Audiosculpt is a software developed by IRCAM in Paris which contains two majors processing kernel:
– SuperVP, an extended phase vocoder
– Pm2, a sinusoidale model analyser
It opens a wide panel of treatment and analyse with an original approach, sculpts any sound from a sonogram (FFT) and his spectrum.
There is a long list of analyses and treatments that can be combined, merged,…
It takes time to be comfortable with and requires a bit of perseverance, but then, it may become your “must have” tool to create original textures.
There is some example of material I created in the past years with this software:
Faunethic 