Audio drivers: Difference between revisions
(Added the replayer Sabre by CutterCross, sorted game reblayers by alphabetical, homogenized some bullet points for easier cross reference.) |
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Most can't handle expansions at all, as NES games in an unmodified NES cannot use expansion audio. | Most can't handle expansions at all, as NES games in an unmodified NES cannot use expansion audio. | ||
They usually operate by translating a text export into assembly language data files that are included into the game's source code. | They usually operate by translating a text export into assembly language data files that are included into the game's source code. | ||
=== Famistudio music engine === | |||
[http://forums.nesdev.org/viewtopic.php?f=2&t=20825&p=256016 Famistudio music engine] by bleubleu | |||
* Meant to go with its own music tool (Famistudio) | |||
* NESASM, CA65, ASM6 versions | |||
* Basic features | |||
** Pulse channels, triangle channel, noise channels | |||
** C0-B7 note range (96 notes) | |||
** Instruments with duty cycle, volume, pitch and arpeggio envelopes | |||
** Absolute and relative pitch envelopes | |||
** Looping sections in envelopes | |||
** Release points for volume envelopes | |||
** Ability to change the speed (FamiTracker tempo mode only) | |||
** Ability to loop over a portion of the song | |||
** Up to 64 instruments per export, an export can consist of as little as 1 song, or as many as 17 | |||
* Can enable/disable features to save ROM and RAM | |||
** VRC6, VRC7, FDS, Sunsoft 5B, Namco 163 support (only one at a time) | |||
** PAL/NTSC playback | |||
** DPCM | |||
** Sound effect support (configurable number of streams) | |||
** Blaarg Smooth Vibrato technique to eliminate "pops" on square channels (incompatible with SFX at the moment) | |||
** FamiTracker/FamiStudio tempo mode. | |||
** Volume track | |||
** Fine pitch track | |||
** Slide notes | |||
** Vibrato effect | |||
** Arpeggio effect (not arpeggio envelopes in instruments, which are always available) | |||
=== FamiTone2 === | === FamiTone2 === | ||
Line 43: | Line 71: | ||
* Adds volume column support | * Adds volume column support | ||
* Full note range | * Full note range | ||
* 1xx,2xx,3xx,4xx,Qxx,Rxx effects | * <code>1xx</code>,<code>2xx</code>,<code>3xx</code>,<code>4xx</code>,<code>Qxx</code>,<code>Rxx</code> effects | ||
* Duty cycle envelopes | * Duty cycle envelopes | ||
* Sound effects that are bigger than 256 bytes | * Sound effects that are bigger than 256 bytes | ||
Line 83: | Line 111: | ||
* "Attack track" mode, where the attack phase of a note on MMC5 channel 1 temporarily overrides the note on pulse channel 1. Useful for staccato ostinatos and occasionally 1-channel echo. | * "Attack track" mode, where the attack phase of a note on MMC5 channel 1 temporarily overrides the note on pulse channel 1. Useful for staccato ostinatos and occasionally 1-channel echo. | ||
* Automatic conversion doesn't use the newest features (linear portamento and 2-frame arpeggio) due to converter author's unfamiliarity with 0CC-FamiTracker. | * Automatic conversion doesn't use the newest features (linear portamento and 2-frame arpeggio) due to converter author's unfamiliarity with 0CC-FamiTracker. | ||
=== Lizard music engine === | |||
[http://forums.nesdev.org/viewtopic.php?f=2&t=18957&p=239567 Lizard music engine] by Rainwarrior | |||
Features (subset of Famitracker): | |||
* Volume column supported | |||
* No DPCM | |||
* No Hi-Pitch macros (but regular pitch works) | |||
* Tempo fixed at 150 (use Speed instead) | |||
* <code>Bxx</code> for looping | |||
* <code>D00</code> for variable pattern length | |||
* <code>F0x</code> for variable speed | |||
* No other effects supported | |||
* Sound effects on square 1 and/or noise channel | |||
Requirements: | |||
* 22 bytes ZP | |||
* 105 bytes other RAM | |||
* 2152 bytes of code and tables | |||
* ~1800 cycles per frame | |||
=== NSD.Lib === | |||
http://shaw.la.coocan.jp/nsdl/ | |||
Uses linear pitch. Defaults to an uncommon A=442 tuning, though Damian Yerrick has developed a [https://github.com/pinobatch/little-things-nes/tree/master/nsdl-tune tuning table generator] in Python. | |||
=== Penguin === | === Penguin === | ||
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* [https://forums.nesdev.org/viewtopic.php?p=205095#p205095 Allegedly] has most features of FamiTone2 | * [https://forums.nesdev.org/viewtopic.php?p=205095#p205095 Allegedly] has most features of FamiTone2 | ||
* No DPCM | * No DPCM | ||
* 12 bytes ZP | * 12 bytes ZP | ||
* 86 bytes other RAM | |||
* Music data not particularly size-optimized | * Music data not particularly size-optimized | ||
* Sound effects are expensive in terms of size | * Sound effects are expensive in terms of size | ||
=== OFGS === | === OFGS === | ||
http://offgao.net/ofgs/ | http://offgao.net/ofgs/ | ||
=== | === Sabre === | ||
[ | [https://github.com/CutterCross/Sabre https://github.com/CutterCross/Sabre] by CutterCross | ||
Features ( | Features: | ||
* | * CA65 and ASM6 versions | ||
* | * Note range: A0 - B6 | ||
* | * Note cuts | ||
* | * Speed and tempo | ||
* Bxx for | * DPCM for music (not for SFX) | ||
* D00 for variable pattern length | * All 5 2A03 channels supported for music | ||
* | * SFX can use up to 4 channels at once | ||
* | * Volume, arpeggio (absolute), pitch (relative) and duty envelopes supported for instruments | ||
* | * Loop points for all supported envelope types | ||
* <code>Bxx</code> for arbitrary loop points | |||
* <code>C00</code> for nonlooping tracks | |||
* <code>D00</code> for variable pattern length | |||
* <code>Fxx</code> for variable playback rate | |||
* <code>Zxx</code> for setting DMC line level ($4011) | |||
* 63 instruments (sharing 255 unique envelopes total) | |||
* 256 tracks | |||
* 256 SFX | |||
* 128 patterns per track | |||
* 1 pattern per SFX | |||
* NTSC, PAL, Dendy tempo & period adjustments | |||
* Linear counter trill for Triangle channel | |||
* Play / Pause / Stop Track routines | |||
* Mute / Unmute channel routines | |||
Requirements: | Requirements: | ||
* | * 42 bytes ZP | ||
* | * 121 bytes other RAM | ||
* | * 1749 bytes ROM | ||
Comparison to GGsound: | |||
* | * Unlike GGsound, letting instruments share envelopes saves ROM space | ||
* Song format doesn't lay down redundant note period data if the instrument or length changes | |||
* | * Sabre takes 1 byte to change the instrument instead of 2 | ||
* More common note lengths only take 1 byte to change | |||
* | * Loop/forward points should be in first channel, rather than all channels | ||
* | |||
* | |||
Revision as of 11:57, 25 September 2024
An audio driver or replayer is a program that runs on a game console to play music. An audio driver for NES reads music sequences and instrument definitions from the ROM and writes to the APU ports, usually once per frame.
Tracker replayers
NSFs exported from FamiTracker and 0CC-FamiTracker contain replayers that can handle all tracker features, but they use a lot of ROM and RAM space and can't handle sound effects.
- FamiTracker 0.4.2 replayer (0.4.6 is similar)
- No sound effect support
- Size: 245 bytes BSS, 20 bytes zero page, 5547 bytes ROM
- Famitracker j0cc fork
Game replayers
Replayers intended for use in games have limits on the instrument, effect, and expansion features they can use. Most can't handle expansions at all, as NES games in an unmodified NES cannot use expansion audio. They usually operate by translating a text export into assembly language data files that are included into the game's source code.
Famistudio music engine
Famistudio music engine by bleubleu
- Meant to go with its own music tool (Famistudio)
- NESASM, CA65, ASM6 versions
- Basic features
- Pulse channels, triangle channel, noise channels
- C0-B7 note range (96 notes)
- Instruments with duty cycle, volume, pitch and arpeggio envelopes
- Absolute and relative pitch envelopes
- Looping sections in envelopes
- Release points for volume envelopes
- Ability to change the speed (FamiTracker tempo mode only)
- Ability to loop over a portion of the song
- Up to 64 instruments per export, an export can consist of as little as 1 song, or as many as 17
- Can enable/disable features to save ROM and RAM
- VRC6, VRC7, FDS, Sunsoft 5B, Namco 163 support (only one at a time)
- PAL/NTSC playback
- DPCM
- Sound effect support (configurable number of streams)
- Blaarg Smooth Vibrato technique to eliminate "pops" on square channels (incompatible with SFX at the moment)
- FamiTracker/FamiStudio tempo mode.
- Volume track
- Fine pitch track
- Slide notes
- Vibrato effect
- Arpeggio effect (not arpeggio envelopes in instruments, which are always available)
FamiTone2
FamiTone2 by Shiru
- Notes limited to C-1 through D-6
- Instrument: volume, arpeggio, and pitch envelopes. Duty envelopes longer than 1 frame unsupported. Pitch limited to accumulated distance of 63 units in each direction. No release phase.
- No volume column
- Effects: tempo (
Fxx
), pattern cut (Dxx
), and loop (Bxx
) only - DPCM for instrument 0 only
- Limit of 64 instruments, 17 songs, and 16 KiB of DPCM
- Size: 186 bytes BSS, 3 bytes zero page, 1636 bytes ROM (source: README)
FamiTone 5.0
FamiTone 5.0 by dougeff
Modification of FamiTone2 that adds
- Adds volume column support
- Full note range
1xx
,2xx
,3xx
,4xx
,Qxx
,Rxx
effects- Duty cycle envelopes
- Sound effects that are bigger than 256 bytes
GGSound
GGSound by Gradual Games
- Full note range
- Instrument: volume, arpeggio, pitch, and duty envelopes, all looping
- Effects: tempo (
Fxx
) and loop (Bxx
, must be placed in all patterns) only - Size: 62 bytes zero page; 184 bytes in BSS; 3048 bytes ROM
- Compatible with NESASM3, ASM6, and ca65
Pently
Pently by Damian Yerrick
- Notes limited to A-0 through C-7; changeable at build time
- Instrument: volume, duty, and (absolute) arpeggio envelopes. Pitch envelopes unsupported. The volume envelope can't loop, and the duty and arpeggio envelopes stop at the end of the volume envelope. No release phase.
- Volume column limited to 4 levels
- Effects: vibrato (
45x
), portamento (3xx
), grace note (Sxx
andGxx
), legato (change note pitch without restarting envelope), arpeggio (0xy
) with 1- or 2-frame arpeggio scheme, tempo, and loop (Bxx
) - Vibrato and portamento use "linear pitch" model similar to that of 0CC-FamiTracker
- "Rows per minute" tempo model allows runtime correction for NTSC, PAL, and Dendy
- No DPCM
- Limit of 51 instruments, 25 drums, and 255 patterns
- Size: 32 bytes zero page, 112 bytes BSS, 1918 bytes ROM
- Some effects are space-intensive and can be disabled at build time through a configuration file to reduce ROM and RAM size. A feature set comparable to FamiTone2 uses 1283 bytes of ROM.
- Compatible with ca65. In 2019, an experimental ASM6 port was added. Python 3 is used to preprocess the score and generate the RAM map.
The native input format ("Pently score") is inspired by MML and intended to be familiar to users of PPMCK or LilyPond. Conversion from FT text export is through ft2pently by NovaSquirrel. As Pently score was originally intended for human writability, some features don't map well onto FamiTracker features, requiring manual configuration of ft2pently or manual editing of the Pently score it produces:
- Pattern start has row granularity, allowing a pattern such as a drum fill to replace the end of another pattern.
- Pattern length is not fixed, allowing long melodic patterns and short drum loops.
- Patterns are shared among channels. Use this with delayed pattern start for 2-channel echo.
- Patterns can be transposed. Use this for parallel fourths, fifths, or octaves, or for gear changes like that in the Mermaids of Atlantis soundtrack.
- Drum channel instead of noise channel. Drums are played as pairs of sound effects that interrupt a note played on the same channel, making Tim Follin-style triangle+noise drums somewhat easier than with the fixed arpeggio that one would use in FT.
- Envelope divided into an attack phase, similar to FT envelopes, and a decay phase with a constant duty and decreasing volume, similar to NerdTracker II envelopes.
- "Attack track" mode, where the attack phase of a note on MMC5 channel 1 temporarily overrides the note on pulse channel 1. Useful for staccato ostinatos and occasionally 1-channel echo.
- Automatic conversion doesn't use the newest features (linear portamento and 2-frame arpeggio) due to converter author's unfamiliarity with 0CC-FamiTracker.
Lizard music engine
Lizard music engine by Rainwarrior
Features (subset of Famitracker):
- Volume column supported
- No DPCM
- No Hi-Pitch macros (but regular pitch works)
- Tempo fixed at 150 (use Speed instead)
Bxx
for loopingD00
for variable pattern lengthF0x
for variable speed- No other effects supported
- Sound effects on square 1 and/or noise channel
Requirements:
- 22 bytes ZP
- 105 bytes other RAM
- 2152 bytes of code and tables
- ~1800 cycles per frame
NSD.Lib
http://shaw.la.coocan.jp/nsdl/
Uses linear pitch. Defaults to an uncommon A=442 tuning, though Damian Yerrick has developed a tuning table generator in Python.
Penguin
Penguin by pubby
- Constant cycle count of 790, allowing use in a raster effect
- Plays sound effects without using additional cycles
- Famitracker Exported
- Allegedly has most features of FamiTone2
- No DPCM
- 12 bytes ZP
- 86 bytes other RAM
- Music data not particularly size-optimized
- Sound effects are expensive in terms of size
OFGS
Sabre
https://github.com/CutterCross/Sabre by CutterCross
Features:
- CA65 and ASM6 versions
- Note range: A0 - B6
- Note cuts
- Speed and tempo
- DPCM for music (not for SFX)
- All 5 2A03 channels supported for music
- SFX can use up to 4 channels at once
- Volume, arpeggio (absolute), pitch (relative) and duty envelopes supported for instruments
- Loop points for all supported envelope types
Bxx
for arbitrary loop pointsC00
for nonlooping tracksD00
for variable pattern lengthFxx
for variable playback rateZxx
for setting DMC line level ($4011)- 63 instruments (sharing 255 unique envelopes total)
- 256 tracks
- 256 SFX
- 128 patterns per track
- 1 pattern per SFX
- NTSC, PAL, Dendy tempo & period adjustments
- Linear counter trill for Triangle channel
- Play / Pause / Stop Track routines
- Mute / Unmute channel routines
Requirements:
- 42 bytes ZP
- 121 bytes other RAM
- 1749 bytes ROM
Comparison to GGsound:
- Unlike GGsound, letting instruments share envelopes saves ROM space
- Song format doesn't lay down redundant note period data if the instrument or length changes
- Sabre takes 1 byte to change the instrument instead of 2
- More common note lengths only take 1 byte to change
- Loop/forward points should be in first channel, rather than all channels