ref: e1e358ec2c84ac0e6cecf5b1a91e583d9a1b0860
parent: 3551f2a82d7c32d6014e477263a8ca242e704a71
author: robs <robs>
date: Wed Jan 17 18:25:02 EST 2007
tidy-ups
--- a/sox.1
+++ b/sox.1
@@ -1363,10 +1363,10 @@
or if unspecified).
.I Q
applies only to double-pole filters; its default value is 0\*d707 and gives
-a Butterworth response. The single-pole and double-pole filters roll off at
-6 and 12 dB per octave (20 and 40 dB per decade) respectively. See
-http://www.musicdsp.org/files/Audio-EQ-Cookbook.txt for a detailed
-discussion of the double-pole filters.
+a Butterworth response. The filters roll off at
+6dB per pole per octave (20dB per pole per decade). See
+http://musicdsp.org/files/Audio-EQ-Cookbook.txt for a detailed
+description of the double-pole filters.
.SP
These effects support the \fB\-\-octave\fR global option (see above).
.SP
@@ -1380,7 +1380,7 @@
.B -1
option; it is retained for backwards compatibilty only.
.TP
-\fBlowpass \fIfrequency\fR
+\fBlowpass\fR [\fB-1\fR|\fB-2\fR] \fIfrequency\fR [\fIQ\fR]
Apply a low-pass filter.
See the description of the \fBhighpass\fR effect for details.
.TP