Add rate to Edge TTS

README.md

@@ -419,7 +419,7 @@ WAV audio file.
 `POST /api/edge-tts/generate`
 #### **Input**
 ```
-{ "text": "Text to narrate", "voice": "af-ZA-AdriNeural" }
+{ "text": "Text to narrate", "voice": "af-ZA-AdriNeural", "rate": 0 }
 ```
 #### **Output**
 MP3 audio file.

server.py

@@ -676,10 +676,14 @@ def edge_tts_generate():
         abort(400, '"text" is required')
     if "voice" not in data or not isinstance(data["voice"], str):
         abort(400, '"voice" is required')
+    if "rate" in data and isinstance(data['rate'], int):
+        rate = data['rate']
+    else:
+        rate = 0
     # Remove asterisks
     data["text"] = data["text"].replace("*", "")
     try:
-        audio = edge.generate_audio(text=data["text"], voice=data["voice"])
+        audio = edge.generate_audio(text=data["text"], voice=data["voice"], rate=rate)
         return Response(audio, mimetype="audio/mpeg")
     except Exception as e:
         print(e)

tts_edge.py

@@ -21,8 +21,10 @@ async def _async_generator_to_list(async_gen):
     return result
 
 
-def generate_audio(text: str, voice: str) -> bytes:
-    audio = edge_tts.Communicate(text, voice)
+def generate_audio(text: str, voice: str, rate: int) -> bytes:
+    sign = '+' if rate > 0 else '-'
+    rate = f'{sign}{abs(rate)}%'
+    audio = edge_tts.Communicate(text=text, voice=voice, rate=rate)
     chunks = asyncio.run(_async_generator_to_list(_iterate_chunks(audio)))
     buffer = io.BytesIO()