sync: Auto-sync from acg-guru-5070 at 2026-03-22 22:31:46

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Machine: acg-guru-5070
Timestamp: 2026-03-22 22:31:46

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

.claude/memory/project_audio_processor_architecture.md

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+---
+name: Audio Processor - Segment-First Architecture
+description: Revised pipeline architecture - detect breaks and split into segments BEFORE transcription for complete content capture
+type: project
+---
+
+## Revised Pipeline Architecture (decided 2026-03-22)
+
+Shows are almost always 4 segments per hour (8 total for a 2-hour show). Extra breaks are rare.
+
+**Old approach:** Transcribe full episode -> truncate to fit LLM context -> analyze (loses content)
+
+**New approach:** Detect breaks first (audio-only) -> split into ~8 segments -> transcribe each -> analyze each with full context -> cross-segment synthesis
+
+### Pipeline Order
+
+1. **Audio-level break detection** (no transcript needed) — loudness/compression jumps, silence gaps, known bumper fingerprints, HR1/HR2 boundary
+2. **Split into segments** — ~7-15 min each, complete audio chunks
+3. **Transcribe each segment** — smaller files, complete content, no truncation
+4. **Analyze each segment** — full transcript fits in LLM context window easily
+5. **Cross-segment synthesis** — detect topics spanning segments, callbacks ("going back to what we said before the break"), narrative arc
+6. **Generate content** — blog posts, forum posts, episode summary from complete analysis
+
+### Key Insights
+
+- 4 segments/hour is a strong structural prior for break detection — if 12-18 min into a segment and audio signatures appear, almost certainly a break. At 5 min, probably not.
+- Each segment transcript is ~5-10K chars — fits in any LLM context with room for detailed prompts
+- Cross-segment synthesis pass is new and essential for catching callbacks and recurring topics
+
+**Why:** Solves the context window truncation problem that loses show content. Each segment gets complete analysis.
+
+**How to apply:** This is the architecture direction for all future audio processor work. The existing Stage 3 segment detector needs to work without transcript input (audio-only signals). Stage 6 analyzer needs per-segment + synthesis passes.