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Diffstat (limited to 'pd/doc/4.fft.examples')
| -rw-r--r-- | pd/doc/4.fft.examples/00.INTRO.txt | 60 |
1 files changed, 4 insertions, 56 deletions
diff --git a/pd/doc/4.fft.examples/00.INTRO.txt b/pd/doc/4.fft.examples/00.INTRO.txt index b5218793..c27120b8 100644 --- a/pd/doc/4.fft.examples/00.INTRO.txt +++ b/pd/doc/4.fft.examples/00.INTRO.txt @@ -1,63 +1,11 @@ -These patches demonstrate how to use Pd's short-time Fourier transform objects, -rfft~ and rifft~, to do a variety of things. The patches can be quite -expensive; the phase vocoder, for instance, requires a 300MHz Pentium 2 to run -at 44100 Hz. By default Pd runs at 44100 Hz, but you can specify a different -sample rate on the command line, for instance: - -pd -r 16000 09.pvoc.pd - -On SGI, Pd will check whether your audio system is running at the correct -sample rate and will print out a warning if not. In NT or W95, Pd's behavior -will depend on your audio driver. In Linux Pd usually tries to set the rate -of the conversion hardware. - -Included in this directory are: - -01.fftanalysis.pd -- does a windowed FFT analysis and resynthesis of a sine -tone, showing how to specify block size and overlap. - -02.noisefft.pd -- Fourier analysis of white noise. This patch also shows how -you can average power spectra over time. - -03.denoise.pd -- using the technique from the previous patch, finds the noise -floor in a recorded sample and attempts to scrub it away. - -04.shifts.pd -- tests the leftshift and rightshift "externs" used in the next -patch. - -05.sheepgoat.pd -- tries to discriminate between "pitched" and "unpitched" -components of a sound. - -06.sheepgoat2.pd -- another attempt at the same thing. - -07.tinbell.pd -- a spectral flattener, which can make the sound of a large bell -turn into the sound of a tamtam. - -08.convobros.pd -- spectral cross synthesis between two sounds - -09.pvoc.pd -- phase vocoder - ----------- after this point, the patches haven't been cleaned up ----------- - -10.phaselockedvoc.pd -- phase locked vocoder; see Laroche&Dolson in ICMC97 for -a discussion of something that works better than this. - -11.pianorev.pd -- an attempt at a phase-coherent reverberation algorithm to -imitate the "piano reverb" obtained by putting a speaker under the sound board -of a piano and picking up the sympathetic vibrations. +Most of the patches here have moved to section I of the audio examples. +The remaining ones are due for an update but will probably join the +"data" examples. 12.sinedecomposer.pd -- estimate the frequencies and amplitudes of the components of a sound -13.tracemaker.pd -- show how to use Pd to combine snapshots of a spectrum into -continuous spectral traces. - -14.partialtracer.pd -- sinusoidal analysis/resynthesis of a time-verying sound. - -15.waveformgrab.pd -- bash a sample into phase-coherent windows and make a -pitched resynthesis. - - +13.partialtracer.pd -- sinusoidal analysis/resynthesis of a time-verying sound. |