Audio and SLink

SLink connects gameplay events, animation actions, and property changes to sounds. Its database is SLink2/SLink2DB.szs, which contains SLink2DB.bslnk. The audio assets themselves are stored in .bars archives under Sound/Resource, including its Stream subdirectory.

This catalog was extracted from Animal Crossing: New Horizons 3.0.0. It contains 20,799 audio asset entries in 1,696 BARS files, with 7,072 distinct sound names explicitly referenced by SLink.

How SLink selects audio

Like ELink, SLink organizes its database into users such as furniture, characters, and UI objects. A user has named asset call tables that can play a sound or select/combine child calls through containers. Calls can be requested by game code or activated through action, property, and always triggers.

A sound asset’s RuntimeAssetName identifies the audio resource to play. SLink also supplies playback settings such as volume, pitch, delay, fade-in time, sound group, and attachment bone. The BARS file contains the sound’s metadata and audio payload; .barslist resource lists refer to BARS archives.

See the xlink2 documentation for users, triggers, and call tables, and the BARS format documentation for the resource lookup tables.

Which ID is which?

Audio assets use a CRC32 hash of their name in the BARS lookup table. This table is sorted by hash; each entry points to an archive-local index. Every exported name was checked against its stored hash.

Identifier	Meaning
Runtime asset name	The sound resource name, such as UI_Point_Get.
Name hash (CRC32)	The 32-bit name hash stored in BARS, such as 0xC8556DD8.
BARS index	The zero-based position in that archive’s hash/offset tables. It is not a global sound ID.
Call-table key	The name a particular SLink user uses to select a call, such as In.
Call-table GUID	The identifier for a call table within that user, such as 0x18c6896d. It is separate from the sound’s CRC32 hash.

Use the name/hash and BARS file when locating an audio asset. Use the user and call-table key/GUID when investigating what triggers it. Archive indices may change when assets are added or removed.

Example: Nook Miles result dialog

This shortened entry comes from the UI_SonkatsuResultDialog user in the decoded SLink database:

In[0x18c6896d] {
  EmitCount = 1
  Oneshot = false
  NoPause = false
  UserFlags = 0b0
  Execute = Asset {
    AssetName = "In"
    RuntimeAssetName = "UI_Point_Get"
    GroupName = "UI_Default"
    Delay = 4.0
    Priority = 0.860000014
    BitFlag = 0b1101
    UIPanningEnable = false
  }
}

The In call selects UI_Point_Get. Its audio is in Sound/Resource/UI_SonkatsuResultDialog.bars at index 2, with name hash 0xC8556DD8. Changing RuntimeAssetName changes the selected sound; replacing the corresponding audio payload changes the recording itself.

Audio asset catalog

Search by sound name, hexadecimal hash, or BARS filename. All BARS paths below are relative to Sound/Resource/. Select a SLink calls count to see the users, call-table keys, and GUIDs that explicitly reference that sound. The count represents distinct user/key/GUID mappings, not how often a sound plays.

A count of 0 means there is no explicit nonblank RuntimeAssetName reference in this SLink export. It does not establish that the sound is unused: other playback paths and runtime name selection have not been exhaustively traced. @Blank is excluded because it is a placeholder rather than a sound asset.

Search sounds Referenced by SLink only

Loading search… Showing the first 50 of 20,799 entries.

Sound name	Name hash (CRC32)	BARS file	Index	SLink calls
$BGM_DJ	0x025F262D	Bgm_DJ.bars	0	713
$Ftr_Slide	0xD38D6360	Furniture_Base.bars	6	2397
$Melody_Humming_Key00	0x533C65F7	Npc.bars	58	90
$Melody_Humming_Key01	0x243B5561	Npc.bars	25	90
$Melody_Humming_Key02	0xBD3204DB	Npc.bars	131	90
$Melody_Humming_Key03	0xCA35344D	Npc.bars	139	90
$Melody_Humming_Key04	0x5451A1EE	Npc.bars	59	90
$Melody_Humming_Key05	0x23569178	Npc.bars	20	90
$Melody_Humming_Key06	0xBA5FC0C2	Npc.bars	128	90
$Melody_Humming_Key07	0xCD58F054	Npc.bars	144	90
$Melody_Humming_Key08	0x5DE7EDC5	Npc.bars	66	90
$Melody_Humming_Key09	0x2AE0DD53	Npc.bars	31	90
$Melody_Humming_Key10	0x4A2754B6	Npc.bars	53	90
$Melody_Humming_Key11	0x3D206420	Npc.bars	44	90
$Melody_Humming_Key12	0xA429359A	Npc.bars	110	90
$Melody_Humming_KeyRandom00	0xAF75E4D4	Npc.bars	117	90
$Melody_Humming_KeyRandom01	0xD872D442	Npc.bars	152	90
$Melody_Humming_KeyRandom02	0x417B85F8	Npc.bars	49	90
$Melody_Humming_KeyRandom03	0x367CB56E	Npc.bars	39	90
$Melody_Humming_KeyRandom04	0xA81820CD	Npc.bars	113	90
$Melody_Humming_KeyRandom05	0xDF1F105B	Npc.bars	155	90
$Melody_Npc_Key00	0xD7A4C25E	Npc.bars	151	45
$Melody_Npc_Key00_Steps	0x9045B631	Npc.bars	94	45
$Melody_Npc_Key01	0xA0A3F2C8	Npc.bars	107	45
$Melody_Npc_Key01_Steps	0x3632BD85	Npc.bars	38	45
$Melody_Npc_Key02	0x39AAA372	Npc.bars	43	45
$Melody_Npc_Key02_Steps	0x07DAA718	Npc.bars	6	45
$Melody_Npc_Key03	0x4EAD93E4	Npc.bars	54	45
$Melody_Npc_Key03_Steps	0xA1ADACAC	Npc.bars	108	45
$Melody_Npc_Key04	0xD0C90647	Npc.bars	148	45
$Melody_Npc_Key04_Steps	0x640A9222	Npc.bars	70	45
$Melody_Npc_Key05	0xA7CE36D1	Npc.bars	112	45
$Melody_Npc_Key05_Steps	0xC27D9996	Npc.bars	135	45
$Melody_Npc_Key06	0x3EC7676B	Npc.bars	45	45
$Melody_Npc_Key06_Steps	0xF395830B	Npc.bars	169	45
$Melody_Npc_Key07	0x49C057FD	Npc.bars	52	45
$Melody_Npc_Key07_Steps	0x55E288BF	Npc.bars	63	45
$Melody_Npc_Key08	0xD97F4A6C	Npc.bars	154	45
$Melody_Npc_Key08_Steps	0xA3AAF856	Npc.bars	109	45
$Melody_Npc_Key09	0xAE787AFA	Npc.bars	116	45
$Melody_Npc_Key09_Steps	0x05DDF3E2	Npc.bars	2	45
$Melody_Npc_Key10	0xCEBFF31F	Npc.bars	147	45
$Melody_Npc_Key10_Steps	0x5CEFB6AF	Npc.bars	65	45
$Melody_Npc_Key11	0xB9B8C389	Npc.bars	125	45
$Melody_Npc_Key11_Steps	0xFA98BD1B	Npc.bars	172	45
$Melody_Npc_Key12	0x20B19233	Npc.bars	17	45
$Melody_Npc_Key12_Steps	0xCB70A786	Npc.bars	142	45
$Melody_Npc_KeyRandom00	0xCDA99D63	Npc.bars	146	45
$Melody_Npc_KeyRandom00_Steps	0x71390423	Npc.bars	77	45
$Melody_Npc_KeyRandom01	0xBAAEADF5	Npc.bars	130	45

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Downloads

• Complete audio asset catalog (JSON): name, hash, BARS file, archive index, and SLink call count.
• SLink references (JSON): sound names mapped to [user, call-table key, GUID] entries, including all 90,326 distinct mappings.

These downloads contain identifiers and references only. Each BARS asset is listed separately, including assets whose names may appear in more than one archive.

Reading the SLink database

Unpack SLink2/SLink2DB.szs to obtain SLink2DB.bslnk, then use xlink2 with the Park game profile:

.\xlink.exe -i SLink2DB.bslnk -o SLink2DB.txt --game Park --output-type Text

Convert the edited text back to binary with:

.\xlink.exe -i SLink2DB.txt -o SLink2DB.bslnk --game Park --output-type Binary

Repack the resulting binary into SLink2DB.szs for the game to load it.