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Fft Window Size Dont Affect Sound Quality
matsc
post Sep 20 2016, 07:52 AM
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Hi
Setting different fft window size affect the sonogram in a predictable way

But, if you lets say do a 10x lengthening of a sound file there should be a significant change in sound quality when you change the fft, window size, that is when doing for example a 64 sample fft window compared to a 2048 fft window

It is a visual thing in IRCAM Lab but there are no changes in sound quality and it should be.....It seems like ther are two fft analyses one for the sonogram ,and a hidden one for the actual sound

What have I missed? There must be a button that I havent seen....?
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Ashley Smith
post Sep 20 2016, 11:50 AM
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Hi matsc,

There will be no changes to the sound quality by changing the Sonogram display in TS, only those parameters utilized to strech/transpose etc. The Sonogram simply put gives you a visual display or represenattion of the sound and its component frequencies and noise that make it up, a guide if you will to then enact effect and maniuplate your audio and see the change(s). Details/explanation of the settings adjustments are available in section 2 (page 27) of your help documentation.

Thanks!


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matsc
post Sep 21 2016, 08:41 AM
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QUOTE (Ashley Smith @ Sep 20 2016, 12:50 PM) *
Hi matsc,

There will be no changes to the sound quality by changing the Sonogram display in TS, only those parameters utilized to strech/transpose etc. The Sonogram simply put gives you a visual display or represenattion of the sound and its component frequencies and noise that make it up, a guide if you will to then enact effect and maniuplate your audio and see the change(s). Details/explanation of the settings adjustments are available in section 2 (page 27) of your help documentation.

Thanks!


Thanks for answering.
Yes thats what I figured out. There are only a few analyse settings and the sonogram sits outside the actual sound manipulation algorithms.

Its a bit weird that there are so many possibilities for the sonogram and just a handful for the audio part. But I understand why its done that way.......in a way ;-)
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