diff --git a/changelog/3991.changed.md b/changelog/3991.changed.md
new file mode 100644
index 000000000..5767dc8aa
--- /dev/null
+++ b/changelog/3991.changed.md
@@ -0,0 +1 @@
+- `OpenAIRealtimeSTTService`'s `noise_reduction` parameter is now part of `OpenAIRealtimeSTTSettings`, making it runtime-updatable via `STTUpdateSettingsFrame`. The direct `noise_reduction` init argument is deprecated as of 0.0.106.
diff --git a/src/pipecat/services/camb/tts.py b/src/pipecat/services/camb/tts.py
index 9918b2320..f458fa2e4 100644
--- a/src/pipecat/services/camb/tts.py
+++ b/src/pipecat/services/camb/tts.py
@@ -158,13 +158,20 @@ class CambTTSService(TTSService):
     Example::
 
         # Basic usage with mars-flash (fast)
-        tts = CambTTSService(api_key="your-api-key", model="mars-flash")
+        tts = CambTTSService(
+            api_key="your-api-key",
+            settings=CambTTSService.Settings(
+                model="mars-flash"
+            )
+        )
 
         # High quality with mars-pro
         tts = CambTTSService(
             api_key="your-api-key",
-            voice_id=12345,
-            model="mars-pro",
+            settings=CambTTSService.Settings(
+                voice=12345,
+                model="mars-pro",
+            )
         )
     """
 
diff --git a/src/pipecat/services/deepgram/sagemaker/stt.py b/src/pipecat/services/deepgram/sagemaker/stt.py
index 812a2701e..f6093a630 100644
--- a/src/pipecat/services/deepgram/sagemaker/stt.py
+++ b/src/pipecat/services/deepgram/sagemaker/stt.py
@@ -69,7 +69,7 @@ class DeepgramSageMakerSTTService(STTService):
         stt = DeepgramSageMakerSTTService(
             endpoint_name="my-deepgram-endpoint",
             region="us-east-2",
-            settings=DeepgramSageMakerSTTSettings(
+            settings=DeepgramSageMakerSTTService.Settings(
                 model="nova-3",
                 language="en",
                 interim_results=True,
diff --git a/src/pipecat/services/deepgram/sagemaker/tts.py b/src/pipecat/services/deepgram/sagemaker/tts.py
index a40f56713..d315b9e01 100644
--- a/src/pipecat/services/deepgram/sagemaker/tts.py
+++ b/src/pipecat/services/deepgram/sagemaker/tts.py
@@ -63,7 +63,9 @@ class DeepgramSageMakerTTSService(TTSService):
         tts = DeepgramSageMakerTTSService(
             endpoint_name="my-deepgram-tts-endpoint",
             region="us-east-2",
-            voice="aura-2-helena-en",
+            settings=DeepgramSageMakerTTSService.Settings(
+                voice="aura-2-helena-en",
+            )
         )
     """
 
diff --git a/src/pipecat/services/google/tts.py b/src/pipecat/services/google/tts.py
index a9394028b..9d92c91ea 100644
--- a/src/pipecat/services/google/tts.py
+++ b/src/pipecat/services/google/tts.py
@@ -1014,8 +1014,8 @@ class GoogleTTSService(GoogleBaseTTSService):
 
         tts = GoogleTTSService(
             credentials_path="/path/to/service-account.json",
-            voice_id="en-US-Chirp3-HD-Charon",
-            params=GoogleTTSService.InputParams(
+            settings=GoogleTTSService.Settings(
+                voice="en-US-Chirp3-HD-Charon",
                 language=Language.EN_US,
             )
         )
@@ -1191,9 +1191,9 @@ class GeminiTTSService(GoogleBaseTTSService):
 
         tts = GeminiTTSService(
             credentials_path="/path/to/service-account.json",
-            model="gemini-2.5-flash-tts",
-            voice_id="Kore",
-            params=GeminiTTSService.InputParams(
+            settings=GeminiTTSService.Settings(
+                model="gemini-2.5-flash-tts",
+                voice="Kore",
                 language=Language.EN_US,
                 prompt="Say this in a friendly and helpful tone"
             )
diff --git a/src/pipecat/services/openai/stt.py b/src/pipecat/services/openai/stt.py
index e2f9ec0ee..473b23637 100644
--- a/src/pipecat/services/openai/stt.py
+++ b/src/pipecat/services/openai/stt.py
@@ -187,9 +187,15 @@ class OpenAIRealtimeSTTSettings(STTSettings):
 
     Parameters:
         prompt: Optional prompt text to guide transcription style.
+        noise_reduction: Noise reduction mode. ``"near_field"`` for close
+            microphones, ``"far_field"`` for distant microphones, or ``None``
+            to disable.
     """
 
     prompt: str | None | _NotGiven = field(default_factory=lambda: NOT_GIVEN)
+    noise_reduction: Literal["near_field", "far_field"] | None | _NotGiven = field(
+        default_factory=lambda: NOT_GIVEN
+    )
 
 
 class OpenAIRealtimeSTTService(WebsocketSTTService):
@@ -220,8 +226,10 @@ class OpenAIRealtimeSTTService(WebsocketSTTService):
 
         stt = OpenAIRealtimeSTTService(
             api_key="sk-...",
-            model="gpt-4o-transcribe",
-            noise_reduction="near_field",
+            settings=OpenAIRealtimeSTTService.Settings(
+                model="gpt-4o-transcribe",
+                noise_reduction="near_field",
+            ),
         )
     """
 
@@ -274,6 +282,9 @@ class OpenAIRealtimeSTTService(WebsocketSTTService):
             noise_reduction: Noise reduction mode. ``"near_field"`` for
                 close microphones, ``"far_field"`` for distant
                 microphones, or ``None`` to disable.
+
+                .. deprecated:: 0.0.106
+                    Use ``settings=OpenAIRealtimeSTTSettings(noise_reduction=...)`` instead.
             should_interrupt: Whether to interrupt bot output when
                 speech is detected by server-side VAD. Only applies when
                 turn detection is enabled. Defaults to True.
@@ -295,6 +306,7 @@ class OpenAIRealtimeSTTService(WebsocketSTTService):
             model="gpt-4o-transcribe",
             language=Language.EN,
             prompt=None,
+            noise_reduction=None,
         )
 
         # --- 2. Deprecated direct-arg overrides ---
@@ -307,6 +319,9 @@ class OpenAIRealtimeSTTService(WebsocketSTTService):
         if prompt is not None:
             _warn_deprecated_param("prompt", OpenAIRealtimeSTTSettings, "prompt")
             default_settings.prompt = prompt
+        if noise_reduction is not None:
+            _warn_deprecated_param("noise_reduction", OpenAIRealtimeSTTSettings, "noise_reduction")
+            default_settings.noise_reduction = noise_reduction
 
         # --- 3. (no params object for this service) ---
 
@@ -324,7 +339,6 @@ class OpenAIRealtimeSTTService(WebsocketSTTService):
         self._base_url = base_url
 
         self._turn_detection = turn_detection
-        self._noise_reduction = noise_reduction
         self._should_interrupt = should_interrupt
 
         self._receive_task = None
@@ -544,9 +558,9 @@ class OpenAIRealtimeSTTService(WebsocketSTTService):
             input_audio["turn_detection"] = self._turn_detection
 
         # Noise reduction
-        if self._noise_reduction:
+        if self._settings.noise_reduction:
             input_audio["noise_reduction"] = {
-                "type": self._noise_reduction,
+                "type": self._settings.noise_reduction,
             }
 
         await self._ws_send(
diff --git a/src/pipecat/services/sarvam/tts.py b/src/pipecat/services/sarvam/tts.py
index 639a860ac..0d6a872eb 100644
--- a/src/pipecat/services/sarvam/tts.py
+++ b/src/pipecat/services/sarvam/tts.py
@@ -326,28 +326,28 @@ class SarvamHttpTTSService(TTSService):
         # Using bulbul:v2 (default)
         tts = SarvamHttpTTSService(
             api_key="your-api-key",
-            voice_id="anushka",
-            model="bulbul:v2",
             aiohttp_session=session,
-            params=SarvamHttpTTSService.InputParams(
+            settings=SarvamHttpTTSService.Settings(
+                voice="anushka",
+                model="bulbul:v2",
                 language=Language.HI,
                 pitch=0.1,
                 pace=1.2,
-                loudness=1.5
-            )
+                loudness=1.5,
+            ),
         )
 
         # Using bulbul:v3-beta with temperature control
         tts_v3 = SarvamHttpTTSService(
             api_key="your-api-key",
-            voice_id="aditya",  # Use v3 speaker
-            model="bulbul:v3-beta",
             aiohttp_session=session,
-            params=SarvamHttpTTSService.InputParams(
+            settings=SarvamHttpTTSService.Settings(
+                voice="aditya",  # Use v3 speaker
+                model="bulbul:v3-beta",
                 language=Language.HI,
                 pace=1.2,  # Range: 0.5-2.0 for v3
-                temperature=0.8
-            )
+                temperature=0.8,
+            ),
         )
     """
 
@@ -693,26 +693,26 @@ class SarvamTTSService(InterruptibleTTSService):
         # Using bulbul:v2 (default)
         tts = SarvamTTSService(
             api_key="your-api-key",
-            voice_id="anushka",
-            model="bulbul:v2",
-            params=SarvamTTSService.InputParams(
+            settings=SarvamTTSService.Settings(
+                voice="anushka",
+                model="bulbul:v2",
                 language=Language.HI,
                 pitch=0.1,
                 pace=1.2,
-                loudness=1.5
-            )
+                loudness=1.5,
+            ),
         )
 
         # Using bulbul:v3-beta with temperature control
         tts_v3 = SarvamTTSService(
             api_key="your-api-key",
-            voice_id="aditya",  # Use v3 speaker
-            model="bulbul:v3-beta",
-            params=SarvamTTSService.InputParams(
+            settings=SarvamTTSService.Settings(
+                voice="aditya",  # Use v3 speaker
+                model="bulbul:v3-beta",
                 language=Language.HI,
                 pace=1.2,  # Range: 0.5-2.0 for v3
-                temperature=0.8
-            )
+                temperature=0.8,
+            ),
         )
 
     See https://docs.sarvam.ai/api-reference-docs/text-to-speech/stream for API details.