- #1

Evo8

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- 0

## Homework Statement

Im trying to model this in simulink. I am having a little trouble getting things to work. I need to create a variable delay model or basically implement a "flanger" effect.

Flange

A flange is an audio effect, which is achieved by combining two identical signals with each other; the original and delayed signal by a gradually changing amount. The difference equation for the flange effect is given by:

$$x(n)a*[x(n)+x(n-d(n))]$$

Where the time varying delay is given by

$$d(n)=D+\frac{D}{2}[1-sin(\frac{2 \pi f_{d} n}{f_{s}})]$$

Where

- D is a fixed delay,

- fd is the flanging frequency

## Homework Equations

N/A

## The Attempt at a Solution

So this is what I have right now.

The parameters of the Variable fractional delay block are here:

Im basically trying to mimic that equation with math operators. I am told that it should do the trick. However it doesn't. I am not sure where I am going wrong. Any hints or tips would be greatly appreciated!

Thank you,

E