ref: 6c2f8c4091d1dea02adef9cd2fd62b9cccca245e
parent: 34e2bbd9041a7d7e1f15b56845a51d6e195acd76
author: robs <robs>
date: Sun Feb 8 04:13:02 EST 2009
add blurb on auto dither
--- a/sox.1
+++ b/sox.1
@@ -361,6 +361,19 @@
Applying multiple effects with a single SoX invocation will,
in general, produce more accurate results than those produced using
multiple SoX invocations; hence this is also recommended.
+.SS Dither
+Dithering is a technique used to maximise the dynamic range of audio
+stored at a particular bit-depth and is achieved by adding a small amount
+of white noise to the signal. In most cases, SoX can determine whether
+the selected processing requires dither and will add it if appropriate.
+Use the
+.B \-V
+option to see what processing SoX has automatically added.
+To override automatic dithering, the
+.B \-D
+option may be given; to invoke dithering manually, use the
+.B dither
+effect.
.SS Clipping
Clipping is distortion that occurs when an audio signal
level (or `volume') exceeds the range of the chosen representation.