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Thu Nguyen
2025-10-31 09:53:47 +07:00
parent 057e0c3973
commit 6ade5617fb
1 changed files with 29 additions and 14 deletions
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43
src/pipecat/services/google/tts.py
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@@ -249,7 +249,7 @@ class GoogleHttpTTSService(TTSService):
Parameters:
pitch: Voice pitch adjustment (e.g., "+2st", "-50%").
rate: Speaking rate adjustment (e.g., "slow", "fast", "125%"). Used for SSML prosody tags (non-Chirp voices).
speaking_rate: Speaking rate for AudioConfig (Chirp/Journey voices). Range [0.25, 4.0].
speaking_rate: Speaking rate for AudioConfig (Chirp/Journey voices). Range [0.25, 2.0].
volume: Volume adjustment (e.g., "loud", "soft", "+6dB").
emphasis: Emphasis level for the text.
language: Language for synthesis. Defaults to English.
@@ -371,11 +371,11 @@ class GoogleHttpTTSService(TTSService):
"""
if "speaking_rate" in settings:
rate_value = float(settings["speaking_rate"])
if 0.25 <= rate_value <= 4.0:
if 0.25 <= rate_value <= 2.0:
self._settings["speaking_rate"] = rate_value
else:
logger.warning(
f"Invalid speaking_rate value: {rate_value}. Must be between 0.25 and 4.0"
f"Invalid speaking_rate value: {rate_value}. Must be between 0.25 and 2.0"
)
await super()._update_settings(settings)
@@ -455,18 +455,17 @@ class GoogleHttpTTSService(TTSService):
voice = texttospeech_v1.VoiceSelectionParams(
language_code=self._settings["language"], name=self._voice_id
)
# Build audio config with conditional speaking_rate
audio_config_params = {
"audio_encoding": texttospeech_v1.AudioEncoding.LINEAR16,
"sample_rate_hertz": self.sample_rate,
}
# For Chirp and Journey voices, include speaking_rate in AudioConfig
if (is_chirp_voice or is_journey_voice) and self._settings["speaking_rate"] is not None:
audio_config = texttospeech_v1.AudioConfig(
audio_encoding=texttospeech_v1.AudioEncoding.LINEAR16,
sample_rate_hertz=self.sample_rate,
speaking_rate=self._settings["speaking_rate"],
)
else:
audio_config = texttospeech_v1.AudioConfig(
audio_encoding=texttospeech_v1.AudioEncoding.LINEAR16,
sample_rate_hertz=self.sample_rate,
)
audio_config_params["speaking_rate"] = self._settings["speaking_rate"]
audio_config = texttospeech_v1.AudioConfig(**audio_config_params)
request = texttospeech_v1.SynthesizeSpeechRequest(
input=synthesis_input, voice=voice, audio_config=audio_config
@@ -527,7 +526,7 @@ class GoogleTTSService(TTSService):
Parameters:
language: Language for synthesis. Defaults to English.
speaking_rate: The speaking rate, in the range [0.25, 4.0].
speaking_rate: The speaking rate, in the range [0.25, 2.0].
"""
language: Optional[Language] = Language.EN
@@ -618,6 +617,22 @@ class GoogleTTSService(TTSService):
"""
return language_to_google_tts_language(language)
async def _update_settings(self, settings: Mapping[str, Any]):
"""Override to handle speaking_rate updates for streaming API.
Args:
settings: Dictionary of settings to update. Can include 'speaking_rate' (float)
"""
if "speaking_rate" in settings:
rate_value = float(settings["speaking_rate"])
if 0.25 <= rate_value <= 2.0:
self._settings["speaking_rate"] = rate_value
else:
logger.warning(
f"Invalid speaking_rate value: {rate_value}. Must be between 0.25 and 2.0"
)
await super()._update_settings(settings)
@traced_tts
async def run_tts(self, text: str) -> AsyncGenerator[Frame, None]:
"""Generate streaming speech from text using Google's streaming API.