ArSpeechSynth Class Reference

Abstract interface to speech synthesis. More...

#include <ArSpeech.h>

List of all members.

Public Member Functions
	ArSpeechSynth ()
ArRetFunctorC< bool, ArSpeechSynth > *	getInitCallback ()
ArFunctorC< ArSpeechSynth > *	getInterruptCallback ()
ArRetFunctor2C< bool, ArSpeechSynth, const char *, const char * > *	getSpeakCallback (void)
virtual bool	init (void)=0
virtual void	interrupt ()=0
void	setAudioCallback (ArRetFunctor2< bool, ArTypes::Byte2 *, int > *cb)
virtual void	setAudioSampleRate (int rate)=0
virtual bool	speak (const char *str, const char *params=0)=0
virtual bool	speakf (const char *fmt,...)=0
Protected Attributes
ArRetFunctor2< bool, ArTypes::Byte2 *, int > *	myAudioPlaybackCB
	If set, send audio to this callback instead of playing it directly.
ArRetFunctorC< bool, ArSpeechSynth >	myInitCB
ArFunctorC< ArSpeechSynth >	myInterruptCB
ArRetFunctor2C< bool, ArSpeechSynth, const char *, const char * >	mySpeakCB

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Detailed Description

Abstract interface to speech synthesis.

This class defines the abstract interface for speech synthesers used with Aria. Implementations are provided in the seperate ArSpeechSynth_Cepstral and ArSpeechSynth_Festival libraries, and ArCepstral and ArFestival classes respectively. When one of these libraries is loaded at program run time (or if they are statically linked), it will set the factory callback used by newDefaultSpeechSynthesizer(). This class provides a common-denominator interface. Implementations (especially ArCepstral) may support more features, or behave differently refer to their documentation for more information.

Definition at line 48 of file ArSpeech.h.

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Constructor & Destructor Documentation

ArSpeechSynth::ArSpeechSynth (   )

Don't forget to call this from derived classes. Definition at line 32 of file ArSpeech.cpp.

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Member Function Documentation

ArRetFunctorC< bool, ArSpeechSynth > * ArSpeechSynth::getInitCallback (   )

Returns: a functor for use with ArSoundsQueue Definition at line 44 of file ArSpeech.cpp.

ArFunctorC< ArSpeechSynth > * ArSpeechSynth::getInterruptCallback (   )

Returns: a functor for interrupt() Definition at line 55 of file ArSpeech.cpp.

ArRetFunctor2C< bool, ArSpeechSynth, const char *, const char * > * ArSpeechSynth::getSpeakCallback (  void   )

Returns: a functor for use with ArSoundsQueue Definition at line 49 of file ArSpeech.cpp.

virtual bool ArSpeechSynth::init (  void   )  [pure virtual]

Perform synthesizer initialization, if neccesary. You must call this method.

virtual void ArSpeechSynth::interrupt (   )  [pure virtual]

If any speech is currently ongoing, interrupt it.

void ArSpeechSynth::setAudioCallback (  ArRetFunctor2< bool, ArTypes::Byte2 *, int > *  cb  )

Instead of playing synthesized audio using the synthesizer's internal audio playback, call the given callback when a chunk of audio has been synthesized. Audio is passed to the callback in the first parameter as signed 16-bit samples (PCM16). The sample rate is 16kHz but may be changed with setAudioSampleRate(). The second parameter is the number of samples. The return value from the callback is ignored. Definition at line 60 of file ArSpeech.cpp. References myAudioPlaybackCB.

virtual void ArSpeechSynth::setAudioSampleRate (  int  rate  )  [pure virtual]

Change audio sample rate (Hz). Normal rate is 16000 Hz. Suggested values are 8000, 16000, or 44400

virtual bool ArSpeechSynth::speak (  const char *  str, const char *  params = 0 )  [pure virtual]

Speak the given text. Parameters: str  The text to speak. params  Voice selection criteria for Cepstral, if given.

virtual bool ArSpeechSynth::speakf (  const char *  fmt,   ... )  [pure virtual]

Speaks the given string, taking varargs and a format string (like printf)

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

• ArSpeech.h
• ArSpeech.cpp

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