Wow & flutter

White key 10. Tape warble: a slow drift in pitch and the fast wobble of a capstan, with worn tape’s dropouts.

Knob	Page 1	Page 2
1	Wow: how often the pitch drifts and how much of it you hear, together (default off; TAPE’s warble)	Mix
2	Flutter: a fast, shallow wobble, up to 1.4% of pitch; real tape’s 0.1-0.5% is the lower half (default off)	Stereo: the right channel drifts on its own and wobbles out of step (default off)
3	Tone, lowpass 200 Hz to open (default open)	Band
4	Age: worn tape’s dropouts, the level dipping at random, more often, deeper and longer as you turn it up (default none)	Level

• Wow: a short delay (2-20 ms) that now and then heads for a new length at a random speed, so the pitch drifts like a worn tape’s. The knob sets both how often (0.1 to 30 times a second) and how much of the drift you hear: around the middle the drifting copy blends with the untouched sound into a chorus, at the top you hear only the drift.
• Flutter is two fast wobbles, at 7.3 Hz and 11.7 Hz, like a capstan’s and a pinch roller’s. It brings the effect in over the first quarter of its knob, so it works without the wow.
• Tone darkens what comes off the tape, not the untouched sound.
• LEDs: the key is teal; the knobs go teal to purple.