From fc78e6fc5a0062a266ec122a0e52297cb3a416da Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Aleix=20Conchillo=20Flaqu=C3=A9?= <aleix@daily.co>
Date: Thu, 20 Mar 2025 19:13:23 -0700
Subject: [PATCH] ElevenLabs: add support for a sample rate of 8000

---
 CHANGELOG.md                       | 4 ++++
 src/pipecat/services/elevenlabs.py | 4 +++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 701b8a81c..c79c8f3b3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Added
+
+- ElevenLabs TTS services now support a sample rate of 8000.
+
 ### Fixed
 
 - Fixed an issue in `UltravoxSTTService` that caused improper audio processing
diff --git a/src/pipecat/services/elevenlabs.py b/src/pipecat/services/elevenlabs.py
index 568b9eb64..68c71a144 100644
--- a/src/pipecat/services/elevenlabs.py
+++ b/src/pipecat/services/elevenlabs.py
@@ -102,6 +102,8 @@ def language_to_elevenlabs_language(language: Language) -> Optional[str]:
 
 def output_format_from_sample_rate(sample_rate: int) -> str:
     match sample_rate:
+        case 8000:
+            return "pcm_8000"
         case 16000:
             return "pcm_16000"
         case 22050:
@@ -113,7 +115,7 @@ def output_format_from_sample_rate(sample_rate: int) -> str:
     logger.warning(
         f"ElevenLabsTTSService: No output format available for {sample_rate} sample rate"
     )
-    return "pcm_16000"
+    return "pcm_24000"
 
 
 def build_elevenlabs_voice_settings(