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<title>audiodynamic: GStreamer Good Plugins 1.0 Plugins Reference Manual</title>
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<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
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Top |
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Description |
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Object Hierarchy |
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Properties
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audiodynamic
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audiodynamic
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Properties
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GstAudioDynamicCharacteristics
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characteristics
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Read / Write
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GstAudioDynamicMode
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mode
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Read / Write
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gfloat
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ratio
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Read / Write
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gfloat
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threshold
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Read / Write
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Types and Values
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struct
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GstAudioDynamic
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Object Hierarchy
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GObject
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╰── GInitiallyUnowned
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╰── GstObject
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╰── GstElement
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╰── GstBaseTransform
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╰── GstAudioFilter
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╰── GstAudioDynamic
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Description
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This element can act as a compressor or expander. A compressor changes the
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amplitude of all samples above a specific threshold with a specific ratio,
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a expander does the same for all samples below a specific threshold. If
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soft-knee mode is selected the ratio is applied smoothly.
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Example launch line
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1
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2
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3
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gst-launch-1.0 audiotestsrc wave=saw ! audiodynamic characteristics=soft-knee mode=compressor threshold=0.5 ratio=0.5 ! alsasink
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gst-launch-1.0 filesrc location="melo1.ogg" ! oggdemux ! vorbisdec ! audioconvert ! audiodynamic characteristics=hard-knee mode=expander threshold=0.2 ratio=4.0 ! alsasink
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gst-launch-1.0 audiotestsrc wave=saw ! audioconvert ! audiodynamic ! audioconvert ! alsasink
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Synopsis
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Element Information
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plugin
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audiofx
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author
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Sebastian Dröge <slomo@circular-chaos.org>
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class
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Filter/Effect/Audio
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Element Pads
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name
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sink
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direction
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sink
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presence
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always
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details
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audio/x-raw, format=(string){ S16LE, F32LE }, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], layout=(string){ interleaved, non-interleaved }
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name
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src
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direction
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source
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presence
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always
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details
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audio/x-raw, format=(string){ S16LE, F32LE }, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], layout=(string){ interleaved, non-interleaved }
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Functions
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Types and Values
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struct GstAudioDynamic
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struct GstAudioDynamic;
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Property Details
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The “characteristics” property
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“characteristics” GstAudioDynamicCharacteristics
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Selects whether the ratio should be applied smooth (soft-knee) or hard (hard-knee).
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Flags: Read / Write
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Default value: Hard Knee (default)
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The “mode” property
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“mode” GstAudioDynamicMode
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Selects whether the filter should work on loud samples (compressor) orquiet samples (expander).
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Flags: Read / Write
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Default value: Compressor (default)
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The “ratio” property
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“ratio” gfloat
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Ratio that should be applied.
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Flags: Read / Write
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Allowed values: >= 0
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Default value: 1
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The “threshold” property
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“threshold” gfloat
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Threshold until the filter is activated.
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Flags: Read / Write
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Allowed values: [0,1]
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Default value: 0
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