6 copyright: Copyright (C) 2003-2011 Ushodaya Enterprises Limited
9 url: http://sox.sourceforge.net/
13 description: Process audio using a SoX effect.
15 - Some effects are stereo only, but MLT processes each channel separately.
16 - Some effects have a temporal side-effect that do not work well.
19 - identifier: argument
20 title: Effect name and options
22 format: effect [options]
24 If the effect name is "analysis" then it does not run any effect.
25 Instead, it analyzes the audio to determine a normalized gain level.
26 The results are put into the level, peak, and gain properties as well
27 as this effect property as the parameter to the vol effect.
30 title: Signal power level (RMS)
35 title: Peak signal level
40 title: Gain to normalize
44 - identifier: use_peak
47 Use peak signal level instead of RMS (root mean square) power level to
48 compute gain for normalization.
55 - identifier: normalise
56 title: Dynamic normalization
58 This computes the gain for normalization dynamically per frame, but it
59 uses a sliding smoothing window to prevent the gain from fluctuating wildly.
60 Currently, this must be used in combination with some SoX effect.
68 title: Smoothing window size
75 - identifier: max_gain
78 With dynamic normalization, this puts a maximum limit on the amount of gain.