GET

/v1/schemas/fal/audio/fal-ai/workflow-utilities/audio-compressor

Accept:

kind inputactivity audiohash 6556dbfa…extracted Jul 6, 2026version currentsource upstream spec ↗

field	recorded source
schema	Source linked above. Source trace `309ba399ef304c84be90764a25098cc9aae10d18401670e45e45312bf9d45794` { "fetchedAt": 1783331098, "extractorVersion": "1", "verifiedAt": null }

Request body

8 properties · 1 required · 0 $defs

property	type	description	constraints
audio_url*	string	URL of the audio file to compress
makeup	number	Makeup gain in dB to compensate for volume reduction	0 ≤ n ≤ 64 · default: 8
ratio	number	Compression ratio (1 = no compression, higher = more compression)	1 ≤ n ≤ 20 · default: 3
attack	number	Attack time in milliseconds (how fast compression starts)	0.01 ≤ n ≤ 2000 · default: 5
threshold	number	Threshold level in dB above which compression is applied (-60 to 0)	-60 ≤ n ≤ 0 · default: -18
knee	number	Knee width in dB for soft knee compression (0 = hard knee)	1 ≤ n ≤ 8 · default: 2.83
output_bitrate	enum	Output audio bitrate	128k \| 192k \| 256k \| 320k · default: "192k"
release	number	Release time in milliseconds (how fast compression stops)	0.01 ≤ n ≤ 9000 · default: 50

Validate a payload

before you spend tokens

shell

$ curl -X POST https://modelschemas.com/v1/validate \
    -d '{"provider":"fal","endpointId":"fal-ai/workflow-utilities/audio-compressor","payload":{…}}'
→ {"valid": false, "errors": [{"path": "#", "keyword": "required", …}]}