fix: add pace option in sarvam tts config (#447)

* fix: add pace option in sarvam tts config

* fix: generate client

api/services/configuration/registry.py

@@ -1001,6 +1001,12 @@ class SarvamTTSConfiguration(BaseTTSConfiguration):
         description="BCP-47 Indian-language code (e.g. hi-IN, en-IN).",
         json_schema_extra={"examples": SARVAM_LANGUAGES},
     )
+    speed: float = Field(
+        default=1.0,
+        ge=0.5,
+        le=2.0,
+        description="Speech speed multiplier.",
+    )
 
 
 CAMB_TTS_MODELS = ["mars-flash", "mars-pro", "mars-instruct"]

api/services/pipecat/service_factory.py

@@ -535,13 +535,17 @@ def create_tts_service(
         pipecat_language = language_mapping.get(language, Language.HI)
 
         voice = getattr(user_config.tts, "voice", None) or "anushka"
+        speed = getattr(user_config.tts, "speed", None)
+        settings_kwargs = {
+            "model": user_config.tts.model,
+            "voice": voice,
+            "language": pipecat_language,
+        }
+        if speed and speed != 1.0:
+            settings_kwargs["pace"] = speed
         return SarvamTTSService(
             api_key=user_config.tts.api_key,
-            settings=SarvamTTSSettings(
-                model=user_config.tts.model,
-                voice=voice,
-                language=pipecat_language,
-            ),
+            settings=SarvamTTSSettings(**settings_kwargs),
             text_filters=[xml_function_tag_filter],
             skip_aggregator_types=["recording_router", "recording"],
             silence_time_s=1.0,

api/tests/test_sarvam_service_factory.py

@@ -7,6 +7,7 @@ from pipecat.transcriptions.language import Language
 
 from api.services.configuration.registry import (
     SarvamLLMConfiguration,
+    SarvamTTSConfiguration,
     ServiceProviders,
 )
 from api.services.pipecat.audio_config import AudioConfig
@@ -14,6 +15,7 @@ from api.services.pipecat.service_factory import (
     create_llm_service,
     create_llm_service_from_provider,
     create_stt_service,
+    create_tts_service,
 )
 
 
@@ -112,3 +114,41 @@ class TestSarvamSTTServiceFactory:
 
         kwargs = mock_service.call_args.kwargs
         assert kwargs["settings"].language == expected_language
+
+
+class TestSarvamTTSServiceFactory:
+    def test_sarvam_tts_configuration_defaults(self):
+        config = SarvamTTSConfiguration(api_key="test-key")
+
+        assert config.provider == ServiceProviders.SARVAM
+        assert config.model == "bulbul:v2"
+        assert config.voice == "anushka"
+        assert config.language == "hi-IN"
+        assert config.speed == 1.0
+
+    def test_create_sarvam_tts_service_maps_speed_to_pace(self):
+        user_config = SimpleNamespace(
+            tts=SimpleNamespace(
+                provider=ServiceProviders.SARVAM.value,
+                api_key="test-key",
+                model="bulbul:v2",
+                voice="anushka",
+                language="hi-IN",
+                speed=1.25,
+            )
+        )
+        audio_config = AudioConfig(
+            transport_in_sample_rate=16000, transport_out_sample_rate=16000
+        )
+
+        with patch(
+            "api.services.pipecat.service_factory.SarvamTTSService"
+        ) as mock_service:
+            create_tts_service(user_config, audio_config)
+
+        kwargs = mock_service.call_args.kwargs
+        assert kwargs["api_key"] == "test-key"
+        assert kwargs["settings"].model == "bulbul:v2"
+        assert kwargs["settings"].voice == "anushka"
+        assert kwargs["settings"].language == Language.HI
+        assert kwargs["settings"].pace == 1.25

ui/src/client/types.gen.ts

@@ -4750,6 +4750,12 @@ export type SarvamTtsConfiguration = {
      * BCP-47 Indian-language code (e.g. hi-IN, en-IN).
      */
     language?: string;
+    /**
+     * Speed
+     *
+     * Speech speed multiplier.
+     */
+    speed?: number;
 };
 
 /**