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[edit] DWVW v1.2

Part of Developers_Notebook-DWVW-Compression Methods.

Origin:

• Invented in 1991 by Magnus Lidstrom
• (C) 1993 NuEdge Development
  • Origin may not be misrepresented

Theory: Essentially to bits as RLE is (normally) to bytes - tries to take out 0 bits of value...

Algorithm:

1. . Count the number of 0 bits until 1 or bitwidth/2 is reached - this is the WWM (Word Width Modifier)
2. . The bit after this is the sign of the WWM (if not 0).
3. . Read ((original-width + WWM) % bit-resolution) - this is the sample "delta"
4. . Next bit is the sign of the delta if delta > 0
5. . Last bit, only if lowest or next lowest, tells whether it is the lowest or next lowest value

Decoding:

[edit] Resources

• AUDIO FILE FORMAT RESOURCE GUIDE, Version 1.1, by Dave Huizing