diff options
| author | skal <pascal.massimino@gmail.com> | 2026-03-05 10:03:32 +0100 |
|---|---|---|
| committer | skal <pascal.massimino@gmail.com> | 2026-03-05 10:03:32 +0100 |
| commit | e2c3c3e95b6a9e53b4631b271640bb9914f8c95e (patch) | |
| tree | a0e52468bdfe53bf896d8a86fc5b147ac8afe5f3 /PROJECT_CONTEXT.md | |
| parent | f48562060413634b13706c3ffd01180da98b6049 (diff) | |
fix(audio): OLA encoder never ran; version never propagated to decoder
Two bugs kept the v2 OLA path permanently disabled:
1. SpectrogramResourceManager::load_asset() never set spec.version from
SpecHeader::version — all .spec assets loaded with version=0, so
ola_mode was always false in the voice.
2. spectool analyze_audio() used non-overlapping chunks (stride=DCT_SIZE),
hamming_window_512, and hardcoded header.version=1 — OLA analysis was
never implemented in the encoder.
Fixes: propagate header->version in load_asset(); switch spectool to
OLA_HOP_SIZE stride, hann_window_512, and SPEC_VERSION_V2_OLA.
Regenerated all .spec files.
handoff(Gemini): OLA enc/dec chain now correct end-to-end. .spec files
are v2 (50% overlap, Hann). No API changes; 33/34 tests pass
(WavDumpBackendTest pre-existing failure unrelated).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Diffstat (limited to 'PROJECT_CONTEXT.md')
| -rw-r--r-- | PROJECT_CONTEXT.md | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/PROJECT_CONTEXT.md b/PROJECT_CONTEXT.md index 29395e7..d9e37e8 100644 --- a/PROJECT_CONTEXT.md +++ b/PROJECT_CONTEXT.md @@ -33,7 +33,7 @@ - **Timing System:** **Beat-based timelines** for musical synchronization. Sequences defined in beats, converted to seconds at runtime. Effects receive both physical time (constant) and beat time (musical). Variable tempo affects audio only. See `doc/BEAT_TIMING.md`. - **Workspace system:** Multi-workspace support. Easy switching with `-DDEMO_WORKSPACE=<name>`. Organized structure: `music/`, `weights/`, `obj/`, `shaders/`. Shared common shaders in `src/shaders/`. See `doc/WORKSPACE_SYSTEM.md`. -- **Audio:** Sample-accurate sync. Zero heap allocations per frame. Variable tempo. OLA-IDCT synthesis (v2 .spec): Hann window, 50% overlap, click-free. V1 (raw DCT-512) preserved for compatibility. MP3→spec encoder updated to match. Existing .spec files need regen to activate v2. +- **Audio:** Sample-accurate sync. Zero heap allocations per frame. Variable tempo. OLA-IDCT synthesis (v2 .spec): Hann window, 50% overlap, click-free. V1 (raw DCT-512) preserved for generated notes. .spec files regenerated as v2. - **Shaders:** Parameterized effects (UniformHelper, .seq syntax). Beat-synchronized animation support (`beat_time`, `beat_phase`). Modular WGSL composition with ShaderComposer. 24 shared common shaders (math, render, compute). - **3D:** Hybrid SDF/rasterization with BVH. Binary scene loader. Blender pipeline. - **Effects:** CNN post-processing: CNNEffect (v1) and CNNv2Effect operational. CNN v2: sigmoid activation, storage buffer weights (~3.2 KB), 7D static features, dynamic layers. Training stable, convergence validated. @@ -46,7 +46,7 @@ ## Next Up -**Active:** Spectral Brush Editor (procedural compression), CNN v2 quantization, .spec v2 regen (OLA) +**Active:** Spectral Brush Editor (procedural compression), CNN v2 quantization **Ongoing:** Test infrastructure maintenance (34/34 passing) **Future:** Size optimization (64k target), 3D enhancements |