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Short: | Fibonacci (de)compression for 8SVX, V1.3 |
Author: | wnoekert-online.de (Wilhelm Noeker) |
Uploader: | wnoeker t-online de (Wilhelm Noeker) |
Type: | mus/misc |
Architecture: | m68k-amigaos |
Date: | 1996-10-28 |
Download: | mus/misc/wavepak.lha - View contents | Readme: | mus/misc/wavepak.readme |
Downloads: | 1260 |
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"wavepak" is a Fibonacci-Delta / Exponential-Delta encoder / decoder for
IFF 8SVX samples. Both are efficient, but lossy, compression techniques:
They are fast and achieve a guaranteed compression ratio of 50 %, but at
the cost of some 'quantization' noise.
Exponential Delta differs from the well-known Fibonacci Delta compression
only by the compression table that it uses. I believe it results in less
distortion than FDC. It is not an official standard (yet?), comments are
welcome.
New since V1.2: found out how to make C use bigger file buffers
(should be *really* faster now ;-)
New since V1.1: better I/O buffering (should be faster now),
fixed a bug concerning hexdump of IFF chunks
New since V1.0: built-in command summary, version string,
no more progress indicator unless in "verbose" mode
"wavepak" is Freeware, C source is included.
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Contents of mus/misc/wavepak.lha
PERMSSN UID GID PACKED SIZE RATIO CRC STAMP NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic] 19961 24176 82.6% -lh5- c32b Apr 3 1996 wavepak/sample.iff
[generic] 9985 18912 52.8% -lh5- f002 Oct 26 1996 wavepak/wavepak
[generic] 4086 12444 32.8% -lh5- 9752 Oct 26 1996 wavepak/wavepak.c
[generic] 3055 6742 45.3% -lh5- af31 Oct 27 1996 wavepak/wavepak.doc
[generic] 269 628 42.8% -lh5- 4675 Oct 27 1996 wavepak.info
---------- ----------- ------- ------- ------ ---------- ------------ -------------
Total 5 files 37356 62902 59.4% Oct 27 1996
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