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kingwgl

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how i can record the sound in file for about half an hour

with vc++6.0 how i can record the sound
in a file .the record time is about half an hour.the file format should be
as possible as small.and the file can be play later.
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chensu
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To make the WAVE file smaller, you may use some compressed file formats, such as ADPCM.

How To Set MCI Wave Audio Recording Format
http://support.microsoft.com/support/kb/articles/Q152/1/80.asp

How To Use GSM Compression in Low-level Wave Recording
http://support.microsoft.com/support/kb/articles/Q153/8/66.asp

Direct-to-Disk Recorder with ACM
http://support.microsoft.com/support/kb/articles/q116/2/93.asp