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/usr/lib/pd/extra/cyclone/buffir~-help.pd is in pd-cyclone 0.2~beta3-4.

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#X text 0 31 LICENSE SIBSD;
#X text 0 139 LIBRARY cyclone;
#X text 0 49 DESCRIPTION converts all signal values to positive values
;
#X text 0 0 KEYWORDS signal buffer buffir buff FIR finite impulse response
convolution filter;
#X text 0 67 INLET_0 signal;
#X text 0 85 INLET_1 float;
#X text 0 103 INLET_2 float;
#X text 0 121 OUTLET_0 signal;
#X text 0 158 VERSION 0.2-beta1;
#X text 0 176 AUTHOR Krzysztof Czaja;
#X text 1 194 RELEASE_DATE 2002;
#X text 2 213 WEBSITE http://suita.chopin.edu.pl/~czaja/miXed/externs/cyclone.html
;
#X text 2 245 HELP_PATCH_AUTHORS Christoph Kummerer. Revised by Jonathan
Wilkes for Pd-extended 0.42 to conform to the PDDP template. Alex Cleveland
updated this patch for Pd-l2ork version 2013.05.28. Fred Jan Kraan
adapted the patch to pd-extended 2015-02-02;
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#X text 164 343 - signal to pass to FIR;
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#X text 12 23 table based FIR (finite impulse response) convolution
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