Backend Server Update

.gitignore

@@ -134,3 +134,4 @@ dist
 .yarn/build-state.yml
 .yarn/install-state.gz
 .pnp.*
+Backend/test.py

Backend/index.html

@@ -10,60 +10,113 @@
             max-width: 800px;
             margin: 0 auto;
             padding: 20px;
+            background-color: #f9f9f9;
         }
         .conversation {
-            border: 1px solid #ccc;
+            border: 1px solid #ddd;
-            border-radius: 8px;
+            border-radius: 12px;
-            padding: 15px;
+            padding: 20px;
-            height: 300px;
+            height: 400px;
             overflow-y: auto;
-            margin-bottom: 15px;
+            margin-bottom: 20px;
+            background-color: white;
+            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
         }
         .message {
-            margin-bottom: 10px;
+            margin-bottom: 15px;
-            padding: 8px;
+            padding: 12px;
-            border-radius: 8px;
+            border-radius: 12px;
+            max-width: 80%;
+            line-height: 1.4;
         }
         .user {
             background-color: #e3f2fd;
             text-align: right;
+            margin-left: auto;
+            border-bottom-right-radius: 4px;
         }
         .ai {
             background-color: #f1f1f1;
+            margin-right: auto;
+            border-bottom-left-radius: 4px;
+        }
+        .system {
+            background-color: #f8f9fa;
+            font-style: italic;
+            text-align: center;
+            font-size: 0.9em;
+            color: #666;
+            padding: 8px;
+            margin: 10px auto;
+            max-width: 90%;
         }
         .controls {
             display: flex;
-            flex-direction: column;
+            gap: 15px;
-            gap: 10px;
+            justify-content: center;
-        }
+            align-items: center;
-        .input-row {
-            display: flex;
-            gap: 10px;
-        }
-        input[type="text"] {
-            flex-grow: 1;
-            padding: 8px;
-            border-radius: 4px;
-            border: 1px solid #ccc;
         }
         button {
-            padding: 8px 16px;
+            padding: 12px 24px;
-            border-radius: 4px;
+            border-radius: 24px;
             border: none;
             background-color: #4CAF50;
             color: white;
             cursor: pointer;
+            font-weight: bold;
+            transition: all 0.2s ease;
+            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
         }
         button:hover {
             background-color: #45a049;
+            box-shadow: 0 4px 8px rgba(0,0,0,0.15);
         }
         .recording {
             background-color: #f44336;
+            animation: pulse 1.5s infinite;
+        }
+        .processing {
+            background-color: #FFA500;
         }
         select {
-            padding: 8px;
+            padding: 10px;
-            border-radius: 4px;
+            border-radius: 24px;
-            border: 1px solid #ccc;
+            border: 1px solid #ddd;
+            background-color: white;
+        }
+        .transcript {
+            font-style: italic;
+            color: #666;
+            margin-top: 5px;
+        }
+        @keyframes pulse {
+            0% { opacity: 1; }
+            50% { opacity: 0.7; }
+            100% { opacity: 1; }
+        }
+        .status-indicator {
+            display: flex;
+            align-items: center;
+            justify-content: center;
+            margin-top: 10px;
+            gap: 5px;
+        }
+        .status-dot {
+            width: 10px;
+            height: 10px;
+            border-radius: 50%;
+            background-color: #ccc;
+        }
+        .status-dot.active {
+            background-color: #4CAF50;
+        }
+        .status-text {
+            font-size: 0.9em;
+            color: #666;
+        }
+        audio {
+            width: 100%;
+            margin-top: 5px;
         }
     </style>
 </head>
@@ -72,30 +125,25 @@
     <div class="conversation" id="conversation"></div>
     
     <div class="controls">
-        <div class="input-row">
+        <select id="speakerSelect">
-            <input type="text" id="textInput" placeholder="Type your message...">
+            <option value="0">Speaker 0</option>
-            <select id="speakerSelect">
+            <option value="1">Speaker 1</option>
-                <option value="0">Speaker 0</option>
+        </select>
-                <option value="1">Speaker 1</option>
+        <button id="streamButton">Start Conversation</button>
-            </select>
+        <button id="clearButton">Clear Chat</button>
-            <button id="sendText">Send</button>
+    </div>
-        </div>
     
-        <div class="input-row">
+    <div class="status-indicator">
-            <button id="recordAudio">Record Audio</button>
+        <div class="status-dot" id="statusDot"></div>
-            <button id="clearContext">Clear Context</button>
+        <div class="status-text" id="statusText">Not connected</div>
-        </div>
     </div>
 
     <script>
+        // Variables
         let ws;
-        let mediaRecorder;
-        let audioChunks = [];
-        let isRecording = false;
         let audioContext;
         let streamProcessor;
         let isStreaming = false;
-        let streamButton;
         let isSpeaking = false;
         let silenceTimer = null;
         let energyWindow = [];
@@ -105,24 +153,20 @@
         
         // DOM elements
         const conversationEl = document.getElementById('conversation');
-        const textInputEl = document.getElementById('textInput');
         const speakerSelectEl = document.getElementById('speakerSelect');
-        const sendTextBtn = document.getElementById('sendText');
+        const streamButton = document.getElementById('streamButton');
-        const recordAudioBtn = document.getElementById('recordAudio');
+        const clearButton = document.getElementById('clearButton');
-        const clearContextBtn = document.getElementById('clearContext');
+        const statusDot = document.getElementById('statusDot');
+        const statusText = document.getElementById('statusText');
         
-        // Add streaming button to the input row
+        // Initialize on page load
         window.addEventListener('load', () => {
-            const inputRow = document.querySelector('.input-row:nth-child(2)');
-            streamButton = document.createElement('button');
-            streamButton.id = 'streamAudio';
-            streamButton.textContent = 'Start Streaming';
-            streamButton.addEventListener('click', toggleStreaming);
-            inputRow.appendChild(streamButton);
-            
             connectWebSocket();
-            setupRecording();
             setupAudioContext();
+            
+            // Event listeners
+            streamButton.addEventListener('click', toggleStreaming);
+            clearButton.addEventListener('click', clearConversation);
         });
         
         // Setup audio context for streaming
@@ -136,8 +180,68 @@
             }
         }
         
-        // Toggle audio streaming
+        // Connect to WebSocket server
-        async function toggleStreaming() {
+        function connectWebSocket() {
+            const wsProtocol = window.location.protocol === 'https:' ? 'wss:' : 'ws:';
+            const wsUrl = `${wsProtocol}//${window.location.hostname}:8000/ws`;
+            
+            ws = new WebSocket(wsUrl);
+            
+            ws.onopen = () => {
+                console.log('WebSocket connected');
+                statusDot.classList.add('active');
+                statusText.textContent = 'Connected';
+                addSystemMessage('Connected to server');
+            };
+            
+            ws.onmessage = (event) => {
+                const response = JSON.parse(event.data);
+                console.log('Received:', response);
+                
+                if (response.type === 'audio_response') {
+                    // Play audio response
+                    const audio = new Audio(response.audio);
+                    audio.play();
+                    
+                    // Add message to conversation
+                    addAIMessage(response.text || 'AI response', response.audio);
+                    
+                    // Reset to speaking state after AI response
+                    if (isStreaming) {
+                        streamButton.textContent = 'Listening...';
+                        streamButton.style.backgroundColor = '#f44336'; // Back to red
+                        streamButton.classList.add('recording');
+                        isSpeaking = false; // Reset speaking state
+                    }
+                } else if (response.type === 'error') {
+                    addSystemMessage(`Error: ${response.message}`);
+                } else if (response.type === 'context_updated') {
+                    addSystemMessage(response.message);
+                } else if (response.type === 'streaming_status') {
+                    addSystemMessage(`Streaming ${response.status}`);
+                } else if (response.type === 'transcription') {
+                    addUserTranscription(response.text);
+                }
+            };
+            
+            ws.onclose = () => {
+                console.log('WebSocket disconnected');
+                statusDot.classList.remove('active');
+                statusText.textContent = 'Disconnected';
+                addSystemMessage('Disconnected from server. Reconnecting...');
+                setTimeout(connectWebSocket, 3000);
+            };
+            
+            ws.onerror = (error) => {
+                console.error('WebSocket error:', error);
+                statusDot.classList.remove('active');
+                statusText.textContent = 'Error';
+                addSystemMessage('Connection error');
+            };
+        }
+        
+        // Toggle streaming
+        function toggleStreaming() {
             if (isStreaming) {
                 stopStreaming();
             } else {
@@ -145,7 +249,7 @@
             }
         }
         
-        // Start audio streaming with silence detection
+        // Start streaming
         async function startStreaming() {
             try {
                 const stream = await navigator.mediaDevices.getUserMedia({ audio: true });
@@ -155,7 +259,7 @@
                 isSpeaking = false;
                 energyWindow = [];
                 
-                streamButton.textContent = 'Speaking...';
+                streamButton.textContent = 'Listening...';
                 streamButton.classList.add('recording');
                 
                 // Create audio processor node
@@ -186,13 +290,13 @@
                 source.connect(streamProcessor);
                 streamProcessor.connect(audioContext.destination);
                 
-                addSystemMessage('Audio streaming started - speak naturally and pause when finished');
+                addSystemMessage('Listening - speak naturally and pause when finished');
                 
             } catch (err) {
                 console.error('Error starting audio stream:', err);
-                addSystemMessage(`Streaming error: ${err.message}`);
+                addSystemMessage(`Microphone error: ${err.message}`);
                 isStreaming = false;
-                streamButton.textContent = 'Start Streaming';
+                streamButton.textContent = 'Start Conversation';
                 streamButton.classList.remove('recording');
             }
         }
@@ -228,15 +332,17 @@
                     silenceTimer = setTimeout(() => {
                         // Silence persisted long enough
                         streamButton.textContent = 'Processing...';
-                        streamButton.style.backgroundColor = '#FFA500'; // Orange
+                        streamButton.classList.remove('recording');
+                        streamButton.classList.add('processing');
                         addSystemMessage('Detected pause in speech, processing response...');
                     }, CLIENT_SILENCE_DURATION_MS);
                 }
             } else if (!isSpeaking && !isSilent) {
                 // Transition from silence to speaking
                 isSpeaking = true;
-                streamButton.textContent = 'Speaking...';
+                streamButton.textContent = 'Listening...';
-                streamButton.style.backgroundColor = '#f44336'; // Red
+                streamButton.classList.add('recording');
+                streamButton.classList.remove('processing');
                 
                 // Clear any pending silence timer
                 if (silenceTimer) {
@@ -276,7 +382,7 @@
             reader.readAsDataURL(wavData);
         }
         
-        // Stop audio streaming
+        // Stop streaming
         function stopStreaming() {
             if (streamProcessor) {
                 streamProcessor.disconnect();
@@ -293,11 +399,11 @@
             isSpeaking = false;
             energyWindow = [];
             
-            streamButton.textContent = 'Start Streaming';
+            streamButton.textContent = 'Start Conversation';
-            streamButton.classList.remove('recording');
+            streamButton.classList.remove('recording', 'processing');
             streamButton.style.backgroundColor = ''; // Reset to default
             
-            addSystemMessage('Audio streaming stopped');
+            addSystemMessage('Conversation paused');
             
             // Send stop streaming signal to server
             ws.send(JSON.stringify({
@@ -306,6 +412,18 @@
             }));
         }
         
+        // Clear conversation
+        function clearConversation() {
+            // Clear conversation history
+            ws.send(JSON.stringify({
+                action: 'clear_context'
+            }));
+            
+            // Clear the UI
+            conversationEl.innerHTML = '';
+            addSystemMessage('Conversation cleared');
+        }
+        
         // Downsample audio buffer to target sample rate
         function downsampleBuffer(buffer, sampleRate, targetSampleRate) {
             if (targetSampleRate === sampleRate) {
@@ -376,212 +494,49 @@
             }
         }
         
-        // Connect to WebSocket
+        // Message display functions
-        function connectWebSocket() {
+        function addUserTranscription(text) {
-            const wsProtocol = window.location.protocol === 'https:' ? 'wss:' : 'ws:';
+            // Find if there's already a pending user message
-            const wsUrl = `${wsProtocol}//${window.location.hostname}:8000/ws`;
+            let pendingMessage = document.querySelector('.message.user.pending');
             
-            ws = new WebSocket(wsUrl);
+            if (!pendingMessage) {
+                // Create a new message
+                pendingMessage = document.createElement('div');
+                pendingMessage.classList.add('message', 'user', 'pending');
+                conversationEl.appendChild(pendingMessage);
+            }
             
-            ws.onopen = () => {
+            pendingMessage.textContent = text;
-                console.log('WebSocket connected');
+            pendingMessage.classList.remove('pending');
-                addSystemMessage('Connected to server');
-            };
-            
-            ws.onmessage = (event) => {
-                const response = JSON.parse(event.data);
-                console.log('Received:', response);
-                
-                if (response.type === 'audio_response') {
-                    // Play audio response
-                    const audio = new Audio(response.audio);
-                    audio.play();
-                    
-                    // Add message to conversation
-                    addAIMessage(response.audio);
-                    
-                    // Reset the streaming button if we're still in streaming mode
-                    if (isStreaming) {
-                        streamButton.textContent = 'Speaking...';
-                        streamButton.style.backgroundColor = '#f44336'; // Back to red
-                        isSpeaking = false; // Reset speaking state
-                    }
-                } else if (response.type === 'error') {
-                    addSystemMessage(`Error: ${response.message}`);
-                } else if (response.type === 'context_updated') {
-                    addSystemMessage(response.message);
-                } else if (response.type === 'streaming_status') {
-                    addSystemMessage(`Streaming ${response.status}`);
-                }
-            };
-            
-            ws.onclose = () => {
-                console.log('WebSocket disconnected');
-                addSystemMessage('Disconnected from server. Reconnecting...');
-                setTimeout(connectWebSocket, 3000);
-            };
-            
-            ws.onerror = (error) => {
-                console.error('WebSocket error:', error);
-                addSystemMessage('Connection error');
-            };
-        }
-        
-        // Add message to conversation
-        function addUserMessage(text) {
-            const messageEl = document.createElement('div');
-            messageEl.classList.add('message', 'user');
-            messageEl.textContent = text;
-            conversationEl.appendChild(messageEl);
             conversationEl.scrollTop = conversationEl.scrollHeight;
         }
         
-        function addAIMessage(audioSrc) {
+        function addAIMessage(text, audioSrc) {
             const messageEl = document.createElement('div');
             messageEl.classList.add('message', 'ai');
             
+            if (text) {
+                const textDiv = document.createElement('div');
+                textDiv.textContent = text;
+                messageEl.appendChild(textDiv);
+            }
+            
             const audioEl = document.createElement('audio');
             audioEl.controls = true;
             audioEl.src = audioSrc;
-            
             messageEl.appendChild(audioEl);
+            
             conversationEl.appendChild(messageEl);
             conversationEl.scrollTop = conversationEl.scrollHeight;
         }
         
         function addSystemMessage(text) {
             const messageEl = document.createElement('div');
-            messageEl.classList.add('message');
+            messageEl.classList.add('message', 'system');
             messageEl.textContent = text;
             conversationEl.appendChild(messageEl);
             conversationEl.scrollTop = conversationEl.scrollHeight;
         }
-        
-        // Send text for audio generation
-        function sendTextForGeneration() {
-            const text = textInputEl.value.trim();
-            const speaker = parseInt(speakerSelectEl.value);
-            
-            if (!text) return;
-            
-            addUserMessage(text);
-            textInputEl.value = '';
-            
-            const request = {
-                action: 'generate',
-                text: text,
-                speaker: speaker
-            };
-            
-            ws.send(JSON.stringify(request));
-        }
-        
-        // Audio recording functions
-        async function setupRecording() {
-            try {
-                const stream = await navigator.mediaDevices.getUserMedia({ audio: true });
-                
-                mediaRecorder = new MediaRecorder(stream);
-                
-                mediaRecorder.ondataavailable = (event) => {
-                    if (event.data.size > 0) {
-                        audioChunks.push(event.data);
-                    }
-                };
-                
-                mediaRecorder.onstop = async () => {
-                    const audioBlob = new Blob(audioChunks, { type: 'audio/wav' });
-                    const audioUrl = URL.createObjectURL(audioBlob);
-                    
-                    // Add audio to conversation
-                    addUserMessage('Recorded audio:');
-                    const messageEl = document.createElement('div');
-                    messageEl.classList.add('message', 'user');
-                    
-                    const audioEl = document.createElement('audio');
-                    audioEl.controls = true;
-                    audioEl.src = audioUrl;
-                    
-                    messageEl.appendChild(audioEl);
-                    conversationEl.appendChild(messageEl);
-                    
-                    // Convert to base64
-                    const reader = new FileReader();
-                    reader.readAsDataURL(audioBlob);
-                    reader.onloadend = () => {
-                        const base64Audio = reader.result;
-                        const text = textInputEl.value.trim() || "Recorded audio";
-                        const speaker = parseInt(speakerSelectEl.value);
-                        
-                        // Send to server
-                        const request = {
-                            action: 'add_to_context',
-                            text: text,
-                            speaker: speaker,
-                            audio: base64Audio
-                        };
-                        
-                        ws.send(JSON.stringify(request));
-                        textInputEl.value = '';
-                    };
-                    
-                    audioChunks = [];
-                    recordAudioBtn.textContent = 'Record Audio';
-                    recordAudioBtn.classList.remove('recording');
-                };
-                
-                console.log('Recording setup completed');
-                return true;
-            } catch (err) {
-                console.error('Error setting up recording:', err);
-                addSystemMessage(`Microphone access error: ${err.message}`);
-                return false;
-            }
-        }
-        
-        function toggleRecording() {
-            if (isRecording) {
-                mediaRecorder.stop();
-                isRecording = false;
-            } else {
-                if (!mediaRecorder) {
-                    setupRecording().then(success => {
-                        if (success) startRecording();
-                    });
-                } else {
-                    startRecording();
-                }
-            }
-        }
-        
-        function startRecording() {
-            audioChunks = [];
-            mediaRecorder.start();
-            isRecording = true;
-            recordAudioBtn.textContent = 'Stop Recording';
-            recordAudioBtn.classList.add('recording');
-        }
-        
-        // Event listeners
-        sendTextBtn.addEventListener('click', sendTextForGeneration);
-        
-        textInputEl.addEventListener('keypress', (e) => {
-            if (e.key === 'Enter') sendTextForGeneration();
-        });
-        
-        recordAudioBtn.addEventListener('click', toggleRecording);
-        
-        clearContextBtn.addEventListener('click', () => {
-            ws.send(JSON.stringify({
-                action: 'clear_context'
-            }));
-        });
-        
-        // Initialize
-        window.addEventListener('load', () => {
-            connectWebSocket();
-            setupRecording();
-        });
     </script>
 </body>
 </html>

Backend/server.py

@@ -5,6 +5,8 @@ import asyncio
 import torch
 import torchaudio
 import numpy as np
+import io
+import whisperx
 from io import BytesIO
 from typing import List, Dict, Any, Optional
 from fastapi import FastAPI, WebSocket, WebSocketDisconnect
@@ -13,6 +15,7 @@ from pydantic import BaseModel
 from generator import load_csm_1b, Segment
 import uvicorn
 import time
+import gc
 from collections import deque
 
 # Select device
@@ -25,6 +28,12 @@ print(f"Using device: {device}")
 # Initialize the model
 generator = load_csm_1b(device=device)
 
+# Initialize WhisperX for ASR
+print("Loading WhisperX model...")
+# Use a smaller model for faster response times
+asr_model = whisperx.load_model("medium", device, compute_type="float16")
+print("WhisperX model loaded!")
+
 app = FastAPI()
 
 # Add CORS middleware to allow cross-origin requests
@@ -93,6 +102,68 @@ async def encode_audio_data(audio_tensor: torch.Tensor) -> str:
     return f"data:audio/wav;base64,{audio_base64}"
 
 
+async def transcribe_audio(audio_tensor: torch.Tensor) -> str:
+    """Transcribe audio using WhisperX"""
+    try:
+        # Save the tensor to a temporary file
+        temp_file = BytesIO()
+        torchaudio.save(temp_file, audio_tensor.unsqueeze(0).cpu(), generator.sample_rate, format="wav")
+        temp_file.seek(0)
+        
+        # Create a temporary file on disk (WhisperX requires a file path)
+        temp_path = "temp_audio.wav"
+        with open(temp_path, "wb") as f:
+            f.write(temp_file.read())
+        
+        # Load and transcribe the audio
+        audio = whisperx.load_audio(temp_path)
+        result = asr_model.transcribe(audio, batch_size=16)
+        
+        # Clean up
+        os.remove(temp_path)
+        
+        # Get the transcription text
+        if result["segments"] and len(result["segments"]) > 0:
+            # Combine all segments
+            transcription = " ".join([segment["text"] for segment in result["segments"]])
+            print(f"Transcription: {transcription}")
+            return transcription.strip()
+        else:
+            return ""
+    except Exception as e:
+        print(f"Error in transcription: {str(e)}")
+        return ""
+
+
+async def generate_response(text: str, conversation_history: List[Segment]) -> str:
+    """Generate a contextual response based on the transcribed text"""
+    # Simple response logic - can be replaced with a more sophisticated LLM in the future
+    responses = {
+        "hello": "Hello there! How are you doing today?",
+        "how are you": "I'm doing well, thanks for asking! How about you?",
+        "what is your name": "I'm Sesame, your voice assistant. How can I help you?",
+        "bye": "Goodbye! It was nice chatting with you.",
+        "thank you": "You're welcome! Is there anything else I can help with?",
+        "weather": "I don't have real-time weather data, but I hope it's nice where you are!",
+        "help": "I can chat with you using natural voice. Just speak normally and I'll respond.",
+    }
+    
+    text_lower = text.lower()
+    
+    # Check for matching keywords
+    for key, response in responses.items():
+        if key in text_lower:
+            return response
+    
+    # Default responses based on text length
+    if not text:
+        return "I didn't catch that. Could you please repeat?"
+    elif len(text) < 10:
+        return "Thanks for your message. Could you elaborate a bit more?"
+    else:
+        return f"I understand you said '{text}'. That's interesting! Can you tell me more about that?"
+
+
 @app.websocket("/ws")
 async def websocket_endpoint(websocket: WebSocket):
     await manager.connect(websocket)
@@ -220,30 +291,55 @@ async def websocket_endpoint(websocket: WebSocket):
                         # User has stopped talking - process the collected audio
                         full_audio = torch.cat(streaming_buffer, dim=0)
                         
-                        # Process with speech-to-text (you would need to implement this)
+                        # Process with WhisperX speech-to-text
-                        # For now, just use a placeholder text
+                        transcribed_text = await transcribe_audio(full_audio)
-                        text = f"User audio from speaker {speaker_id}"
                         
-                        print(f"Detected end of speech, processing {len(streaming_buffer)} chunks")
+                        # Log the transcription
+                        print(f"Transcribed text: '{transcribed_text}'")
                         
                         # Add to conversation context
-                        context_segments.append(Segment(text=text, speaker=speaker_id, audio=full_audio))
+                        if transcribed_text:
+                            user_segment = Segment(text=transcribed_text, speaker=speaker_id, audio=full_audio)
+                            context_segments.append(user_segment)
                             
-                        # Generate response
+                            # Generate a contextual response
-                        response_text = "This is a response to what you just said"
+                            response_text = await generate_response(transcribed_text, context_segments)
-                        audio_tensor = generator.generate(
-                            text=response_text,
-                            speaker=1 if speaker_id == 0 else 0,  # Use opposite speaker
-                            context=context_segments,
-                            max_audio_length_ms=10_000,
-                        )
                             
-                        # Convert audio to base64 and send back to client
+                            # Send the transcribed text to client
-                        audio_base64 = await encode_audio_data(audio_tensor)
+                            await websocket.send_json({
-                        await websocket.send_json({
+                                "type": "transcription",
-                            "type": "audio_response",
+                                "text": transcribed_text
-                            "audio": audio_base64
+                            })
-                        })
+                            
+                            # Generate audio for the response
+                            audio_tensor = generator.generate(
+                                text=response_text,
+                                speaker=1 if speaker_id == 0 else 0,  # Use opposite speaker
+                                context=context_segments,
+                                max_audio_length_ms=10_000,
+                            )
+                            
+                            # Add response to context
+                            ai_segment = Segment(
+                                text=response_text, 
+                                speaker=1 if speaker_id == 0 else 0, 
+                                audio=audio_tensor
+                            )
+                            context_segments.append(ai_segment)
+                            
+                            # Convert audio to base64 and send back to client
+                            audio_base64 = await encode_audio_data(audio_tensor)
+                            await websocket.send_json({
+                                "type": "audio_response",
+                                "text": response_text,
+                                "audio": audio_base64
+                            })
+                        else:
+                            # If transcription failed, send a generic response
+                            await websocket.send_json({
+                                "type": "error",
+                                "message": "Sorry, I couldn't understand what you said. Could you try again?"
+                            })
                         
                         # Clear buffer and reset silence detection
                         streaming_buffer = []
@@ -256,8 +352,19 @@ async def websocket_endpoint(websocket: WebSocket):
                     elif len(streaming_buffer) >= 30:  # ~6 seconds of audio at 5 chunks/sec
                         print("Buffer limit reached, processing audio")
                         full_audio = torch.cat(streaming_buffer, dim=0)
-                        text = f"Continued speech from speaker {speaker_id}"
+                        
-                        context_segments.append(Segment(text=text, speaker=speaker_id, audio=full_audio))
+                        # Process with WhisperX speech-to-text
+                        transcribed_text = await transcribe_audio(full_audio)
+                        
+                        if transcribed_text:
+                            context_segments.append(Segment(text=transcribed_text, speaker=speaker_id, audio=full_audio))
+                            
+                            # Send the transcribed text to client
+                            await websocket.send_json({
+                                "type": "transcription",
+                                "text": transcribed_text + " (processing continued speech...)"
+                            })
+                        
                         streaming_buffer = []
                         
                 except Exception as e:
@@ -269,11 +376,21 @@ async def websocket_endpoint(websocket: WebSocket):
             
             elif action == "stop_streaming":
                 is_streaming = False
-                if streaming_buffer:
+                if streaming_buffer and len(streaming_buffer) > 5:  # Only process if there's meaningful audio
                     # Process any remaining audio in the buffer
                     full_audio = torch.cat(streaming_buffer, dim=0)
-                    text = f"Final streaming audio from speaker {request.get('speaker', 0)}"
+                    
-                    context_segments.append(Segment(text=text, speaker=request.get("speaker", 0), audio=full_audio))
+                    # Process with WhisperX speech-to-text
+                    transcribed_text = await transcribe_audio(full_audio)
+                    
+                    if transcribed_text:
+                        context_segments.append(Segment(text=transcribed_text, speaker=request.get("speaker", 0), audio=full_audio))
+                        
+                        # Send the transcribed text to client
+                        await websocket.send_json({
+                            "type": "transcription",
+                            "text": transcribed_text
+                        })
                 
                 streaming_buffer = []
                 await websocket.send_json({
@@ -286,12 +403,15 @@ async def websocket_endpoint(websocket: WebSocket):
         print("Client disconnected")
     except Exception as e:
         print(f"Error: {str(e)}")
-        await websocket.send_json({
+        try:
-            "type": "error",
+            await websocket.send_json({
-            "message": str(e)
+                "type": "error",
-        })
+                "message": str(e)
+            })
+        except:
+            pass
         manager.disconnect(websocket)
 
 
 if __name__ == "__main__":
-    uvicorn.run(app, host="localhost", port=8000)
+    uvicorn.run(app, host="0.0.0.0", port=8000)