Package edu.tufts.hrilab.tts.cartesia

Class CartesiaSynthesisBackend

java.lang.Object

edu.tufts.hrilab.tts.cartesia.CartesiaSynthesisBackend

All Implemented Interfaces:

SynthesisBackend

public class CartesiaSynthesisBackend
extends Object
implements SynthesisBackend

Cartesia cloud TTS over a shared websocket. Phrases for one utterance are chained on a context_id with continue=true; the server streams PCM chunks back and signals done after the final continue=false send.

Nested Class Summary

Nested classes/interfaces inherited from interface edu.tufts.hrilab.tts.SynthesisBackend

SynthesisBackend.Engine, SynthesisBackend.Session, SynthesisBackend.Sink

Constructor Summary

Constructors

Constructor	Description
CartesiaSynthesisBackend(String voiceId, String model, String language, String speed)

Method Summary

Modifier and Type	Method	Description
int	getSampleRate()	Output PCM rate (s16le mono), fixed for the backend's lifetime.
void	init()	Load credentials and prewarm the transport.
boolean	isReady()	False if the backend cannot synthesize at all (e.g.
SynthesisBackend.Session	openSession(SynthesisBackend.Sink sink)	Begin one utterance's synthesis.
void	shutdown()	Release transport resources.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

CartesiaSynthesisBackend

public CartesiaSynthesisBackend(String voiceId,
 String model,
 String language,
 String speed)

Method Details

init

public void init()

Description copied from interface: SynthesisBackend

Load credentials and prewarm the transport. Called once from component init.

Specified by:

init in interface SynthesisBackend

isReady

public boolean isReady()

Description copied from interface: SynthesisBackend

False if the backend cannot synthesize at all (e.g. missing credentials).

Specified by:

isReady in interface SynthesisBackend

getSampleRate

public int getSampleRate()

Description copied from interface: SynthesisBackend

Output PCM rate (s16le mono), fixed for the backend's lifetime. Valid after init.

Specified by:

getSampleRate in interface SynthesisBackend

openSession

public SynthesisBackend.Session openSession(SynthesisBackend.Sink sink)

Description copied from interface: SynthesisBackend

Begin one utterance's synthesis. Never returns null when isReady.

Specified by:

openSession in interface SynthesisBackend

shutdown

public void shutdown()

Description copied from interface: SynthesisBackend

Release transport resources. Called from shutdownComponent.

Specified by:

shutdown in interface SynthesisBackend