I played a 4 second 20~15K sine sweep through a stomp box and recorded the result.
I then put the test file and the recording through deconvolver.
What I ended up with was a sort of synth envelope follower, whereas I was expecting more of an EQ fingerprint.
Did I do something wrong?
Should this process not work?
It's still a frequency plot through the time domain yes ?
The sweep seemed far more applicable than an impulse, especially as I was interested in the frequency response of the system under test.
But in theory you could convolve anything - including a delay line yes ?
Slightly baffled ;-)
BTW, as insane as it sounds, does anyone have a wave file of an impulse trigger- like a balloon or starter pistol they want to share ?
Presumably that would have to be a pretty anechoic recording ?
Or if you were going to synthesise it, could it be a few mS white noise burts or something ?
Should it have an envelope, or should it have attack and release and if so of what magnitude ?
Am I wrong in thinking that what the deconvolver does (put basically) is remove the test tone from the captured impulse ?
i.e. it removes the actual tone sweep, just leaving the reverb image ?
If this is true, if I give it the starter pistol as the relevent wave, would it not handle that equally as well as the sweep ?
So should what I did, have captured a normal reverb/space and/or a tonal device (ie EQ or retro gear)?
Or does retro gear need to be handled differently for some reason?
Aleksy, I'll email you the source files.
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