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Old 02-26-2020, 07:50 AM   #239
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Join Date: Feb 2009
Location: Reaper HAS send control via midi !!!
Posts: 2,310

Originally Posted by juliansader View Post
I agree that, at present, REAPER's spectrogram does not work well for fine editing of individual frequencies, since the frequency resolution is far too low.

It would be very helpful if REAPER could use a higher FFT size for the spectragrams. Either as a default, or if possible, as a per-item setting.

Here is a comparison between REAPER and RX7's spectrograms for the same piece of music:



The RX7 spectrogram is obviously much sharper in the frequency domain, and much more informative.

RX7 offers advanced options such as "Adaptively sparse" analysis, and I don't know how difficult it would be to program these for REAPER.

However, even when using only the most basic settings, a spectrogram can be vastly improved by simply tweaking the FFT size. My guess is that REAPER uses an FFT size of 256 samples, since RX7 and Audacity's spectrograms look very similar to REAPER's, if they use that FFT size (and only basic analysis).

Here is Audacity's version, with an FFT size of 4096. Although not as good as RX7, it is a big improvement over REAPER:

Yousing youtube examples would allow comparison with other techniques, like tony, sonic visualiser, sonic-annotator or reaper.
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