ferraus vibrato

Vibrato (pitch modulation)

Synopsis

ferraus vibrato <input> [options] [-o <output>]

What it does

Modulates pitch with a sinusoidally swept delay; --depth is the peak deviation in cents. The constant delay is compensated so the output lines up with the input.

This command is also an fx stage and a pipeline op: ferraus fx in.wav -o out.wav --fx "vibrato:key=value".

Examples

Subtle vocal vibrato

ferraus vibrato vox.wav -o vox_vib.wav

Wider vibrato

ferraus vibrato synth.wav --rate 6.5Hz --depth 50cents -o wobble.wav

Slow, gentle vibrato on a held flute note

ferraus vibrato flute.wav --rate 4.5Hz --depth 15cents -o flute_vib.wav

Fast one-semitone wobble blended with the dry lead for a detuned effect

ferraus vibrato lead.wav --rate 7Hz --depth 100cents --mix 50% -o lead_detune.wav

Options

Global options

Every command also accepts the global options (-o, --json, --dry-run, --overwrite, --progress, ...). See Global options.

Exit codes

Common mistakes

• Forgetting that outputs are never overwritten: pass --overwrite or a new -o path when re-running.

For models

• MCP tool: ferraus_vibrato
• Schema: ferraus schema vibrato
• Pipeline: { op: vibrato, args: { ... } } (flag names with _ instead of -)
• fx stage: yes

{"command": "vibrato", "defaults": {"rate": "5Hz", "depth": "20cents", "mix": "100%"}}