Add a virtual class for "source" features such as MFCC or PLP or pitch features. More...

Inheritance diagram for OnlineBaseFeature:

Collaboration diagram for OnlineBaseFeature:

Public Member Functions
virtual void	AcceptWaveform (BaseFloat sampling_rate, const VectorBase< BaseFloat > &waveform)=0
	This would be called from the application, when you get more wave data. More...

virtual void	InputFinished ()=0
	InputFinished() tells the class you won't be providing any more waveform. More...

Public Member Functions inherited from OnlineFeatureInterface
virtual int32	Dim () const =0

virtual int32	NumFramesReady () const =0
	returns the feature dimension. More...

virtual bool	IsLastFrame (int32 frame) const =0
	Returns true if this is the last frame. More...

virtual void	GetFrame (int32 frame, VectorBase< BaseFloat > *feat)=0
	Gets the feature vector for this frame. More...

virtual void	GetFrames (const std::vector< int32 > &frames, MatrixBase< BaseFloat > *feats)
	This is like GetFrame() but for a collection of frames. More...

virtual BaseFloat	FrameShiftInSeconds () const =0

virtual	~OnlineFeatureInterface ()
	Virtual destructor. More...

Detailed Description

Add a virtual class for "source" features such as MFCC or PLP or pitch features.

Definition at line 106 of file online-feature-itf.h.

Member Function Documentation

virtual void AcceptWaveform	(	BaseFloat	sampling_rate,
		const VectorBase< BaseFloat > &	waveform
	)

pure virtual

This would be called from the application, when you get more wave data.

Note: the sampling_rate is typically only provided so the code can assert that it matches the sampling rate expected in the options.

virtual void InputFinished ( )

pure virtual

InputFinished() tells the class you won't be providing any more waveform.

This will help flush out the last few frames of delta or LDA features (it will typically affect the return value of IsLastFrame.

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