Lesson 226: Wwise DSP Packaged Windows Steam Build Receipt (2026)

Direct answer: Packaged Windows Steam builds that crash or stay silent on AK::SoundEngine::Init usually shipped without Wwise DSP binaries in Plugins/Wwise/.../x64. File wwise_dsp_packaged_receipt_v1.json with D1–D6 gates—DSP folder inventory, Init log, one posted event boot probe—then promote wwise_dsp_packaged on BUILD_RECEIPT. Distinct from Lesson 203 FMOD WebGL snapshots and Lesson 228 (queued).

Why this matters now (January 2027 Windows fest depots)

January 2027 teams finish Ren'Py PO-hash rows then push Steam Windows depots from CI. Editor play works because Wwise loads DSP from the local SDK; packaged builds omit AkMotion.dll, AkConvolutionReverb.dll, or platform-specific effects—Init fails on player PCs with no Wwise install. Discord logs show AK::SoundEngine::Init failed while soundbanks are present.

Guide Wwise DSP plugin path preflight is the ninety-second init path checklist; Lesson 237 wires wwise_dsp_init_receipt_v1 for the Q3 playtest wave (cousin schema, not duplicate of this lesson’s wwise_dsp_packaged_receipt_v1); 20-free Wwise/FMOD alternatives and Wwise learning resources are prep—this lesson is the BUILD_RECEIPT milestone.

Beginner path (DSP copy + boot probe)

Time: ~30 min first DSP audit + 15 min Steam install smoke—70 minutes with CI wiring.

Developer path (gates D1–D6)

D2 — Plugins/Wwise x64 inventory (copy checklist)

After Wwise Generate SoundBanks for Windows:

Archive release-evidence/audio/wwise_dsp_inventory.txt:

AkCompressor.dll OK
AkConvolutionReverb.dll OK
AkMotion.dll OK
...

Fail closed when any effect used in Wwise authoring is missing from packaged tree.

D4 — Init log probe

Enable Wwise logging in packaged build (AkMonitoringCallback or default log file path per integration). Pass when log contains successful init without AK_Fail.

Common packaged failure strings:

• Plugin not found — D2 inventory incomplete
• Bank not found — D3 path wrong
• Unsupported platform — ARM64 DSP copied instead of x64

wwise_dsp_packaged_receipt_v1.json

{
  "schema": "wwise_dsp_packaged_receipt_v1",
  "build_label": "steam-win-2027-01-14-rc1",
  "wwise_version": "2024.1.x",
  "integration": "Wwise Unity Integration 2024.1.y",
  "platform": "Windows_x64",
  "dsp_inventory_sha256": "sha256:REPLACE",
  "soundbank_manifest": "GeneratedSoundBanks/Windows/SoundbanksInfo.json",
  "ak_init_pass": true,
  "boot_event_posted": "Play_UI_Logo_Sting",
  "boot_event_audible": true,
  "paired_receipts": {
    "localization_matrix": "release-evidence/localization/LOCALIZATION_RECEIPT_MATRIX.json"
  },
  "gates": {
    "D1_version_pin": "pass",
    "D2_dsp_inventory": "pass",
    "D3_banks_packaged": "pass",
    "D4_ak_init": "pass",
    "D5_boot_event": "pass",
    "D6_build_receipt": "pass"
  },
  "fest_promotion_allowed": true
}

Pin under release-evidence/audio/WWISE_DSP_PACKAGED_RECEIPT.json.

BUILD_RECEIPT row (D6)

ALTER TABLE release_publish_gate ADD COLUMN IF NOT EXISTS
  wwise_dsp_packaged_blocked BOOLEAN NOT NULL DEFAULT false;

CI verify_wwise_dsp_packaged_v1 fails when ak_init_pass is false or dsp_inventory_sha256 missing for build_label.

Middleware separation (anti-pattern)

Key takeaways

1. Editor audio ≠ packaged audio—prove Init on installed Steam build.
2. DSP DLLs are not optional for effects used in Wwise project.
3. x64 Windows depot—not Win32, not ARM, unless SKU explicitly ships ARM.
4. One boot event audible proves banks + DSP—not only Init return code.
5. Lesson 203 is HTML5 FMOD—different receipt schema.
6. Guide #16 preflight mirrors D2 copy checklist when published.
7. Q1 capstone 229 wires 226 with 224–225, 227–228.
8. Thursday BUILD_RECEIPT review should show wwise_dsp_packaged for Wwise SKUs.

Common mistakes

• Copying DSP from SDK Debug profile into Shipping package inconsistently.
• .gitignore excluding Plugins/Wwise—CI package empty.
• Init pass on dev PC with Wwise installed—player VM without SDK fails.
• Shipping Master banks but Init uses wrong basePath.
• Filing receipt from PIE—Steam depot never tested.

Troubleshooting

Mini exercise (70 minutes)

1. Remove one DSP DLL intentionally; confirm D4 fails on packaged build.
2. Restore inventory; regenerate banks; pass Init on clean VM.
3. Post boot event; archive log + receipt JSON.
4. Add BUILD_RECEIPT row; link from Lesson 209 matrix if multi-SKU portfolio.
5. Document audio_middleware: wwise beside Ren'Py row in matrix notes.

Continuity — Q1 2027 post-fest recovery (224–229)

Previous: Lesson 225 — Ren'Py PO-hash language
Next: Lesson 227 — Steam review-key press demo scope.

FAQ

Same as FMOD bank strip?
No—FMOD missing banks is Addressables strip; Wwise failure here is DSP DLL packaging.

Do I need Wwise on the player machine?
No—DSP plugins ship inside the game; Init must succeed without Audiokinetic tools installed.

Unreal vs Unity paths?
Receipt schema is the same; dsp_inventory paths differ—document engine in integration field.

AK::SoundEngine::Init failing on Steam while the editor plays fine is almost always missing DSP in the depot—inventory, Init log, one audible event, then BUILD_RECEIPT.