How to add vibrato
1. Drop an audio file you already have. A photo or a video is refused here. 2. Leave light, or pick medium or deep. 3. Press “Add vibrato” and download.
GustKit runs the FFmpeg vibrato filter. Light wobbles at 4 Hz with a depth of 0.25. Medium uses 5.5 Hz and a depth of 0.5. Deep uses 7 Hz and a depth of 0.8. MP3, WAV, M4A, OGG and FLAC stay in that type. A video soundtrack belongs on the video pages.
A wobble of pitch
Audio phaser sweeps the phase. Audio flanger mixes a moving delay. Audio tremolo pulses the volume. This page moves the pitch up and down and leaves the length almost the same. It does not change the volume knob.
The audio stays in this tab
FFmpeg runs in this browser. GustKit does not fetch audio from a link. Close the tab and the file is gone. Files up to the limit shown next to the button.
How to check the vibrato
1. Play the download next to the original. 2. Light should wobble a little. Deep should wobble harder. 3. If the file type changed, you opened a different page.
Audio phaser sweeps the phase. This page runs the FFmpeg vibrato filter and keeps the file type. The pitch moves. Nothing is uploaded.