- controls the speed/rate of the LFO waves that control the flanger
- controls the depth of the LFO waves that control the flanger
- controls the resonance/feedback of the flanger
- controls the center amount of shift
The FL-04 is one of today's most popular effects. The flanging effect is produced by varying the delay between 2 identical signals, thus producing a complex varying "Comb Filter" effect. The adjustment possibilities allow a wide variety of modulation-effects from rich chorusing to shimmering space effects.