Update streaming_speech_client.py to solve Qwen/Qwen3-TTS-12Hz-0.6B-CustomVoice voice problem (#3380)

Signed-off-by: Jie Liu <33612777+keeper-jie@users.noreply.github.com>
Signed-off-by: Yueqian Lin <linyueqian@outlook.com>
Co-authored-by: Yueqian Lin <linyueqian@outlook.com>

examples/online_serving/text_to_speech/qwen3_tts/streaming_speech_client.py

@@ -7,6 +7,12 @@ Usage:
     # Send full text at once
     python streaming_speech_client.py --text "Hello world. How are you? I am fine."
 
+    # Pick a built-in speaker for CustomVoice models
+    python streaming_speech_client.py \
+        --text "打开电子枪，关闭扫描，切换到低倍模式。" \
+        --speaker "Serena" \
+        --language "Chinese"
+
     # Simulate STT: send text word-by-word with delay
     python streaming_speech_client.py \
         --text "Hello world. How are you? I am fine." \
@@ -211,7 +217,9 @@ def main():
 
     args = parser.parse_args()
 
-    # Build session config (only include non-None values)
+    # Build session config (only include non-None values).
+    # Server canonical field is `voice`; `speaker` is accepted as an alias
+    # (see StreamingSpeechSessionConfig.voice in protocol/audio.py).
     config = {}
     for key in [
         "model",

vllm_omni/entrypoints/openai/protocol/audio.py

@@ -196,7 +196,7 @@ class SpeechBatchItem(BaseModel):
     all other fields override the batch-level defaults when set."""
 
     input: str
-    voice: str | None = None
+    voice: str | None = Field(default=None, validation_alias=AliasChoices("voice", "speaker"))
     instructions: str | None = None
     response_format: Literal["wav", "pcm", "flac", "mp3", "aac", "opus"] | None = None
     speed: float | None = Field(default=None, ge=0.25, le=4.0)
@@ -215,7 +215,7 @@ class BatchSpeechRequest(BaseModel):
 
     model: str | None = None
     items: list[SpeechBatchItem] = Field(..., min_length=1)
-    voice: str | None = None
+    voice: str | None = Field(default=None, validation_alias=AliasChoices("voice", "speaker"))
     instructions: str | None = None
     response_format: Literal["wav", "pcm", "flac", "mp3", "aac", "opus"] = "wav"
     speed: float | None = Field(default=1.0, ge=0.25, le=4.0)
@@ -248,7 +248,7 @@ class StreamingSpeechSessionConfig(BaseModel):
     """Configuration sent as the first WebSocket message for streaming TTS."""
 
     model: str | None = None
-    voice: str | None = None
+    voice: str | None = Field(default=None, validation_alias=AliasChoices("voice", "speaker"))
     task_type: Literal["CustomVoice", "VoiceDesign", "Base"] | None = None
     language: str | None = None
     instructions: str | None = None