A topic the music students particularly enjoyed was the frozen sound, the audio equivalent of the cinematic "freeze frame shot". I taught the nuts and bold of the real-time stochastic spectral freeze technique (the stochastic component is aimed at breaking the ice - with the audience).
On this video, discover 5 variations on a Max/MSP/Jitter freeze tool:
- A Tutorial on Spectral Sound Processing with Max/MSP and Jitter (Computer Music Journal, Fall 2008)
- Spectral freeze Max MSP Jitter patches (link updated 01/12/2010)
The program for just two 3-hour workshops was quite ambitious!
- Overview of the topic: “Spectral processing, or having fun with graphics and sound.”
All students and faculty members are welcome (not only to the computer music specialists).
- Spectral explorations 1
Sonogram. Fast Fourier Transform (FFT). Recording spectral data into Jitter matrices. Frame to frame playback.
- Introduction to Jitter
Matrices, filters, expressions.
- Spectral explorations 2
Phase vocoders: Max/MSP version versus Max/MSP/Jitter version. Variable-speed playback (time stretching, time compression).
Waiting for next session
Assignment! Play with pictures, spectrograms, vocoders, [pfft~].
- Spectral explorations 3
Real-time spectral processing with Max/MSP. Denoiser, amplitude compression, frequency shifting, pitch shifting.
- Spectral explorations 4
Back to our Max/MSP/Jitter phase vocoder. Blurry playback.
- Spectral explorations 5
Real-time spectral processing with Max/MSP and Jitter. Real-time Freeze.