ref: dd06c89010a81f089c7395887bb5c4fa0054b65b
parent: 4787ae165800172f42425538cbe616986427c656
author: robs <robs>
date: Tue Apr 14 16:58:24 EDT 2009
doc updates
--- a/sox.1
+++ b/sox.1
@@ -2923,14 +2923,16 @@
magnitude in the Z-axis. Z-axis values are represented by the colour
(or intensity) of the pixels in the X-Y plane.
.SP
-This effect supports only one channel; for multi-channel input files,
-use either SoX's
-.B \-c 1
-option with the output file (to obtain a spectrogram on the mix-down),
-or the
+This effect supports only one channel.
+For multi-channel input files, use the
.B remix
+effect as either
+.B remix \-
+to obtain a spectrogram on the mix-down,
+or
+.B remix
.I n
-effect to select a particular channel. Be aware though, that both of
+to select a particular channel; be aware though, that both of
these methods affect the audio in the effects chain.
.RS
.IP \fB\-x\ \fInum\fR
@@ -2976,7 +2978,7 @@
.BR spectrogram ;
e.g.
.EX
- sox audio.ogg -r 4k -n rate spectrogram
+ sox audio.ogg -n rate 4k spectrogram
.EE
allows detailed analysis of frequencies up to 2kHz (half the sampling
rate).