Axtell's Notes: July 1

Very slow day. I first played with raising the threshold a little bit to see if I could clean up the peak graph at all, but it cut out too much data. I read a paper from ircam in France on spectral features. I looked at Gregor's FFT code that uses complex arrays instead of doubles to see how much work it would take to start using that instead of what we have now. There are basically two ways to adapt everything to work together. We could either get all the FFT data in a complex array, read just the real part as doubles into a double array that could be used in everything Tayloe and I have written, or we could adapt everything we have to work with a complex array. We're not sure which will work the best. We're going to try both tomorrow. I spent the rest of the morning trying to get rid of the miniwav's, but Tayloe's worked better so I scrapped that. We no longer use miniwavs at all. Maple Leaf Rag finishes in just over two minutes on our fastest computer now. It used to take 10-15.

In the afternoon, I fixed the colors again. Someday I'll be done fixing the colors. Now the colors are printed in order from quietest to loudest because the quieter peaks were covering up the louder peaks and making everything harder to read accurately.

Lastly, I worked on adding a Gaussian window because it is supposed to work better than the Hamming window which is out current default. That is almost working, though not at all in FFTGUI. In fact, FFTGUI doesn't work right now because I haven't had a chance to update it to deal with the added window.

So, first task tomorrow is getting FFTGUI working with Gaussian windows and making sure that my Gaussian window works. Then I will move on to switching our code from the old FFT class to Gregor's.