Predictive fft~

Nov 14, 2007 at 3:35pm

Predictive fft~

Hi all,

I am investigating the posibilities of using ftt to predict sound. I would love your thoughts on the best way to do this. I guess it would be great to specify the analysis window size and then how far that moves into the future. I am pretty sure fft is the way to go.

Has anyone heard what this sounds like?

Best

Tim

#34598
Nov 14, 2007 at 3:40pm

Wow!! I will be checking this topic! Predicting sound, amazing..

( maybe, one day, max will be able to bend the time space continuum.. ;) )

#117082
Nov 16, 2007 at 12:03am

Timothy Devine schrieb:
> I am investigating the posibilities of using ftt to predict sound. I
> would love your thoughts on the best way to do this. I guess it
> would be great to specify the analysis window size and then how far
> that moves into the future. I am pretty sure fft is the way to go.

I am not sure what you are after, there is a philosophical problem with
predicting the future… ;-)

I think the Axxon pitch detectors used neural nets to predict the pitch
before it actually is detectable with other methods. I guess they used
both, the fft analysis and the timestructure of the envelope and matched
it to a database of guitar sounds…

Stefan


Stefan Tiedje————x——-
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#117083
Nov 16, 2007 at 9:03pm

While “predicting” or at least “guessing” the future can be quite challenging, it’s still possible to first record something, and second do the analysis, so that you know exactly what you are analyzing. Then I agree it’s not realtime. Latency could be a possible trade-off …

#117084

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