Microphone sampling speed problem.

  • Thread starter Thread starter John Travell
  • Start date Start date
J

John Travell

Folks,

I have a wierd problem with what I perceive to be microphone sampling rate.
If I run 'sound recorder' and record a 3 second test sample, the recorder
window claims that 6 seconds have elapsed, and playback takes 6 seconds with
the recorded sound playing at half speed.
In other words, a normal voice becomes a very low pitched and
incomprehensible groan...
This problem also affects voice chat in instant messenger, so it's not just
the one app stuffed up

Environment. W2Ksp3. Lucky Star K7VAT M/B Athlon XP+1800 cpu effectively
underclocked at 1100Mhz. Audio h/w is on the VT82C686A chip on the M/B.
Latest drivers make no difference.

If I boot from WinME the sound recorder works correctly, so clearly the
hardware is OK.

An extensive search, both on the PC in question and numerous internet
resources, has failed to reveal where Windows keeps the sampling rate
information.

Does anyone have this information available, or a pointer to where I might
find it?



John Travell
john - at - travell - dot - uk - dot - net
 
Maybe the mic is recording correctly but the playback is the problem. Try
recording a WAV file, save it, and play it back in a different program. I'd
recommend CoolEdit (or whatever they call it now, Adobe bought it?). Or any
other WAV player would work.

If the other WAV software plays it back slow, then you know it was recorded
wrong. But probably not recorded slow because... how could it do that?
Instead, maybe Sound Recorder just set the wrong file info; telling the WAV it
was 22.05kHz instead of 44.1kHz (or halving the birate).

While you're at it, maybe try recording with the mic in a different program.
That would tell you if it's the hardware driver or not. Good luck.
 
Problem is, it's not only sound recorder.

Trying to do an audio conversation in Messenger 6.1 gives the same effect.
The person at the other end just hears a low growl instead of a normal
voice.
I have already updated the AC97 audio drivers to the latest, without
changing the problem, leading me to suspect there is a registry setting
involved somewhere.


John Travell

cgilbert said:
Maybe the mic is recording correctly but the playback is the problem. Try
recording a WAV file, save it, and play it back in a different program. I'd
recommend CoolEdit (or whatever they call it now, Adobe bought it?). Or any
other WAV player would work.

If the other WAV software plays it back slow, then you know it was recorded
wrong. But probably not recorded slow because... how could it do that?
Instead, maybe Sound Recorder just set the wrong file info; telling the WAV it
was 22.05kHz instead of 44.1kHz (or halving the birate).

While you're at it, maybe try recording with the mic in a different program.
That would tell you if it's the hardware driver or not. Good luck.
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