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-
- NEW IN V1.4
-
- 1. Wildcards permitted as the input file specification.
-
- 2. Default output file path: is now the current directory, not
- the directory of the source file.
-
- 3. Input files are now opened read-only, so that the message
- "access denied" no longer appears when trying to read from
- read-only devices, such as CD-ROMs.
-
- NEW IN V2.0
-
- 4. New encoding technique permits construction of very compact
- object libraries; also, 16-bit files can now be compressed.
-
- NEW IN V2.1
-
- 5. The compression techniques of V1.4 and V2.0 have been combined
- into this release.
-
- 6. The -o0 command-line option now finds the globally best value
- of order for each frame. It used to find only a "locally"
- optimal value.
-
- 7. The -x option checks the spectral content of audio files two
- different ways, and uses the one that achieves the higher
- compression ratio. A math coprocessor is not required but is
- nevertheless highly recommended.
-
- 8. A new compression after-pass is now applied by default, which
- increases compression, especially in files which contain long
- sequences of flat zero-crossing signal. This after-pass is
- disabled by the "-E" option, however.
-
- NEW IN V2.1a
-
- 9. Columnar screen output.
-
- 10. Bug fix which sometimes prevented -o0 from finding globally
- best value of order.
-
- 11. File extension specified for output file now obeyed instead
- of ignored.
-
- NEW IN V2.1b
-
- 12. Option -E extended to allow -ER, which re-enables the RLE
- afterpass over the compressed frames. Release of RLE.OBJ
- and UN_RLE.OBJ to licensed Evaluators.
-
- NEW IN V2.1c
-
- 13. Special-order version for one customer, which extends the
- range of the lossy parameter.
-
- NEW IN V2.1d
-
- 14. Fixed bug which occasionally caused an underflow run-time
- error.
-
- 15. Fixed bug which kept -x option from operating on 16-bit data.
-
- NEW IN V2.1e
-
- 16. Fixed bug which frequently caused a system lockup or re-boot
- when processing 16-bit files.
-
- NEW IN V2.1f
-
- 17. Changed copyright notice and address of Speech Compression.
-
- 18. Changes to "lossy" algorithm which slow it down some more (sigh)
- but which increase the quality and compression percentages.
-
- NEW IN V2.1g
-
- 19. Fixed bug which caused an incorrect RIFF length to be reported
- when a LIST or other chunk follows the data chunk in a WAV file.
-
- NEW IN V2.1h
-
- 20. Revamped the spectral analysis of 16-big data when -X option is
- not specified. Some 16-bit files compress substantially better.
-
- 21. Fixed bug which prevented old RIFF length from being restored due
- to garbage data after end of RIFF/WAVE data.
-
- 22. Sonarc now handles extra byte(s) at the end of a VOC file (some-
- times added to bring the length of the file up to an even number).
-
- 23. Sonarc now recognizes an obsolete v1.00 VOC format.
-
- NEW IN V2.1i
-
- 24. Sonarc no longer changes the video mode to mode 3; another program
- can now EXEC Sonarc while in a graphics mode without the screen
- being erased.