Chorus Implementation

A chorus effect may be efficiently implemented using a multi-tap fractional delay line:

• taps are not fixed and usually range from 10 to 50 ms.

• their instantaneous delay may be determined using a random noise generator or, as in the flanger, a Low Frequency Oscillator (LFO).

Figure 5: A bank for variable delay lines realize the chorus effect.

The chorus is similar to the flanger, only there are multiple delayed copies of the input, and the delay times are typically longer (where a flanger is about 1-10 ms, a chorus is about 10-50 ms).