[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: echo in the freq. domain
I am trying this in the frequency domain because I have a freq domain
time in > hop size shift > window > dft > SOMETHING > idft > window
>overlapp add > time out
I wanted to use this setup to try ANY kind of effect I can just by
manipulating with the spectrum bins or whole dft frames. It was pretty
easy to get a decent reverb. I also just did simple echo: saved quarter
a second worth of dft frames and then added them back (attenuated) to
current frames... and voila, not bad echooo choo oo o!
On 13.5.2010 0:02, Dan Stowell wrote:
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
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:
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....