71 lines
2.8 KiB
Plaintext
71 lines
2.8 KiB
Plaintext
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What is VSound?
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---------------
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VSound is a virtual sound driver for Impulse Tracker. It actually uses
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Microsoft's DirectSound to provide output on ANY soundcard supported by
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Windows '95 or Windows '98. It does NOT support Windows NT.
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It does take a little effort to setup and doesn't perform quite as well
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as the native drivers, so if you have a SB16, ESS or some other card
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directly supported by IT, don't bother messing around VSound. If you have
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a SBPro compatible card, some PCI card or anything else that isn't being
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used to its maximum capabilities, then give these files a try.
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How to use these files
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----------------------
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You MUST have DirectX installed. It was written with the DirectX6 SDK,
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although I'm pretty sure DirectSound 5 is sufficient.
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1. Copy ITVSOUND.VXD into your Windows\System directory
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(normally C:\WINDOWS\SYSTEM)
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Note that the file may NOT show up in Window's Explorer since they have
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a system extension (.VXD). Use DOS, or enable (unhide) system files in
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your Explorer configuration.
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2. In your Windows directory (normally C:\WINDOWS), edit your SYSTEM.INI file
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and include the line:
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device=itvsound.vxd
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anywhere in the [386Enh] section
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3. Reboot your computer
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4. Run Server.EXE
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5. Run "IT"
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Configuring the driver
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----------------------
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The driver can be configured by modifying Window's Registry by running
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"regedit" (which comes with Windows). The variables can be found at:
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"KHEY_LOCAL_MACHINE\Software\Jeffrey Lim\Impulse Tracker VSound Server"
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The 4 variables are:
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BufferSize - The size of the DirectSound buffer in kb.
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Permitted ranges from 4 to 64, default 24
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BufferThreshold - The size of the buffer that IT tries to maintain in kb.
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Permitted ranges from 2 to 32, default 21
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BufferType - 0 = DualBuffer (BufferSize is logically split into 2 sections)
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1 = QuadBuffer (BufferSize is logically split into 4 sections)
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2 = OctBuffer (BufferSize is logically split into 8 sections)
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(recommended, default)
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MixSpeed - Mixing rate to be used in Hz.
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Permitted ranges from 11025 to 64000, default 44100
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You will need to restart the server before these changes take effect.
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Known Problems
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--------------
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1. This driver only works with Win95 and Win98, NOT WinNT (I'll try a WinNT
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driver sometime).
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2. There is an obvious latency due to the size of the buffers and the delay
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that is inherent to DirectSound. Reducing the BufferSize and BufferThreshold
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values can reduce this latency, however, smaller values can also cause the
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sound to break up.
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Try using the values:
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1. BufferSize=16, BufferThreshold=14, BufferType=2, MixSpeed=44100
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