diff --git a/dsLightRag/Test/Test_TTS.py b/dsLightRag/Test/Test_TTS.py
new file mode 100644
index 00000000..8f93c529
--- /dev/null
+++ b/dsLightRag/Test/Test_TTS.py
@@ -0,0 +1,100 @@
+#!/usr/bin/env python3
+import json
+import logging
+import uuid
+# pip install websockets
+import websockets
+
+from Config import Config
+from Util.TTS_Protocols import EventType, MsgType, full_client_request, receive_message
+
+logging.basicConfig(level=logging.INFO)
+logger = logging.getLogger(__name__)
+
+
+def get_resource_id(voice: str) -> str:
+    if voice.startswith("S_"):
+        return "volc.megatts.default"
+    return "volc.service_type.10029"
+
+
+text = '你好，我是火山引擎的语音合成服务。这是一个美好的旅程。' # 文本
+voice_type = 'zh_female_wanwanxiaohe_moon_bigtts'  # 湾湾小何
+encoding = 'wav'  # 输出文件编码
+endpoint = "wss://openspeech.bytedance.com/api/v3/tts/unidirectional/stream"  # WebSocket端点URL
+
+
+async def main():
+    # Connect to server
+    headers = {
+        "X-Api-App-Key": Config.HS_APP_ID,
+        "X-Api-Access-Key": Config.HS_ACCESS_TOKEN,
+        "X-Api-Resource-Id": get_resource_id(voice_type),
+        "X-Api-Connect-Id": str(uuid.uuid4()),
+    }
+
+    logger.info(f"Connecting to {endpoint} with headers: {headers}")
+    websocket = await websockets.connect(
+        endpoint, additional_headers=headers, max_size=10 * 1024 * 1024
+    )
+    logger.info(
+        f"Connected to WebSocket server, Logid: {websocket.response.headers['x-tt-logid']}",
+    )
+
+    try:
+        # Prepare request payload
+        request = {
+            "user": {
+                "uid": str(uuid.uuid4()),
+            },
+            "req_params": {
+                "speaker": voice_type,
+                "audio_params": {
+                    "format": encoding,
+                    "sample_rate": 24000,
+                    "enable_timestamp": True,
+                },
+                "text": text,
+                "additions": json.dumps(
+                    {
+                        "disable_markdown_filter": False,
+                    }
+                ),
+            },
+        }
+
+        # Send request
+        await full_client_request(websocket, json.dumps(request).encode())
+
+        # Receive audio data
+        audio_data = bytearray()
+        while True:
+            msg = await receive_message(websocket)
+
+            if msg.type == MsgType.FullServerResponse:
+                if msg.event == EventType.SessionFinished:
+                    break
+            elif msg.type == MsgType.AudioOnlyServer:
+                audio_data.extend(msg.payload)
+            else:
+                raise RuntimeError(f"TTS conversion failed: {msg}")
+
+        # Check if we received any audio data
+        if not audio_data:
+            raise RuntimeError("No audio data received")
+
+        # Save audio file
+        filename = f"{voice_type}.{encoding}"
+        with open(filename, "wb") as f:
+            f.write(audio_data)
+        logger.info(f"Audio received: {len(audio_data)}, saved to {filename}")
+
+    finally:
+        await websocket.close()
+        logger.info("Connection closed")
+
+
+if __name__ == "__main__":
+    import asyncio
+
+    asyncio.run(main())
diff --git a/dsLightRag/Test/zh_female_wanwanxiaohe_moon_bigtts.wav b/dsLightRag/Test/zh_female_wanwanxiaohe_moon_bigtts.wav
new file mode 100644
index 00000000..bad124bc
Binary files /dev/null and b/dsLightRag/Test/zh_female_wanwanxiaohe_moon_bigtts.wav differ
diff --git a/dsLightRag/Util/TTS_Protocols.py b/dsLightRag/Util/TTS_Protocols.py
new file mode 100644
index 00000000..6d76488a
--- /dev/null
+++ b/dsLightRag/Util/TTS_Protocols.py
@@ -0,0 +1,543 @@
+import io
+import logging
+import struct
+from dataclasses import dataclass
+from enum import IntEnum
+from typing import Callable, List
+
+import websockets
+
+logger = logging.getLogger(__name__)
+
+
+class MsgType(IntEnum):
+    """Message type enumeration"""
+
+    Invalid = 0
+    FullClientRequest = 0b1
+    AudioOnlyClient = 0b10
+    FullServerResponse = 0b1001
+    AudioOnlyServer = 0b1011
+    FrontEndResultServer = 0b1100
+    Error = 0b1111
+
+    # Alias
+    ServerACK = AudioOnlyServer
+
+    def __str__(self) -> str:
+        return self.name if self.name else f"MsgType({self.value})"
+
+
+class MsgTypeFlagBits(IntEnum):
+    """Message type flag bits"""
+
+    NoSeq = 0  # Non-terminal packet with no sequence
+    PositiveSeq = 0b1  # Non-terminal packet with sequence > 0
+    LastNoSeq = 0b10  # Last packet with no sequence
+    NegativeSeq = 0b11  # Last packet with sequence < 0
+    WithEvent = 0b100  # Payload contains event number (int32)
+
+
+class VersionBits(IntEnum):
+    """Version bits"""
+
+    Version1 = 1
+    Version2 = 2
+    Version3 = 3
+    Version4 = 4
+
+
+class HeaderSizeBits(IntEnum):
+    """Header size bits"""
+
+    HeaderSize4 = 1
+    HeaderSize8 = 2
+    HeaderSize12 = 3
+    HeaderSize16 = 4
+
+
+class SerializationBits(IntEnum):
+    """Serialization method bits"""
+
+    Raw = 0
+    JSON = 0b1
+    Thrift = 0b11
+    Custom = 0b1111
+
+
+class CompressionBits(IntEnum):
+    """Compression method bits"""
+
+    None_ = 0
+    Gzip = 0b1
+    Custom = 0b1111
+
+
+class EventType(IntEnum):
+    """Event type enumeration"""
+
+    None_ = 0  # Default event
+
+    # 1 ~ 49 Upstream Connection events
+    StartConnection = 1
+    StartTask = 1  # Alias of StartConnection
+    FinishConnection = 2
+    FinishTask = 2  # Alias of FinishConnection
+
+    # 50 ~ 99 Downstream Connection events
+    ConnectionStarted = 50  # Connection established successfully
+    TaskStarted = 50  # Alias of ConnectionStarted
+    ConnectionFailed = 51  # Connection failed (possibly due to authentication failure)
+    TaskFailed = 51  # Alias of ConnectionFailed
+    ConnectionFinished = 52  # Connection ended
+    TaskFinished = 52  # Alias of ConnectionFinished
+
+    # 100 ~ 149 Upstream Session events
+    StartSession = 100
+    CancelSession = 101
+    FinishSession = 102
+
+    # 150 ~ 199 Downstream Session events
+    SessionStarted = 150
+    SessionCanceled = 151
+    SessionFinished = 152
+    SessionFailed = 153
+    UsageResponse = 154  # Usage response
+    ChargeData = 154  # Alias of UsageResponse
+
+    # 200 ~ 249 Upstream general events
+    TaskRequest = 200
+    UpdateConfig = 201
+
+    # 250 ~ 299 Downstream general events
+    AudioMuted = 250
+
+    # 300 ~ 349 Upstream TTS events
+    SayHello = 300
+
+    # 350 ~ 399 Downstream TTS events
+    TTSSentenceStart = 350
+    TTSSentenceEnd = 351
+    TTSResponse = 352
+    TTSEnded = 359
+    PodcastRoundStart = 360
+    PodcastRoundResponse = 361
+    PodcastRoundEnd = 362
+
+    # 450 ~ 499 Downstream ASR events
+    ASRInfo = 450
+    ASRResponse = 451
+    ASREnded = 459
+
+    # 500 ~ 549 Upstream dialogue events
+    ChatTTSText = 500  # (Ground-Truth-Alignment) text for speech synthesis
+
+    # 550 ~ 599 Downstream dialogue events
+    ChatResponse = 550
+    ChatEnded = 559
+
+    # 650 ~ 699 Downstream dialogue events
+    # Events for source (original) language subtitle
+    SourceSubtitleStart = 650
+    SourceSubtitleResponse = 651
+    SourceSubtitleEnd = 652
+    # Events for target (translation) language subtitle
+    TranslationSubtitleStart = 653
+    TranslationSubtitleResponse = 654
+    TranslationSubtitleEnd = 655
+
+    def __str__(self) -> str:
+        return self.name if self.name else f"EventType({self.value})"
+
+
+@dataclass
+class Message:
+    """Message object
+
+    Message format:
+    0                 1                 2                 3
+    | 0 1 2 3 4 5 6 7 | 0 1 2 3 4 5 6 7 | 0 1 2 3 4 5 6 7 | 0 1 2 3 4 5 6 7 |
+    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+    |    Version      |   Header Size   |     Msg Type    |      Flags      |
+    |   (4 bits)      |    (4 bits)     |     (4 bits)    |     (4 bits)    |
+    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+    | Serialization   |   Compression   |           Reserved                |
+    |   (4 bits)      |    (4 bits)     |           (8 bits)                |
+    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+    |                                                                       |
+    |                   Optional Header Extensions                          |
+    |                     (if Header Size > 1)                              |
+    |                                                                       |
+    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+    |                                                                       |
+    |                           Payload                                     |
+    |                      (variable length)                                |
+    |                                                                       |
+    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+    """
+
+    version: VersionBits = VersionBits.Version1
+    header_size: HeaderSizeBits = HeaderSizeBits.HeaderSize4
+    type: MsgType = MsgType.Invalid
+    flag: MsgTypeFlagBits = MsgTypeFlagBits.NoSeq
+    serialization: SerializationBits = SerializationBits.JSON
+    compression: CompressionBits = CompressionBits.None_
+
+    event: EventType = EventType.None_
+    session_id: str = ""
+    connect_id: str = ""
+    sequence: int = 0
+    error_code: int = 0
+
+    payload: bytes = b""
+
+    @classmethod
+    def from_bytes(cls, data: bytes) -> "Message":
+        """Create message object from bytes"""
+        if len(data) < 3:
+            raise ValueError(
+                f"Data too short: expected at least 3 bytes, got {len(data)}"
+            )
+
+        type_and_flag = data[1]
+        msg_type = MsgType(type_and_flag >> 4)
+        flag = MsgTypeFlagBits(type_and_flag & 0b00001111)
+
+        msg = cls(type=msg_type, flag=flag)
+        msg.unmarshal(data)
+        return msg
+
+    def marshal(self) -> bytes:
+        """Serialize message to bytes"""
+        buffer = io.BytesIO()
+
+        # Write header
+        header = [
+            (self.version << 4) | self.header_size,
+            (self.type << 4) | self.flag,
+            (self.serialization << 4) | self.compression,
+        ]
+
+        header_size = 4 * self.header_size
+        if padding := header_size - len(header):
+            header.extend([0] * padding)
+
+        buffer.write(bytes(header))
+
+        # Write other fields
+        writers = self._get_writers()
+        for writer in writers:
+            writer(buffer)
+
+        return buffer.getvalue()
+
+    def unmarshal(self, data: bytes) -> None:
+        """Deserialize message from bytes"""
+        buffer = io.BytesIO(data)
+
+        # Read version and header size
+        version_and_header_size = buffer.read(1)[0]
+        self.version = VersionBits(version_and_header_size >> 4)
+        self.header_size = HeaderSizeBits(version_and_header_size & 0b00001111)
+
+        # Skip second byte
+        buffer.read(1)
+
+        # Read serialization and compression methods
+        serialization_compression = buffer.read(1)[0]
+        self.serialization = SerializationBits(serialization_compression >> 4)
+        self.compression = CompressionBits(serialization_compression & 0b00001111)
+
+        # Skip header padding
+        header_size = 4 * self.header_size
+        read_size = 3
+        if padding_size := header_size - read_size:
+            buffer.read(padding_size)
+
+        # Read other fields
+        readers = self._get_readers()
+        for reader in readers:
+            reader(buffer)
+
+        # Check for remaining data
+        remaining = buffer.read()
+        if remaining:
+            raise ValueError(f"Unexpected data after message: {remaining}")
+
+    def _get_writers(self) -> List[Callable[[io.BytesIO], None]]:
+        """Get list of writer functions"""
+        writers = []
+
+        if self.flag == MsgTypeFlagBits.WithEvent:
+            writers.extend([self._write_event, self._write_session_id])
+
+        if self.type in [
+            MsgType.FullClientRequest,
+            MsgType.FullServerResponse,
+            MsgType.FrontEndResultServer,
+            MsgType.AudioOnlyClient,
+            MsgType.AudioOnlyServer,
+        ]:
+            if self.flag in [MsgTypeFlagBits.PositiveSeq, MsgTypeFlagBits.NegativeSeq]:
+                writers.append(self._write_sequence)
+        elif self.type == MsgType.Error:
+            writers.append(self._write_error_code)
+        else:
+            raise ValueError(f"Unsupported message type: {self.type}")
+
+        writers.append(self._write_payload)
+        return writers
+
+    def _get_readers(self) -> List[Callable[[io.BytesIO], None]]:
+        """Get list of reader functions"""
+        readers = []
+
+        if self.type in [
+            MsgType.FullClientRequest,
+            MsgType.FullServerResponse,
+            MsgType.FrontEndResultServer,
+            MsgType.AudioOnlyClient,
+            MsgType.AudioOnlyServer,
+        ]:
+            if self.flag in [MsgTypeFlagBits.PositiveSeq, MsgTypeFlagBits.NegativeSeq]:
+                readers.append(self._read_sequence)
+        elif self.type == MsgType.Error:
+            readers.append(self._read_error_code)
+        else:
+            raise ValueError(f"Unsupported message type: {self.type}")
+
+        if self.flag == MsgTypeFlagBits.WithEvent:
+            readers.extend(
+                [self._read_event, self._read_session_id, self._read_connect_id]
+            )
+
+        readers.append(self._read_payload)
+        return readers
+
+    def _write_event(self, buffer: io.BytesIO) -> None:
+        """Write event"""
+        buffer.write(struct.pack(">i", self.event))
+
+    def _write_session_id(self, buffer: io.BytesIO) -> None:
+        """Write session ID"""
+        if self.event in [
+            EventType.StartConnection,
+            EventType.FinishConnection,
+            EventType.ConnectionStarted,
+            EventType.ConnectionFailed,
+        ]:
+            return
+
+        session_id_bytes = self.session_id.encode("utf-8")
+        size = len(session_id_bytes)
+        if size > 0xFFFFFFFF:
+            raise ValueError(f"Session ID size ({size}) exceeds max(uint32)")
+
+        buffer.write(struct.pack(">I", size))
+        if size > 0:
+            buffer.write(session_id_bytes)
+
+    def _write_sequence(self, buffer: io.BytesIO) -> None:
+        """Write sequence number"""
+        buffer.write(struct.pack(">i", self.sequence))
+
+    def _write_error_code(self, buffer: io.BytesIO) -> None:
+        """Write error code"""
+        buffer.write(struct.pack(">I", self.error_code))
+
+    def _write_payload(self, buffer: io.BytesIO) -> None:
+        """Write payload"""
+        size = len(self.payload)
+        if size > 0xFFFFFFFF:
+            raise ValueError(f"Payload size ({size}) exceeds max(uint32)")
+
+        buffer.write(struct.pack(">I", size))
+        buffer.write(self.payload)
+
+    def _read_event(self, buffer: io.BytesIO) -> None:
+        """Read event"""
+        event_bytes = buffer.read(4)
+        if event_bytes:
+            self.event = EventType(struct.unpack(">i", event_bytes)[0])
+
+    def _read_session_id(self, buffer: io.BytesIO) -> None:
+        """Read session ID"""
+        if self.event in [
+            EventType.StartConnection,
+            EventType.FinishConnection,
+            EventType.ConnectionStarted,
+            EventType.ConnectionFailed,
+            EventType.ConnectionFinished,
+        ]:
+            return
+
+        size_bytes = buffer.read(4)
+        if size_bytes:
+            size = struct.unpack(">I", size_bytes)[0]
+            if size > 0:
+                session_id_bytes = buffer.read(size)
+                if len(session_id_bytes) == size:
+                    self.session_id = session_id_bytes.decode("utf-8")
+
+    def _read_connect_id(self, buffer: io.BytesIO) -> None:
+        """Read connection ID"""
+        if self.event in [
+            EventType.ConnectionStarted,
+            EventType.ConnectionFailed,
+            EventType.ConnectionFinished,
+        ]:
+            size_bytes = buffer.read(4)
+            if size_bytes:
+                size = struct.unpack(">I", size_bytes)[0]
+                if size > 0:
+                    self.connect_id = buffer.read(size).decode("utf-8")
+
+    def _read_sequence(self, buffer: io.BytesIO) -> None:
+        """Read sequence number"""
+        sequence_bytes = buffer.read(4)
+        if sequence_bytes:
+            self.sequence = struct.unpack(">i", sequence_bytes)[0]
+
+    def _read_error_code(self, buffer: io.BytesIO) -> None:
+        """Read error code"""
+        error_code_bytes = buffer.read(4)
+        if error_code_bytes:
+            self.error_code = struct.unpack(">I", error_code_bytes)[0]
+
+    def _read_payload(self, buffer: io.BytesIO) -> None:
+        """Read payload"""
+        size_bytes = buffer.read(4)
+        if size_bytes:
+            size = struct.unpack(">I", size_bytes)[0]
+            if size > 0:
+                self.payload = buffer.read(size)
+
+    def __str__(self) -> str:
+        """String representation"""
+        if self.type in [MsgType.AudioOnlyServer, MsgType.AudioOnlyClient]:
+            if self.flag in [MsgTypeFlagBits.PositiveSeq, MsgTypeFlagBits.NegativeSeq]:
+                return f"MsgType: {self.type}, EventType:{self.event}, Sequence: {self.sequence}, PayloadSize: {len(self.payload)}"
+            return f"MsgType: {self.type}, EventType:{self.event}, PayloadSize: {len(self.payload)}"
+        elif self.type == MsgType.Error:
+            return f"MsgType: {self.type}, EventType:{self.event}, ErrorCode: {self.error_code}, Payload: {self.payload.decode('utf-8', 'ignore')}"
+        else:
+            if self.flag in [MsgTypeFlagBits.PositiveSeq, MsgTypeFlagBits.NegativeSeq]:
+                return f"MsgType: {self.type}, EventType:{self.event}, Sequence: {self.sequence}, Payload: {self.payload.decode('utf-8', 'ignore')}"
+            return f"MsgType: {self.type}, EventType:{self.event}, Payload: {self.payload.decode('utf-8', 'ignore')}"
+
+
+async def receive_message(websocket: websockets.WebSocketClientProtocol) -> Message:
+    """Receive message from websocket"""
+    try:
+        data = await websocket.recv()
+        if isinstance(data, str):
+            raise ValueError(f"Unexpected text message: {data}")
+        elif isinstance(data, bytes):
+            msg = Message.from_bytes(data)
+            logger.info(f"Received: {msg}")
+            return msg
+        else:
+            raise ValueError(f"Unexpected message type: {type(data)}")
+    except Exception as e:
+        logger.error(f"Failed to receive message: {e}")
+        raise
+
+
+async def wait_for_event(
+    websocket: websockets.WebSocketClientProtocol,
+    msg_type: MsgType,
+    event_type: EventType,
+) -> Message:
+    """Wait for specific event"""
+    while True:
+        msg = await receive_message(websocket)
+        if msg.type != msg_type or msg.event != event_type:
+            raise ValueError(f"Unexpected message: {msg}")
+        if msg.type == msg_type and msg.event == event_type:
+            return msg
+
+
+async def full_client_request(
+    websocket: websockets.WebSocketClientProtocol, payload: bytes
+) -> None:
+    """Send full client message"""
+    msg = Message(type=MsgType.FullClientRequest, flag=MsgTypeFlagBits.NoSeq)
+    msg.payload = payload
+    logger.info(f"Sending: {msg}")
+    await websocket.send(msg.marshal())
+
+
+async def audio_only_client(
+    websocket: websockets.WebSocketClientProtocol, payload: bytes, flag: MsgTypeFlagBits
+) -> None:
+    """Send audio-only client message"""
+    msg = Message(type=MsgType.AudioOnlyClient, flag=flag)
+    msg.payload = payload
+    logger.info(f"Sending: {msg}")
+    await websocket.send(msg.marshal())
+
+
+async def start_connection(websocket: websockets.WebSocketClientProtocol) -> None:
+    """Start connection"""
+    msg = Message(type=MsgType.FullClientRequest, flag=MsgTypeFlagBits.WithEvent)
+    msg.event = EventType.StartConnection
+    msg.payload = b"{}"
+    logger.info(f"Sending: {msg}")
+    await websocket.send(msg.marshal())
+
+
+async def finish_connection(websocket: websockets.WebSocketClientProtocol) -> None:
+    """Finish connection"""
+    msg = Message(type=MsgType.FullClientRequest, flag=MsgTypeFlagBits.WithEvent)
+    msg.event = EventType.FinishConnection
+    msg.payload = b"{}"
+    logger.info(f"Sending: {msg}")
+    await websocket.send(msg.marshal())
+
+
+async def start_session(
+    websocket: websockets.WebSocketClientProtocol, payload: bytes, session_id: str
+) -> None:
+    """Start session"""
+    msg = Message(type=MsgType.FullClientRequest, flag=MsgTypeFlagBits.WithEvent)
+    msg.event = EventType.StartSession
+    msg.session_id = session_id
+    msg.payload = payload
+    logger.info(f"Sending: {msg}")
+    await websocket.send(msg.marshal())
+
+
+async def finish_session(
+    websocket: websockets.WebSocketClientProtocol, session_id: str
+) -> None:
+    """Finish session"""
+    msg = Message(type=MsgType.FullClientRequest, flag=MsgTypeFlagBits.WithEvent)
+    msg.event = EventType.FinishSession
+    msg.session_id = session_id
+    msg.payload = b"{}"
+    logger.info(f"Sending: {msg}")
+    await websocket.send(msg.marshal())
+
+
+async def cancel_session(
+    websocket: websockets.WebSocketClientProtocol, session_id: str
+) -> None:
+    """Cancel session"""
+    msg = Message(type=MsgType.FullClientRequest, flag=MsgTypeFlagBits.WithEvent)
+    msg.event = EventType.CancelSession
+    msg.session_id = session_id
+    msg.payload = b"{}"
+    logger.info(f"Sending: {msg}")
+    await websocket.send(msg.marshal())
+
+
+async def task_request(
+    websocket: websockets.WebSocketClientProtocol, payload: bytes, session_id: str
+) -> None:
+    """Send task request"""
+    msg = Message(type=MsgType.FullClientRequest, flag=MsgTypeFlagBits.WithEvent)
+    msg.event = EventType.TaskRequest
+    msg.session_id = session_id
+    msg.payload = payload
+    logger.info(f"Sending: {msg}")
+    await websocket.send(msg.marshal())
diff --git a/dsLightRag/Util/__pycache__/TTS_Protocols.cpython-310.pyc b/dsLightRag/Util/__pycache__/TTS_Protocols.cpython-310.pyc
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index 00000000..a3d3432b
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