SnapOtter/apps/docs/tools/audio/silence-removal.md

description

description
Strip silent sections from an audio file.

Silence Removal

Detect and remove silent sections from an audio file based on a configurable threshold and minimum duration.

API Endpoint

POST /api/v1/tools/audio/silence-removal

Accepts multipart form data with an audio file and a JSON settings field.

Parameters

Parameter	Type	Required	Default	Description
thresholdDb	number	No	-50	Silence threshold in dB (-80 to -20). Audio below this level is considered silent.
minSilenceS	number	No	0.5	Minimum silence duration in seconds to remove (0.1 to 5)

Example Request

curl -X POST http://localhost:1349/api/v1/tools/audio/silence-removal \
  -H "Authorization: Bearer si_your-api-key" \
  -F "file=@audio.mp3" \
  -F 'settings={"thresholdDb": -45, "minSilenceS": 1}'

Example Response

{
  "jobId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
  "downloadUrl": "/api/v1/download/a1b2c3d4-e5f6-7890-abcd-ef1234567890/audio.mp3",
  "originalSize": 4500000,
  "processedSize": 3200000
}

Notes

• A higher (less negative) threshold is more aggressive and removes quieter passages as well as true silence.
• Increase minSilenceS to only strip longer pauses while keeping short natural gaps.
• Useful for cleaning up podcast recordings, lectures, and voice memos.
• Output format matches the input format.