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Microsoft GSM 6.10 Audio Format on NT

Posted on 1998-06-19
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Last Modified: 2013-12-03
I've written an app that uses the Microsoft GSM 6.10 Audio format for recording and playback of wav files. It works fine on Windows 95 but not on Windows NT. The Microsoft Sound Recorder is unable to use this format as well on Windows NT. I need to know how to get this format working under NT? Thanks ahead of time for any help!!
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Question by:WDB
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Expert Comment

by:ms99y
ID: 1408208
I suggest  you check the installed audio compression codecs
under NT.
You say, your app. runs under 95, that means the GSM610 audio codec is installed and enabled in 95. You get information about the installed codecs from the multimedia properties under Control Panel.

So you must install and enable the GSM610 codec under NT,
I think this solves  the problem.

ms99y



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Expert Comment

by:ms99y
ID: 1408209
I got your reply to my question about using waveout to play GSM610 wav files. You suggested me the mcisendcommand function. I tried your program and it worked. If it is not too much ,
would you send me the recording portion of your code. I also want to record audio in GSM610 format. Thanks for your help.(my mail account :    ms99y@yahoo.com)

And I made an experiment about  GSM610 codec, first disabled the codec, added the mciGetErrorString  function to your program and ran, it gave an error "MMSYSTEM 3326 No wave device that can play files in the current format is installed ".
After enabling the codec it worked properly.

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Author Comment

by:WDB
ID: 1408210
The GSM610 codec is installed and enabled but doesn't work under NT. I'm assuming it's a problem with the sound card. Thanks anyway for your answer.
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Accepted Solution

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barlav earned 400 total points
ID: 1408211
This is a sound card problem. I've seen some Sound Blasters fail to support the Micorsoft GSM format. I have an NT work station and it works O.K. for me. I have a Creative Sound Blaster 16 . Try a different sound card and it should work.
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