#include <AudioDescriptors.hxx>

Public Member Functions
	DYNAMIC_TYPE_USING_INTERFACE (AudioDescriptors, 8, DescriptorAbs)
	DYN_ATTRIBUTE (0, public, TData, Mean)
	The mean value of the absolute value of the audio samples amplitude.
	DYN_ATTRIBUTE (1, public, TData, Variance)
	The variance of audio samples amplitude.
	DYN_ATTRIBUTE (2, public, TData, TemporalCentroid)
	The temporal centroid is time where signal energy is "concentrated".
	DYN_ATTRIBUTE (3, public, TData, LogAttackTime)
	The log-attack time is the (base 10) logarithm of the rise time.
	DYN_ATTRIBUTE (4, public, TData, Energy)
	The squared sum of audio samples amplitudes.
	DYN_ATTRIBUTE (5, public, TData, ZeroCrossingRate)
	The zero-crossing rate is a measure of the number of time the signal value cross the zero axe, averaged over the whole signal.
	DYN_ATTRIBUTE (6, public, TData, RiseTime)
	The rise time is the time duration between the signal reached 2% of it maximum value to the time it reaches 80% of its maximum value.
	DYN_ATTRIBUTE (7, public, TData, Decrease)
	The temporal decrease is a measure of the amount of decrease in the signal energy.
	AudioDescriptors (Audio *pAudio)
	AudioDescriptors (TData initVal)
const Audio *	GetpAudio () const
void	SetpAudio (Audio *pAudio)
void	ConcreteCompute ()
Public Member Functions inherited from CLAM::DescriptorTmpl< abs >
	DescriptorTmpl (int n)
	DescriptorTmpl (const DescriptorTmpl< abs > &prototype, bool shareData=false, bool deep=true)
virtual	~DescriptorTmpl ()
virtual void	Compute ()
void	SetPrototype (const DescriptorTmpl< abs > &proto)
Public Member Functions inherited from CLAM::ProcessingData
	ProcessingData (const int n)
	Constructor of an object that will contain the number of attributes passed by parameter.
	ProcessingData (const ProcessingData &prototype, bool shareData=false, bool deep=true)
	Copy constructor of a ProcessingData object.
virtual	~ProcessingData ()
Public Member Functions inherited from CLAM::DynamicType
	DynamicType (const int nAttr)
	Constructs a DynamicType object that can hold.
	DynamicType (const DynamicType &prototype, const bool shareData, const bool deepCopy)
	Copy constructor of a dynamic Type.
	DynamicType (const DynamicType &prototype)
virtual	~DynamicType ()
virtual const char *	GetClassName () const =0
	Return the class name.
void	CopyInit (const DynamicType &dt)
	This method allows custom code for the copy-constructor of a dynamic type, since the copy-constructor is macro expanded and can not be overwritted.
bool	UpdateData ()
	Method used to resize the data space of the dynamic type, necessary when some AddXXX() / RemoveXXX() (where XXX is an attribute name) has been done.
unsigned	GetNDynamicAttributes () const
const char *	GetDynamicAttributeName (unsigned i)
virtual const std::type_info &	GetTypeId (unsigned i) const =0
bool	AttributeIsComponent (unsigned i) const
bool	AttributeIsDynamictype (unsigned i) const
bool	IsAttributeInstantiated (unsigned i) const
const void *	GetAttributeAsVoidPtr (unsigned i) const
const Component *	GetAttributeAsComponent (unsigned i) const
Component *	GetAttributeAsComponent (unsigned i)
void	FullfilsInvariant () const
virtual Component *	DeepCopy () const
void	Debug () const
virtual void	StoreOn (CLAM::Storage &storage) const
	Stores component's subitems on the given Storage.
virtual void	LoadFrom (CLAM::Storage &storage)
	Loads component's subitems from the given Storage.
Public Member Functions inherited from CLAM::Component
virtual	~Component ()

Additional Inherited Members
Protected Member Functions inherited from CLAM::DescriptorTmpl< abs >
void	InitStats (DataArray *pData)
Protected Attributes inherited from CLAM::DescriptorTmpl< abs >
StatsTmpl< abs > *	mpStats

Detailed Description

Definition at line 38 of file AudioDescriptors.hxx.

Constructor & Destructor Documentation

CLAM::AudioDescriptors::AudioDescriptors ( Audio * pAudio )

Definition at line 34 of file AudioDescriptors.cxx.

CLAM::AudioDescriptors::AudioDescriptors ( TData initVal )

Definition at line 40 of file AudioDescriptors.cxx.

References CLAM::DynamicType::UpdateData().

Member Function Documentation

void CLAM::AudioDescriptors::ConcreteCompute ( )

virtual

Implements CLAM::DescriptorTmpl< abs >.

Definition at line 77 of file AudioDescriptors.cxx.

References CLAM::StatsTmpl< abs, T, U, initOrder >::GetCentroid(), CLAM::StatsTmpl< abs, T, U, initOrder >::GetEnergy(), CLAM::StatsTmpl< abs, T, U, initOrder >::GetMean(), CLAM::StatsTmpl< abs, T, U, initOrder >::GetVariance(), and CLAM::DescriptorTmpl< abs >::mpStats.

CLAM::AudioDescriptors::DYN_ATTRIBUTE	(	0	,
		public	,
		TData	,
		Mean
	)

The mean value of the absolute value of the audio samples amplitude.

The result is in signal units.

See also:: Stats::GetMean

CLAM::AudioDescriptors::DYN_ATTRIBUTE	(	1	,
		public	,
		TData	,
		Variance
	)

The variance of audio samples amplitude.

The result is in signal difference squared units.

See also:: Stats::GetVariance

CLAM::AudioDescriptors::DYN_ATTRIBUTE	(	2	,
		public	,
		TData	,
		TemporalCentroid
	)

The temporal centroid is time where signal energy is "concentrated".

For a "silence" signal the centroid will be placed in the middle of the signal. It is computed by computing the statistical centroid over the absolute value of the signal. Measured in seconds.

See also:: Stats::GetCentroid

CLAM::AudioDescriptors::DYN_ATTRIBUTE	(	3	,
		public	,
		TData	,
		LogAttackTime
	)

The log-attack time is the (base 10) logarithm of the rise time.

For a silent signal, log-attack time is -5. Measured in log10(seconds).

CLAM::AudioDescriptors::DYN_ATTRIBUTE	(	4	,
		public	,
		TData	,
		Energy
	)

The squared sum of audio samples amplitudes.

This measure is not limited to the range [0,1]. Measured in squared signal units.

See also:: Stats::GetEnergy

CLAM::AudioDescriptors::DYN_ATTRIBUTE	(	5	,
		public	,
		TData	,
		ZeroCrossingRate
	)

The zero-crossing rate is a measure of the number of time the signal value cross the zero axe, averaged over the whole signal.

Measured in crossings/second.

CLAM::AudioDescriptors::DYN_ATTRIBUTE	(	6	,
		public	,
		TData	,
		RiseTime
	)

The rise time is the time duration between the signal reached 2% of it maximum value to the time it reaches 80% of its maximum value.

For a silent signal, rise time is 0. Measured in seconds.

CLAM::AudioDescriptors::DYN_ATTRIBUTE	(	7	,
		public	,
		TData	,
		Decrease
	)

The temporal decrease is a measure of the amount of decrease in the signal energy.

Measured in dB per seconds??

CLAM::AudioDescriptors::DYNAMIC_TYPE_USING_INTERFACE	(	AudioDescriptors	,
		8	,
		DescriptorAbs
	)

const Audio * CLAM::AudioDescriptors::GetpAudio ( ) const

Definition at line 64 of file AudioDescriptors.cxx.

void CLAM::AudioDescriptors::SetpAudio ( Audio * pAudio )

Definition at line 70 of file AudioDescriptors.cxx.

References CLAM::DescriptorTmpl< abs >::InitStats().

The documentation for this class was generated from the following files:

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation