Audio

Audio files

These are all found under /audio. This does not include /streams.

• midi.wad
• starfox.h.bak - old list of SFX IDs (don't match final)
• starfoxm.poo, starfoxs.poo - pool file
• starfoxm.pro, starfoxs.pro - project file
• starfoxm.sam, starfoxs.sam - sample file (the actual audio data)
• starfoxm.sdi, starfoxs.sdi - sample directory

Presumably m=music, s=sfx

https://github.com/axiodl/amuse is able to parse the audio data. Of course, it does not build, and has some utterly insane dependencies (why the shit does an audio decoder want a 3D graphics library!?)

• .proj: project structure, what belongs to which group
• .pool: all data except samples
• .sdir: locations of samples needed by groups
• .samp: sample data

/audio/data:

• EmptyN .bin 256K where N is 0..7
• Music .bin 2.5K
• Sfx .bin 38K
• Streams.bin 20K

Sound effects

XXX where is this struct used?

Offset	Type	Name	Description
000000	ushort	id	used to look up entry
000002	ushort	?	flags? if FFFF, don't play
000004	byte	?
000005	byte	?
000006	byte	?
000007	byte	?
000008	u32	offset	high byte: index into something 8 bytes; low 3 bytes: offset
00000c	u16	rate	higher = lower pitch
00000e	u16	pitch	higher = higher pitch - #samples?
000010	int	length	high byte = flags?
000014	u32	repeatStart	repeat from this point...
000018	u32	repeatEnd	...to this one (if this isn't 0)
00001c	u32	variation	distorts in various random ways

SFX.bin entry

Offset	Type	Name	Description
000000	u16	id
000002	u8	baseVolume
000003	u8	volumeRand	volume = rand(baseVolume - volumeRand, baseVolume + volumeRand)
000004	u8	basePan	127=center
000005	u8	panRand	never used, works same as volumeRand
000006	u16	?
000008	u16	range	how far from source object to silence
00000a	u16[6]	fxIds	actual sound to play (not same as id) (XXX are these the IDs in starfox.h.bak?)
000016	u8[6]	fxChance	chance to pick each sound
00001c	ushort	randMax	sum of fxChance
00001e	u8	?	maybe queue slot? high 4bits are idx into sfxTable_803db248
00001f	u8	idxs	two 4-bit values: numIdxs (# items in fxIds), prevIdx (previously played index)

Pseudocode to play a sound effect:

if id == 0xAB:
    //no idea what this is, just some kind of whoosh or creak.
    //it alternates between two different sounds every time it's played.
    //this check seems unnecessary though since the normal random
    //selection avoids repeats and so would have the same effect.
    entry->prevIdx ^= 1
    idx = entry->prevIdx
else:
    n = random between 1 and entry->randMax
    idx = the index of value n in entry->fxIds
        //eg if randVals = [10, 20, 30] and n = 22,
        //then idx = 2, since randVals[2] >= n

    //avoid playing the same sound twice in a row.
    //if we chose the same one as last time, use the next one.
    if entry->prevIdx == idx:
        idx += 1
        if idx > entry->numIdxs: idx = 0

entry->prevIdx = idx
outId = entry->randVals[idx]
if outId is 0, don't play

//compute the volume:
	if entry->volumeRand == 0:
		outVolume = entry->baseVolume
	else: outVolume = rand(
		entry->baseVolume - entry->volumeRand,
		entry->baseVolume + entry->volumeRand)

    //same calculation here, but result is cast to float.
    //panRand is 0 in every sound effect though
	if entry->panRand == 0:
		outPan = (float)entry->basePan
	else: outPan = rand(
		entry->basePan - entry->panRand,
		entry->basePan + entry->panRand)

u8 sfxTable_803db248[8] = {0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0};

outField6  = (float)unk06
outRange   = (float)range
outTable1E = sfxTable_803db248[unk1E >> 4]
out1ELow   = unk1E & 1
out1EHigh  = (unk1E >> 3) & 1

Sound Effect IDs

(names made up by me)

ID	Name
001D	FoxClimbUp
001F	KrystalHurt
0024	FoxHurt
0025	FoxClimbUp2
0026	FoxFallScream
0027	FoxLandOof
0029	FoxGrabLedge
002E	FoxRoll
002F	ClimbOutOfWater
0049	RecoverHealth
0058	GenericItemPickup
0069	ToggleDisguise
006F	Clang
0098	MenuOpen
009E	ElectricCrackle
00BA	SplashBA
00C0	StaffTakeOut
00C1	StaffPutAway
00C2	SmackC2
00C3	SmackC3
00E7	RobotTalk
00E8	RobotHover
00E9	RobotZap
00F3	PipF3
00F4	DootF4
00F5	MenuOpenF5
00F7	CMenuEquip
00FB	Ding
00FC	TitleScreenZip
00FD	Squak
00FF	TitleScreenOpenMenu
0100	TitleScreenCloseMenu
010A	SpellCastFailed
013D	TrickyDigging
016C	BallBounce
017B	Thud17B
017C	Thud17C
020E	FoxFallScream1
020F	FoxFallScream2
0285	Drip
0286	CameraTurnBehindPlayer
0287	Drop
0288	Whoosh288
0289	Whoosh289
028B	Whoosh28B
028C	TickTickTick
028D	CymbalCrash
029D	TrickyFinishFlame
02CB	KrystalGrabLedge
02D0	KrystalFallScream
034D	Tricky_WaitUpFox
034E	Tricky_WaitForMe
034F	Tricky_Hey
0350	Tricky_GetOff
0351	Tricky_LookAtThis
0352	Tricky_ImHungry
0353	Tricky_Yawn2
0354	Tricky_Yawn
0355	Tricky_LetsPlay
0356	Tricky_Cool
0357	Tricky_Sniff
0358	Tricky_BadGuy
0359	Tricky_Food
035A	Tricky_TheresSomethingNear
035B	Tricky_GetMFox
035C	Tricky_Yeah
035D	Tricky_ImNotDoingIt
035E	Tricky_Hello
035F	Tricky_HiFella
0360	Tricky_Dumdedum
0361	Tricky_Laugh
0362	Trick_Chewing
0363	Tricky_MmmmTasty
0364	Tricky_ImStuffed
0365	Tricky_WhereAreWeGoing
0378	FoxAttack378
037B	TitleScreenChangePage
037C	CMenuClose
0382	IceSpell
038D	WarningBeep
0394	Burning
0395	PutOutFlame
0397	TextPip
0398	KrystalClimbUp
0399	KrystalLandOof
03CD	KrystalRoll1
03CE	KrystalRoll2
03D8	StaticyRadarBeep
03DC	TrickySpewingFire
03E5	PauseMenuOpen
03E8	HagabonWhir
03EB	ElectronicChime3EB
03EC	ElectronicChime3EC
03ED	MapChangeMode
03EE	MenuOpen3EE
03EF	MenuClose3EF
03F0	MapZoom
03F1	Pip3F1
03F2	PauseMenuClose
03F4	RobotActivate
03F7	TrickyCommandDecoy
03F8	TrickyCommandFind
03F9	TrickyCommandFlame
03FA	TrickyCommandGoGetIt
03FB	TrickyCommandWhistle
03FC	TrickyCommandStay
03FF	ZipUp
0400	ZipDown
0401	MenuSlide
0402	Chime
0405	Blip
0408	CMenuOpen
0418	TitleScreenSelect
0419	TitleScreenCancel
041A	TitleScreenBeep
041B	ZipUp41B
041C	Zap
0420	WarpIn
0427	RollInWater
042B	Splash42B
0467	Warping
0470	EvilLaugh
0471	Woosh471
0472	Woosh472
047B	GlassSmash
04A2	Teleport