Metallum video
Last year, I told you about the Metallum installation: a ritual toupin, with imaginary echoes sent back by the rock faces of my native mountains.
Here is a short video:
Link: Metallum on youtube.
Max for Live: Extreme Time Stretching with Spectral Stretch
There are many ways to achieve audio time stretching without transposition . Some time-based methods build on Pierre Schaefer 's Phonogène . Another approach consists in processing the sound in spectral domain, using a phase vocoder . In this case, the audio samples are converted to spectral data through a Fast Fourier Transform (FFT). Then, even if we focus on extreme time stretching, the details of the phase vocoder implementation have important consequences on the sound quality and the tool's flexibility for live usage. Before introducing the Max for Live device Spectral Stretch, let's have a look at a selection of four possible algorithms: Paulstretch Max Live Phase Vocoder Interpolation between recorded spectra Stochastic Re-synthesis from a recorded sonogram Paulstretch Paul's Extreme Sound Stretch , also known as Paulstretch , is an algorithm designed by Paul Nasca for extreme time stretching. You might have heard one application already: to this date,
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