awspolly: add compression and max-compression properties#1
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- compression (f64, default 1.0): when > 1.0, every cue is compressed to input_duration / compression, overriding max-overflow. Lets a caller actively shrink the per-cue duration target to claw back accumulated drift on languages where TTS is denser than source. - max-compression (f64, default 0.0 = unlimited): hard cap on the signalsmith_stretch factor. When the natural factor would exceed this cap, clamp it and let the output buffer play longer than the source span. Prevents chipmunk artifacts on outlier cues where the synthesized audio is much longer than its input duration budget. Both are mutable_playing so an external controller can tune them at runtime based on observed pipeline drift. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Both are mutable_playing so an external controller can tune them at runtime based on observed pipeline drift.