diff --git a/doc/filters.texi b/doc/filters.texi index 4b8e8de81b..274532dcfb 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -1823,6 +1823,72 @@ than the signal (making it, in some ways, similar to squelch): @example compand=.1|.1:.1|.1:-45.1/-45.1|-45/-900|0/-900:.01:45:-90:.1 @end example + +@item +2:1 compression starting at -6dB: +@example +compand=points=-80/-80|-6/-6|0/-3.8|20/3.5 +@end example + +@item +2:1 compression starting at -9dB: +@example +compand=points=-80/-80|-9/-9|0/-5.3|20/2.9 +@end example + +@item +2:1 compression starting at -12dB: +@example +compand=points=-80/-80|-12/-12|0/-6.8|20/1.9 +@end example + +@item +2:1 compression starting at -18dB: +@example +compand=points=-80/-80|-18/-18|0/-9.8|20/0.7 +@end example + +@item +3:1 compression starting at -15dB: +@example +compand=points=-80/-80|-15/-15|0/-10.8|20/-5.2 +@end example + +@item +Compressor/Gate: +@example +compand=points=-80/-105|-62/-80|-15.4/-15.4|0/-12|20/-7.6 +@end example + +@item +Expander: +@example +compand=attacks=0:points=-80/-169|-54/-80|-49.5/-64.6|-41.1/-41.1|-25.8/-15|-10.8/-4.5|0/0|20/8.3 +@end example + +@item +Hard limiter at -6dB: +@example +compand=attacks=0:points=-80/-80|-6/-6|20/-6 +@end example + +@item +Hard limiter at -12dB: +@example +compand=attacks=0:points=-80/-80|-12/-12|20/-12 +@end example + +@item +Hard noise gate at -35 dB: +@example +compand=attacks=0:points=-80/-115|-35.1/-80|-35/-35|20/20 +@end example + +@item +Soft limiter: +@example +compand=attacks=0:points=-80/-80|-12.4/-12.4|-6/-8|0/-6.8|20/-2.8 +@end example @end itemize @section compensationdelay