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Re: echo in the freq. domain

Hi -

You can do an echo (delay) effect in the frequency domain using convolution, exactly the same as you would for reverb - you would just use a different impulse response (a sparser one, typically, in the time domain).

However, the sparsity means that you can typically implement it efficiently enough in the time domain, so there's not much point doing it frequency-domain. Why do you want to do it?


Danijel Domazet wrote:
Hi auditory,
I'd like to do a simple Echo effect in the frequency domain. Does anyone remember any paper on the subject? There is a nice paper on freq domain reverberation ("Frequency Domain Artificial Reverberation using Spectral Magnitude Decay", Vickers E.), but couldn't find any on the echo....


Danijel Domazet

Dan Stowell
Centre for Digital Music
Queen Mary, University of London
Mile End Road, London E1 4NS