SMR.szs

This page is in progress and may contain incomplete information or editor's notes.

SMR.szs is a compressed BAA file (Binary Audio Archive) which defines the game's sound system. It contains references to streamed and sequenced music files as well as data for sound effects and instruments. It can be found in various JAudio games, however the specifications below mainly apply to Super Mario Galaxy and Super Mario Galaxy 2.

The following files are directly linked to SMR.szs:

• AudioRes/Info/BgmParam.arc (SMG2 only, overrides the BGM and STM volume parameter)
• AudioRes/Info/JaiChord.arc (SMR.szs links BGM labels to CIT file IDs within this archive)
• AudioRes/Seqs/JaiSeq.arc (SMR.szs links BGM labels to BMS file IDs within this archive)
• AudioRes/Stream/*.ast (SMR.szs links STM labels to AST files)
• AudioRes/Waves/*.aw (SMR.szs defines the contents of AW files)

The following files are indirectly linked to SMR.szs:

• AudioRes/Info/ActionSound.arc (SMG2 only, links hardcoded triggers for all objects to sound effects in SMR.szs)
• AudioRes/Info/JaiMe.arc (References instruments from SMR.szs)
• AudioRes/Info/JaiRemixSeq.arc (References instruments from SMR.szs)
• AudioRes/Info/MultiBgmInfo.arc (SMG2 only, connects MBGM labels to STM and BGM labels, allowing streamed and sequenced audio to play simultaneously)
• AudioRes/Info/SoundIdToInstList (SMG2 only, references Sound IDs and instruments from SMR.szs and allows loading AW files)
• AudioRes/Info/StageBgmInfo.arc (SMG2 only, controls the main music and music changes for all stages)
  
  

Header

The header contains offsets to all files included in SMR.szs:

Offset	Type	Description
0x00	Magic (0x4)	AA_< (0x41415F3C)
0x04	Magic (0x4)	bst (0x62737420)
0x08	UInt32 (0x4)	Offset to BST section start
0x0C	UInt32 (0x4)	Offset to BST section end
0x10	Magic (0x4)	bstn (0x6273746E)
0x14	UInt32 (0x4)	Offset to BSTN section start
0x18	UInt32 (0x4)	Offset to BSTN section end
0x1C	Magic (0x4)	bsc (0x62736320)
0x20	UInt32 (0x4)	Offset to SC section start
0x24	UInt32 (0x4)	Offset to SC section end
0x28 + N * 0x10	Magic (0x4)	ws (0x77732020)
0x28 + N * 0x10 + 0x4	UInt32 (0x4)	WSYS file ID (N)
0x28 + N * 0x10 + 0x8	UInt32 (0x4)	Offset to WSYS file
0x28 + N * 0x10 + 0xC	UInt32 (0x4)	Unknown (mostly 0x00000000, once seen as 0xFFFFFFFF)
0x38 + N * 0x10 + M * 0xC	Magic (0x4)	bnk (0x626E6B20)
0x38 + N * 0x10 + M * 0xC + 0x4	UInt32 (0x4)	IBNK file ID (M)
0x38 + N * 0x10 + M * 0xC + 0x8	UInt32 (0x4)	Offset to IBNK file
0x44 + N * 0x10 + M * 0xC	Magic (0x4)	>_AA (0x3E5F4141)

BST

The Binary Sound Table contains parameters for all music and sound effects

BST Header

size: 0x20

Offset	Type	Description
0x00	Magic (0x4)	BST (0x42535420)
?	?
0x08	UInt8 (0x1) ?	Unknown. 0x01 in SMG and SMG2
?	?
0x0C	UInt32 (0x4)	Offset to BST main table
0x10	Padding (0x10)

BST main table

size: (N + 1) * 0x4

Offset	Type	Description
0x00	UInt32 (0x4)	Amount N of entries (3 in SMG and SMG2)
0x04	UInt32 (0x4)	Offset to SE table
0x08	UInt32 (0x4)	Offset to BGM table
0x0C	UInt32 (0x4)	Offset to STREAM table

SE table

size: (N + 1) * 0x4

Offset	Type	Description
0x00	UInt32 (0x4)	Amount N of entries (0xE in SMG and SMG2)
0x04	UInt32 (0x4)	Offset to SYSTEM table
0x08	UInt32 (0x4)	Offset to PLAYER_VOICE table
0x0C	UInt32 (0x4)	Offset to PLAYER_MOTION table
0x10	UInt32 (0x4)	Offset to BOSS_VOICE table
0x14	UInt32 (0x4)	Offset to BOSS_MOTION table
0x18	UInt32 (0x4)	Offset to OBJECT table
0x1C	UInt32 (0x4)	Offset to ATMOSPHERE table
0x20	UInt32 (0x4)	Offset to DEMO table
0x24	UInt32 (0x4)	Offset to ENEMY_VOICE table
0x28	UInt32 (0x4)	Offset to ENEMY_MOTION table
0x2C	UInt32 (0x4)	Offset to SUPPORTER_VOICE table
0x30	UInt32 (0x4)	Offset to SUPPORTER_MOTION table
0x34	UInt32 (0x4)	Offset to REMIX_SEQ table
0x38	UInt32 (0x4)	Offset to HOME_BUTTON_MENU table

Each of the referenced tables are defined identically, see SE parameter table.

BGM table

size: (N + 1) * 0x4

Offset	Type	Description
0x00	UInt32 (0x4)	Amount N of entries (2 in SMG and SMG2)
0x04	UInt32 (0x4)	Offset to MAIN_BGM table
0x08	UInt32 (0x4)	Offset to MULTI_BGM table

Each of the referenced tables are defined identically, see BGM parameter table.

STREAM table

size: (N + 1) * 0x4

Offset	Type	Description
0x00	UInt32 (0x4)	Amount N of entries (1 in SMG and SMG2)
0x04	UInt32 (0x4)	Offset to STREAM parameter table

SE parameter table

size: (N + 2) * 0x4

Offset	Type	Description
0x0	UInt32 (0x4)	Amount N of entries
0x4	UInt32 (0x4)	Padding?
0x8 + N * 0x4	UInt8 (0x1)	Unknown. Always 0x50
0x9 + N * 0x4	UInt24 (0x3)	Offset to SE parameters

SE parameters

size: 0x6 for each entry

Offset	Type	Description
0x0	UInt8 (0x1)	Volume?
0x1	UInt8 (0x1)	Unknown
0x2	UInt8 (0x1)	Unknown
0x3	UInt8 (0x1)	Unknown
0x4	UInt8 (0x1)	Unknown
0x5	UInt8 (0x1)	Unknown

BGM parameter table

size: (N + 2) * 0x4

Offset	Type	Description
0x0	UInt32 (0x4)	Amount N of entries
0x4	UInt32 (0x4)	Padding?
0x8 + N * 0x4	UInt8 (0x1)	Unknown. Always 0x60
0x9 + N * 0x4	UInt24 (0x3)	Offset to BGM parameters

BGM parameters

size: 0x8 for each entry

Offset	Type	Description for MAIN_BGM	Description for MULTI_BGM
0x0	UInt8 (0x1)	Unknown. Always 0x70	Unknown. Always 0x70
0x1	UInt8 (0x1)	Volume. Overridden by BgmParam in SMG2.	Unknown. Always 0x78
0x2	UInt16 (0x2)	JaiSeq.arc file ID. Must always be valid.	Unknown. Always 0x0000
0x4	UInt16 (0x2)	JaiChord.arc file ID. 0xFFFF if no JaiChord file is set.	Unknown. Always 0xFFFF
0x6	UInt16 (0x2)	Unknown. Seen as 0x0000 and 0x0001.	Unknown. Always 0x0000

STREAM parameter table

size: (N + 2) * 0x4

Offset	Type	Description
0x0	UInt32 (0x4)	Amount N of entries
0x4	UInt32 (0x4)	Padding?
0x8 + N * 0x4	UInt8 (0x1)	Unknown. Always 0x70
0x9 + N * 0x4	UInt24 (0x3)	Offset to STREAM parameters

STREAM parameters

size: 0x8 for each entry

Offset	Type	Description
0x0	UInt8 (0x1)	Unknown. Always 0x80
0x1	UInt8 (0x1)	Volume. Overridden by BgmParam in SMG2.
0x2	UInt16 (0x2)	Channel count. 0x000E for 2 channels, 0x00EE for 4 channels
0x4	UInt32 (0x4)	Offset to null-terminated AST filename, relative to the root of the ISO. Example: /AudioRes/Stream/smg2_ev_starchance_strm.ast

The rest of the BST section is padded to the nearest 0x20.

BST

The Binary Sound Table Names section contains labels for all music and sound effects

BSTN Header

size: 0x20

Offset	Type	Description
0x00	Magic (0x4)	BSTN (0x4253544E)
?	?
0x08	UInt8 (0x1) ?	Unknown. 0x01 in SMG and SMG2
?	?
0x0C	UInt32 (0x4)	Offset to BSTN main table
0x10	Padding (0x10)

BSTN main table

size: (N + 1) * 0x4

Offset	Type	Description
0x00	UInt32 (0x4)	Amount N of entries (3 in SMG and SMG2)
0x04	UInt32 (0x4)	Offset to SE names table
0x08	UInt32 (0x4)	Offset to BGM names table
0x0C	UInt32 (0x4)	Offset to STREAM names table

SE names table

size: (N + 2) * 0x4

Offset	Type	Description
0x00	UInt32 (0x4)	Amount N of entries (0xE in SMG and SMG2)
0x04	UInt32 (0x4)	Offset to null-terminated global Sound Effect name. Points to SE in SMG and SMG2
0x08	UInt32 (0x4)	Offset to SYSTEM names table
0x0C	UInt32 (0x4)	Offset to PLAYER_VOICE names table
0x10	UInt32 (0x4)	Offset to PLAYER_MOTION names table
0x14	UInt32 (0x4)	Offset to BOSS_VOICE names table
0x18	UInt32 (0x4)	Offset to BOSS_MOTION names table
0x1C	UInt32 (0x4)	Offset to OBJECT names table
0x20	UInt32 (0x4)	Offset to ATMOSPHERE names table
0x24	UInt32 (0x4)	Offset to DEMO names table
0x28	UInt32 (0x4)	Offset to ENEMY_VOICE names table
0x2C	UInt32 (0x4)	Offset to ENEMY_MOTION names table
0x30	UInt32 (0x4)	Offset to SUPPORTER_VOICE names table
0x34	UInt32 (0x4)	Offset to SUPPORTER_MOTION names table
0x38	UInt32 (0x4)	Offset to REMIX_SEQ names table
0x3C	UInt32 (0x4)	Offset to HOME_BUTTON_MENU names table

Each of the referenced tables are defined identically, see SE name offset table.

BGM names table

size: (N + 2) * 0x4

Offset	Type	Description
0x00	UInt32 (0x4)	Amount N of entries (2 in SMG and SMG2)
0x04	UInt32 (0x4)	Offset to null-terminated global Background Music name. Points to BGM in SMG and SMG2
0x08	UInt32 (0x4)	Offset to MAIN_BGM names table
0x0C	UInt32 (0x4)	Offset to MULTI_BGM names table

Each of the referenced tables are defined identically, see BGM name offset table.

STREAM names table

size: (N + 2) * 0x4

Offset	Type	Description
0x00	UInt32 (0x4)	Amount N of entries (1 in SMG and SMG2)
0x04	UInt32 (0x4)	Offset to null-terminated global Stream Music name. Points to STREAM in SMG and SMG2
0x08	UInt32 (0x4)	Offset to STREAM name offset table

SE name offset table

size: (N + 2) * 0x4

Offset	Type	Description
0x0	UInt32 (0x4)	Amount N of entries
0x4	UInt32 (0x4)	Offset to null-terminated Sound Effect category name. Examples: SYSTEM, PLAYER_VOICE etc.
0x8 + N * 0x4	UInt32 (0x4)	Offset to null-terminated Sound Effect name. Examples: SE_SY_COIN, SE_PV_JUMP_S etc.

BGM name offset table

size: (N + 2) * 0x4

Offset	Type	Description
0x0	UInt32 (0x4)	Amount N of entries
0x4	UInt32 (0x4)	Offset to null-terminated Background Music category name, like MAIN_BGM or MULTI_BGM.
0x8 + N * 0x4	UInt32 (0x4)	Offset to null-terminated Background Music name. Examples: BGM_MISS, MBGM_STAR_CHANCE etc.

STREAM name offset table

size: (N + 2) * 0x4

Offset	Type	Description
0x0	UInt32 (0x4)	Amount N of entries
0x4	UInt32 (0x4)	Offset to null-terminated Stream Music category name. Simply 0 in SMG and SMG2
0x8 + N * 0x4	UInt32 (0x4)	Offset to null-terminated Stream Music name. Examples: STM_STAR_CHANCE, STM_SMG_GALAXY_01 etc.

The rest of the BSTN section is padded to the nearest 0x20.

Editing SMR.szs

The following section contains instructions for editing SMR.szs with the SoundModdingToolkit. They do not contain specifications for the file itself.

The tool SoundModdingToolkit can convert this file into a clear and readable file structure, so the structure of the file is shown on this page using the tool's converted structure.

Please note that only version 4.1.0 can edit the lists without any problems. Later versions can lead to problems such as muted songs.

BGM

MAIN_BGM

Found in SoundTable/BGM/libraries/MAIN_BGM.json
Defines the sequenced music. The music sequence files can be found in bms format in AudioRes/Seqs/JaiSeq.arc.

Name	Description
unk1
unk2	Volume (overridden by BgmParam in SMG2)
unk3	File ID of the bms file in JaiSeq.arc to use (the filename is ignored)
unk4	File ID of the cit file in JaiChord.arc to use (the filename is ignored)
unk5
type
mOffset
NameOffset
name	Internal mapping name for this sequence (e.g. "BGM_MISS"). This name can then be used in musiclists like ScenarioBgmInfo.

MULTI_BGM

Found in SoundTable/BGM/libraries/MULTI_BGM.json
Defines settings about Multi BGM such as its name. Multi BGM combines Stream (STM) and sequential Music (BGM). Which Music is set for each Multi BGM is defined in MultiBgmInfo.

Name	Description
unk1	? always 112
unk2	? always 120
unk3	? always 0
unk4	? always -1
unk5	? always 0
type	? always 96
mOffset
NameOffset	? always 0
name	Internal mapping name for this entry (e.g. "MBGM_STAR_CHANCE") This name can then be used in musiclists like ScenarioBgmInfo.

STREAM

Found in SoundTable/STREAM/0.json
Defines the streamed ast audio files including its internal STM name as well as its filepath.

Name	Description
unk1	? always 128
unk2	Volume (overridden by BgmParam in SMG2)
streamType	Stream Type 14: Standard Stream (2 Channels) 238: Multi Stream (4 Channels)
streamPath	Filepath of the AST file to use (e.g. "/AudioRes/Stream/smg2_ev_starchance_strm.ast")
type	? always 112
mOffset
NameOffset	? always 0
name	Internal mapping name for this song (e.g. "STM_STAR_CHANCE") This name can then be used in musiclists like ScenarioBgmInfo.

SE

AW

Each aw. file is converted by the tool into a folder that has the ID of the aw file in its name, and besides the sound files converted in wav format, contains the following settings for each sound:

• manifest.json Contains the ID and name of the aw file
• wavetable.json Contains settings for each sound of the aw. file

wavetable

Each entry starts with the name of the Wav file (e.g. "31") followed by its settings:

Name	Description
format	? always 0
key
sampleRate	The sample rate at which the sound should be played. (e.g. "22050.0")
sampleCount	Length of the sound in samples
loop	Whether it should be looped or not true: loop false: do not loop
loop_start	Loop Start position in samples.
loop_end	Loop End position in samples.
last
penult

Libraries

In SoundTable\SE\libraries\ there are several libraries which contain settings for sounds with their internal assigned names.

Name	Description
unk1	? always 128
unk2
unk3
unk4
unk5
unk6
type	Always 80
mOffset
NameOffset	? Always 0
name	Internal Name of the soundeffect (e.g. "SE_SV_LV_YOSHI_FLUTTER")