Mon, 18 Sep 2006 17:08:32 -0400 "Spencer Russell" <slothlove@xxxxxxxxx> ha scritto: > On 9/18/06, Atte André Jensen <atte.jensen@xxxxxxxxx> wrote: > > > > Well (as I mentioned) I've never used any autotune, but was hoping > > for a magical "make my singing in tune" plugin. I'm affraid too > > much efford won't be worth it, since we're strictly talking demoing > > a melody for real singer to record... > > > > A while ago I was thinking of the best way to implement some sort of > autotune-like program, and this is what I came up with: > > The user would import the sound file in question, and the program > would display a spectrogram ( > http://en.wikipedia.org/wiki/Image:Spectrogram_of_violin.png ) with > horizontal lines superimposed that indicate the frequencies of the > equal-tempered 12 half-step scale that most of us are used to. Then > the user could easily add points to define an automation curve like in > Ardour, and see in real time how it effects the spectrogram, to line > up the fundemental frequency peaks with the right notes. Then they > just export the pitch-corrected file. > > I'm not much of a programmer, but it seems like there are libraries to > do most of the necessary functions, with probably the hardest thing > being the real-time updating of the FFT display. Seems like it could > be a useful little tool. Baudline (http://www.baudline.com/) has a very good realtime spectrogram visualiser. It also has the ability to see the "harmonics guidelines", and a lot of very useful tools to accurately measure the fundamental (among other things). It's really a great tool for frequency-domain (but also time-domain) analysis. The only thing it lacks is the ability to _edit_ the file in a visual manner. One kind of editing could be the autotuning feature as you suggested. Another one would be the ability to edit the spectrogram with brushes, like a photo-editing program. If only some programmer would care to create a such tools would be very very useful ;-). Sorry if I went OT. Cheer, ~ Antonio
