nsISpeechService

The main interface of a speech synthesis service.

A service’s speak method could be implemented in two ways:
1. Indirect audio - the service is responsible for outputting audio.
The service calls the nsISpeechTask.dispatch* methods directly. Starting
with dispatchStart() and ending with dispatchEnd or dispatchError().

1. Direct audio - the service provides us with PCM-16 data, and we output it.
   The service does not call the dispatch task methods directly. Instead,
   audio information is provided at setup(), and audio data is sent with
   sendAudio(). The utterance is terminated with an empty sendAudio().

Methods

speak(aText, aUri, aRate, aPitch, aTask)

Speak the given text using the voice identified byu the given uri. See
W3C Speech API spec for information about pitch and rate.
https://dvcs.w3.org/hg/speech-api/raw-file/tip/speechapi.html#utterance-attributes

Parameters

Attributes

serviceType

Constants

SERVICETYPE_DIRECT_AUDIO

SERVICETYPE_INDIRECT_AUDIO