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EnvelopeFilter Class

Time-domain envelope detector.
Inheritance Hierarchy

Namespace:  Accord.Audio.Filters
Assembly:  Accord.Audio (in Accord.Audio.dll) Version: 3.7.0
public class EnvelopeFilter : BaseFilter
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The EnvelopeFilter type exposes the following members.

Public methodEnvelopeFilter
Constructs a new Envelope filter
Public propertyAlpha
Public propertyFormatTranslations
Format translations dictionary.
(Inherited from BaseFilter.)
Public methodApply(Signal)
Applies the filter to a signal.
(Inherited from BaseFilter.)
Public methodApply(Signal)
Applies the filter to a windowed signal.
(Inherited from BaseFilter.)
Public methodEquals
Determines whether the specified object is equal to the current object.
(Inherited from Object.)
Protected methodFinalize
Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.
(Inherited from Object.)
Public methodGetHashCode
Serves as the default hash function.
(Inherited from Object.)
Public methodGetType
Gets the Type of the current instance.
(Inherited from Object.)
Protected methodMemberwiseClone
Creates a shallow copy of the current Object.
(Inherited from Object.)
Protected methodNewSignal
Creates a new signal from the given signal parameters. This method can be overridden on child classes to modify how output signals are created.
(Inherited from BaseFilter.)
Protected methodProcessFilter
Processes the filter.
(Overrides BaseFilterProcessFilter(Signal, Signal).)
Public methodToString
Returns a string that represents the current object.
(Inherited from Object.)
Extension Methods
Public Extension MethodHasMethod
Checks whether an object implements a method with the given name.
(Defined by ExtensionMethods.)
Public Extension MethodIsEqual
Compares two objects for equality, performing an elementwise comparison if the elements are vectors or matrices.
(Defined by Matrix.)
Public Extension MethodToT
Converts an object into another type, irrespective of whether the conversion can be done at compile time or not. This can be used to convert generic types to numeric types during runtime.
(Defined by ExtensionMethods.)

To extract the envelope of a time-domain signal, we must first compute the absolute signal values and then pass it through a low-pass filter.

See Also