a sound card's
native hardware state is either going to be full-duplex or it isn't - it
would never be full-duplex sometimes and half-duplex (or simplex) the
rest.

The problem was resolved when a retail, nearly identical, sound card
(Creative Model SB0410) and the drivers and files from its CDROM, were
installed on the same system.

Perhaps, somewhere, drivers exist that will permit the CT4780 to operate
consistently in full-duplex mode on an XP SP2 OS - but neither Microsoft,
nor
I, had any success in locating them.

Google search :

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