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-
- ┌──────────────────────────────────────────┐
- │ Creative Labs File Formats (SBI/CMF/IBK) │
- └──────────────────────────────────────────┘
-
- Written for the PC-GPE by Mark Feldman
- e-mail address : u914097@student.canberra.edu.au
- myndale@cairo.anu.edu.au
-
- ┌───────────────────────────────────────────┐
- │ THIS FILE MAY NOT BE DISTRIBUTED │
- │ SEPARATE TO THE ENTIRE PC-GPE COLLECTION. │
- └───────────────────────────────────────────┘
-
-
- ┌────────────┬───────────────────────────────────────────────────────────────
- │ Disclaimer │
- └────────────┘
-
- I assume no responsibility whatsoever for any effect that this file, the
- information contained therein or the use thereof has on you, your sanity,
- computer, spouse, children, pets or anything else related to you or your
- existance. No warranty is provided nor implied with this information.
-
- ┌────────────────────────────────────────────┬───────────────────────────────
- │ Sound Blaster Instrument File Format (SBI) │
- └────────────────────────────────────────────┘
-
- The SBI format contains the register values for the FM chip to synthesize
- an instrument.
-
- ┌────────────────────────────────────────────────────────────────────────┐
- │ Offset Description │
- ├────────────────────────────────────────────────────────────────────────┤
- │ 00h-03h Contains id characters "SBI" followed by byte 1Ah │
- │ 04h-23h Instrument name, NULL terminated string │
- │ 24h Modulator Sound Characteristic (Mult, KSR, EG, VIB, AM) │
- │ 25h Carrier Sound Characteristic │
- │ 26h Modulator Scaling/Output Level │
- │ 27h Carrier Scaling/Output Level │
- │ 28h Modulator Attack/Delay │
- │ 29h Carrier Attack/Delay │
- │ 2Ah Modulator Sustain/Release │
- │ 2Bh Carrier Sustain/Release │
- │ 2Ch Modulator Wave Seelct │
- │ 2Dh Carrier Wave Select │
- │ 2Eh Feedback/Connection │
- │ 2Fh-33h Reserved │
- └────────────────────────────────────────────────────────────────────────┘
-
-
- ┌──────────────────────────────────┬─────────────────────────────────────────
- │ Creative Music File Format (CMF) │
- └──────────────────────────────────┘
-
- The CMF file format consists of 3 blocks: the header block, the instrument
- block and the music block.
-
-
- The CMF Header Block
- ────────────────────
-
- ┌────────────────────────────────────────────────────────────────────────┐
- │ Offset Description │
- ├────────────────────────────────────────────────────────────────────────┤
- │ 00h-03h Contains id characters "CTMF" │
- │ 04h-05h CMF Format Version MSB = major version, lsb = minor version │
- │ 06h-07h File offset of the instrument block │
- │ 08h-09h File offset of the music block │
- │ 0Ah-0Bh Clock ticks per quarter note (one beat) default = 120 │
- │ 0Ch-0Dh Clock ticks per second │
- │ 0Eh-0Fh File offset of the music title (0 = none) │
- │ 10h-11h File offset of the composer name (0 = none) │
- │ 12h-13h File offset of the remarks (0 = none) │
- │ 14h-23h Channel-In-Use Table │
- │ 24h-25h Number of instruments used │
- │ 26h-27h Basic Tempo │
- │ 28h-? Title, composer and remarks stored here │
- └────────────────────────────────────────────────────────────────────────┘
-
-
- The CMF Instrument Block
- ────────────────────────
-
- The instrument block contains one 16 byte data structure for each instrument
- in the piece. Each record is of the same format as bytes 24h-33h in the
- SBI file format.
-
-
- The CMF Music Block
- ───────────────────
-
- The music block adheres to the standard MIDI file format, and can have from
- 1 to 16 instruments. The PC-GPE file MIDI.TXT contains more information
- on this file format.
-
- The music block consists of an alternating seqence of time and MIDI event
- records:
-
- ┌─────┬──────────┬─────┬──────────┬─────┬──────────┬─
- │dTime│MIDI Event│dTime│MIDI Event│dTime│MIDI Event│ ........
- └─────┴──────────┴─────┴──────────┴─────┴──────────┴─
-
- dTime (delta Time) is the amount of time before the following MIDI event.
- MIDI Event is any MIDI channel message (see MIDI.TXT).
-
-
- The CMF file format defines the following MIDI Control Change events:
-
- ┌────────────────────────────────────────────────────────────────────────┐
- │ Control │
- │ Number Control Data │
- ├────────────────────────────────────────────────────────────────────────┤
- │ 66h 1-127, used as markers in the music │
- │ 67h 0 - melody mode, 1 = rhythm mode │
- │ 68h 0-127, changes the pitch of all following notes upward │
- │ by the given number of 1/128 semitones │
- │ 69h 0-127, changes the pitch of all following notes downward │
- │ by the given number of 1/128 semitones │
- └────────────────────────────────────────────────────────────────────────┘
-
- In rhythm mode, the last five channels are allocated for the percussion
- instruments:
-
- ┌───────────────────────────┐
- │ Channel Instrument │
- ├───────────────────────────┤
- │ 12h Bass Drum │
- │ 13h Snare Drum │
- │ 14h Tom-Tom │
- │ 15h Top Cymbal │
- │ 16h High-hat Cymbal │
- └───────────────────────────┘
-
-
- ┌─────────────────────────────────────────────────┬──────────────────────────
- │ Sound Blaster Instrument Bank File Format (IBK) │
- └─────────────────────────────────────────────────┘
-
- A bank file is a group of up to 128 instruments.
-
- ┌────────────────────────────────────────────────────────────────────────┐
- │ Offset Description │
- ├────────────────────────────────────────────────────────────────────────┤
- │ 00h-03h Contains id characters "IBK" followed by byte 1Ah │
- │ 04h-803h Parameters for 128 instruments, 16 bytes for each instrument │
- │ in the same format as bytes 24h-33h in the SBI format │
- │ 804h-C83h Instrument names for 128 instruments, 9 bytes for each │
- │ instrument, each name must be null terminated │
- └────────────────────────────────────────────────────────────────────────┘
-
- ┌────────────┬───────────────────────────────────────────────────────────────
- │ References │
- └────────────┘
-
- Title : Sound Blaster - The Official Book
- Authors : Richard Heimlich, David M. Golden, Ivan Luk, Peter M. Ridge
- Publishers : Osborne/McGraw Hill
- ISBN : 0-07-881907-5
-