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- I have figured out most of the .VOC format, and here it is:
- =============================================================
-
-
- HEADER: (bytes 00-19)
- =======
- byte # Description
- ------ -----------
- 00-12 Creative Voice File
- 13 1A (eof to abort printing of file)
- 14-15 1A 00 word offset in file of first data block
- 16-17 Version number (VOC-HDR puts 0A 01)
- 18-19 2's Comp of Ver. # + 1234h (VOC-HDR puts 29 11)
-
- DATA: (bytes 1A+) A series of data blocks terminated by 00
- =====
-
- Data Block: TYPE(1-byte), SIZE(3-bytes), INFO(0+ bytes)
- -----------
-
- TYPE Description Size (3-byte int) info
- ---- ----------- ----------------- ----
- 01 Sound data 2+length of data *
- 02 ????
- 03 Silence 3 *
- 04 Marker 2 marker #
- 05 ????
- 06 Repeat 2 # of repetitions
- 07 End repeat 0
- 08+ ????
-
- *Sound info format: *Silence info format:
- ----------------- --------------------
- 00 Sample rate 00-01 Length of silence (weird encryption)
- 01 Compression type 02 38
- 02+ Data
-
-
- Sample rate -- SR byte = 256-(1000000/sample_rate)
- Length of silence -- (# of .1 seconds encrypted)
- Compression type -- 8-bits = 0
- 4-bits = 1
- 2.5-bits = 2
- 2-bits = 3
- Multi DAC = 3+(# of channels)
-
- Silence encoding in VOXKIT finds quiet places in file, and creates a separate
- block that is of type Silence.
-
-
-
- The only remaining mysteries are what types 2&5&8+ are if they exist, and the
- exact conversion of the silence length integer to seconds. If you have any
- more information, please email me at: galt@dsd.es.com
- I hope this info will help to create more public domain utilities for the
- soundblaster.
- Greg
-
-