Update of /cvsroot/pure-data/pd/doc/4.fft.examples In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv6096/pd/doc/4.fft.examples

Modified Files: 00.INTRO.txt Log Message: Damn, edited this before and lost the update. More data features. Took about 12 patches.

Index: 00.INTRO.txt =================================================================== RCS file: /cvsroot/pure-data/pd/doc/4.fft.examples/00.INTRO.txt,v retrieving revision 1.1.1.1 retrieving revision 1.2 diff -C2 -d -r1.1.1.1 -r1.2 *** 00.INTRO.txt 29 Jul 2002 17:06:09 -0000 1.1.1.1 --- 00.INTRO.txt 18 May 2005 04:28:31 -0000 1.2 *************** *** 1,62 **** ! 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.

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. ! !

--- 1,10 ---- ! 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.partialtracer.pd -- sinusoidal analysis/resynthesis of a time-verying sound.