Flanging Model

Model = Feedforward comb filter with variable delay $M$ :

$$y(n) = x(n) + g x[n-M(n)] \protect$$

• $g =$ ``depth'' of the flanging effect
• $M(n) =$ length of the delay-line at time $n$
• $M(n)$ typically triangular or sinusoidal
• Delay length is modulated by an ``LFO''
• Smooth delay variation demands interpolation