Method
Audio silence
Per-channel silence intervals
What we measure and how
Per-channel silence detection finds intervals where the channel's amplitude stays below the noise floor for long enough to count as a real silent passage rather than a brief gap between phrases or a low-level breath. By default the noise floor is -70 dBFS and the minimum interval is 0.5 s; intervals shorter than that are ignored. An interval longer than the maximum allowed continuous silence (default 2 s) is an error; shorter sustained intervals are a warning. When the delivery spec sets a maximum silent percentage, the per-channel silent fraction (total silent duration over programme duration) exceeding it is also an error. The noise floor, gate, maximum interval and percentage ceiling are all spec-tunable via the paths below; absent values keep the defaults (this is an always-on integrity check, so a silent spec still measures and may fail). Per-channel results are emitted as `audio_silence_chN` for channel N; this catalogue entry covers all of them.
Spec fields consulted
These Universal Media Delivery Profile paths resolve this check's thresholds against your spec snapshot at the moment the job was submitted.
- · assets.audio.silence.floor_dbfs
- · assets.audio.silence.min_interval_s
- · assets.audio.silence.max_interval_s
- · assets.audio.silence.max_pct
The full UMDP schema: /umdp.
Related methods
Method identifier: audio_silence