Microsoft KB Archive/89986

= Windows Sound System Supports Audio Written for Windows 3.1 =

PSS ID Number: 89986

Article Last Modified on 11/14/2003

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The information in this article applies to:


 * Microsoft Windows Sound System 1.0
 * Microsoft Windows Sound System 1.0a
 * Microsoft Windows Sound System 2.0

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This article was previously published under Q89986



SUMMARY
Windows Sound System supports Windows-based applications that have built-in sound and conform to the Windows 3.1 Software Development Kit (SDK).



MORE INFORMATION
Windows Sound System supports Windows software that uses waveform (.WAV) and MIDI (.MID or .RMI) audio written for Windows 3.1 or Windows with Multimedia Extensions 1.0. Windows Sound System supports MS-DOS-based software written for Adlib or Sound Blaster cards only. Sound Blaster support requires configuration through Windows Control Panel or by running the GAMECNFG.EXE program that comes with Windows Sound System 2.0.

Windows Sound System uses installable device drivers for wave-out, wave-in, MIDI-out, and auxiliary audio. Windows-based software can access all these types using standard Windows 3.1 audio API calls.

The following restrictions apply to the wave-in and wave-out API support:

 Simultaneous record and playback of audio is not possible with the current driver (version 1.0). Only mono/stereo playback is possible. Only 16/8-bit linear PCM playback is possible without the use of the Audio Compression Manager (ACM) module. (Mu-law and A-law are not supported in version 1.0).  The following sampling rates are directly supported by the board. Other ones can be achieved through the ACM module:      5510, 6620, 8000, 9600, 11025, 16000, 18900, 22050, 27420, 32000, 33075, 37800, 44100, 48000                       

The following restrictions apply to the MIDI-out support:

 Only 12 simultaneous voices (including drums) are supported.</li> The patches are General MIDI compliant.</li> Each voice is either entirely on the left, right, or both channels; there is no fading.</li> The only MIDI messages used are:

Note on/off

Program change

Pitch bend

Balance

Volume level

</li></ul>

Additional query words: 1.00

Keywords: KB89986

Technology: kbWinSoundSys100 kbWinSoundSys100a kbWinSoundSys200 kbWinSoundSysSearch

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