What is the fft window overlap on the spectral display?

Forum|Forum|5 years ago
March 27, 2020
1 reply
809 views

Hi, I would like to be able to tweak the step (or the overlap) between adjacent windows used to compute the spectral display. Is this possible?

If it isn't, at least it would be nice to know what is the overlap being used by default. Is it the same for all possible windows used (Hann, Hamming, Blackman, etc)? Anyone knows where I can find that information?

FYI I'm using build 13.0.4.39

Thanks.

This topic has been closed for replies.

SteveG_AudioMasters_

Community Expert

I'm afraid that if it's not in the Spectral Displays part of Preferences, or available as a right-click on the RHS of the specral display, you can't alter it. There is no information about this publically available, but I know that the overlap is set to optimise the refresh rate - but that's normal with this type of display. The same applies to the Frequency Analysis plugin -no information available.

AbmatosAuthor

Participant

Thank you very much for the information! 🙂

Do you know if there a channel where one can ask this kind of information directly to adobe (e.g. what is the overlap used)?

AbmatosAuthor

Participant

There is no channel accessible to you that would hand out that sort of technical information at all, I'm afraid. Also, I think (having studied what it does carefully) that it may well be that the overlap varies, according to the FFT size and resolution. If this is the case, then simply for commercial reasons, there's no way they are going to tell you, because it's performance-based. On top of that, Adobe have traditionally never handed out much in the way of technical information that they weren't absolutely forced to!

ok, thank you for the clarification.

Sign up

To post, reply, or follow discussions, please sign in with your Adobe ID.

Sign in to Adobe Community

To post, reply, or follow discussions, please sign in with your Adobe ID.

Scanning file for viruses.

This file cannot be downloaded