hi,

although sinusoidal models seem to be better suited for morphing than plain sfft methods, you should be able to find many sfft morphing examples in ICMC, DAFx, and probably other conference proceedings (all DAFx papers are available online).

The one easiest source of reference you should have a look at is the work of Christopher Penrose and Eric Lyon, for example http://www.sfc.keio.ac.jp/~penrose/PVNation. There is a jMax port of FFTease at http://mamalala.de/files/FFTease/index.html.

The classic sfft-based application is SoundHack (Macintosh only). SoundHack `mutations' are described in

@Article{ polansky96, author = "Polansky, L., Erbe, T.", title = "Spectral Mutation in Soundhack", journal = "CMJ", year = 1996, volume = 20, number = 1, pages = "92-101" }

The program itself is described in

@Article{ erbe97, author = "Erbe, T.", title = "SoundHack: A Brief Overview", journal = "CMJ", year = 1997, volume = 21, number = 1, pages = "35-38" }

Krzysztof

Yves Degoyon wrote:

...

of this mail is a request for finding litterature about fft's morphing algorithms. the goal is to implement these algorithms to provide new transformations to sonograph~.

...