mirror of https://github.com/mpv-player/mpv
Document sinesupress audio filter, thanks to the help of Michael Niedermayer and Jan Knutar.
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@18085 b3059339-0415-0410-9bf9-f77b7e298cf2
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@ -4069,6 +4069,23 @@ Sine function delta, use very low values to hear the sweep.
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.PD 1
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.TP
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.B sinesupress[=freq:delay]
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Remove a sine at the specified frequency.
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Usefull to get rid of the 50/60hz noise on low quality audio equipment.
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It probably only works on mono input.
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.PD 0
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.RSs
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.IPs <freq>
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The frequency of the sine which should be removed (in Hz) (default: 50)
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.IPs <decay>
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Controls the adaptivity (a larger value will make the filter adapt to
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amplitude and phase changes quicker, a smaller value will make the
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adaptation slower) (default: 0.0001).
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Reasonable values are around 0.001.
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.RE
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.PD 1
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.
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.TP
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.B hrtf[=flag]
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Head-related transfer function: Converts multichannel audio to
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2 channel output for headphones, preserving the spatiality of the sound.
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