.

providers/tts.py

@@ -119,11 +119,15 @@ class ElevenLabsTTS(BaseTTS):
             str(output_format or os.getenv("ELEVENLABS_TTS_OUTPUT_FORMAT", "pcm_16000")).strip().lower()
             or "pcm_16000"
         )
+        requested_sample_rate_hz = _sample_rate_from_pcm_format(requested_output_format)
         self._target_sample_rate_hz = int(
             target_sample_rate_hz
             if target_sample_rate_hz is not None
-            else (_sample_rate_from_pcm_format(requested_output_format) or 16000)
+            else (requested_sample_rate_hz or 16000)
         )
+        if self._target_sample_rate_hz == 8000:
+            LOGGER.warning("ElevenLabs TTS target sample rate 8000Hz is disabled; using 16000Hz")
+            self._target_sample_rate_hz = 16000
         self._output_format = self._resolve_provider_output_format(
             requested_output_format=requested_output_format,
             target_sample_rate_hz=self._target_sample_rate_hz,
@@ -381,8 +385,7 @@ class ElevenLabsTTS(BaseTTS):
         normalized = requested_output_format.strip().lower() or "pcm_16000"
         if normalized == "pcm_8000":
             LOGGER.warning(
-                "ElevenLabs TTS does not provide reliable PCM16 8kHz streaming; requesting pcm_16000 "
-                "and resampling to %sHz locally",
+                "ElevenLabs TTS PCM16 8kHz output is disabled; requesting pcm_16000 for %sHz target",
                 target_sample_rate_hz,
             )
             return "pcm_16000"