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Set Azure TTS default prosody rate to None

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This commit is contained in:
Mark Backman
2026-01-19 09:19:57 -05:00
parent f733e77496
commit 14bd3b1b32
1 changed files with 7 additions and 4 deletions
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11
src/pipecat/services/azure/tts.py
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@@ -90,7 +90,7 @@ class AzureBaseTTSService:
emphasis: Emphasis level for speech ("strong", "moderate", "reduced"). emphasis: Emphasis level for speech ("strong", "moderate", "reduced").
language: Language for synthesis. Defaults to English (US). language: Language for synthesis. Defaults to English (US).
pitch: Voice pitch adjustment (e.g., "+10%", "-5Hz", "high"). pitch: Voice pitch adjustment (e.g., "+10%", "-5Hz", "high").
rate: Speech rate multiplier. Defaults to "1.05". rate: Speech rate adjustment (e.g., "1.0", "1.25", "slow", "fast").
role: Voice role for expression (e.g., "YoungAdultFemale"). role: Voice role for expression (e.g., "YoungAdultFemale").
style: Speaking style (e.g., "cheerful", "sad", "excited"). style: Speaking style (e.g., "cheerful", "sad", "excited").
style_degree: Intensity of the speaking style (0.01 to 2.0). style_degree: Intensity of the speaking style (0.01 to 2.0).
@@ -100,7 +100,7 @@ class AzureBaseTTSService:
emphasis: Optional[str] = None emphasis: Optional[str] = None
language: Optional[Language] = Language.EN_US language: Optional[Language] = Language.EN_US
pitch: Optional[str] = None pitch: Optional[str] = None
rate: Optional[str] = "1.05" rate: Optional[str] = None
role: Optional[str] = None role: Optional[str] = None
style: Optional[str] = None style: Optional[str] = None
style_degree: Optional[str] = None style_degree: Optional[str] = None
@@ -185,7 +185,9 @@ class AzureBaseTTSService:
if self._settings["volume"]: if self._settings["volume"]:
prosody_attrs.append(f"volume='{self._settings['volume']}'") prosody_attrs.append(f"volume='{self._settings['volume']}'")
ssml += f"<prosody {' '.join(prosody_attrs)}>" # Only wrap in prosody tag if there are prosody attributes
if prosody_attrs:
ssml += f"<prosody {' '.join(prosody_attrs)}>"
if self._settings["emphasis"]: if self._settings["emphasis"]:
ssml += f"<emphasis level='{self._settings['emphasis']}'>" ssml += f"<emphasis level='{self._settings['emphasis']}'>"
@@ -195,7 +197,8 @@ class AzureBaseTTSService:
if self._settings["emphasis"]: if self._settings["emphasis"]:
ssml += "</emphasis>" ssml += "</emphasis>"
ssml += "</prosody>" if prosody_attrs:
ssml += "</prosody>"
if self._settings["style"]: if self._settings["style"]:
ssml += "</mstts:express-as>" ssml += "</mstts:express-as>"