From 2ca0c62f8cd8e660d99a2b6f2b242ac2663fd6d7 Mon Sep 17 00:00:00 2001
From: "google-labs-jules[bot]"
 <161369871+google-labs-jules[bot]@users.noreply.github.com>
Date: Wed, 3 Dec 2025 08:10:11 +0000
Subject: [PATCH] feat: add offline privacy-first speech-to-text using Web
 Worker

- Implement `useWhisper` hook for audio recording and worker communication
- Add `workers/worker.js` to handle Xenova/whisper-tiny.en model inference
- Update `PromptInputBox` to include microphone button and recording state UI
- Ensure main thread is not blocked during model loading and inference
---
 components/ui/ai-prompt-box.tsx |  45 +-
 hooks/useWhisper.ts             | 179 +++++++
 package-lock.json               | 842 +++++++++++++++++++++++++++++++-
 package.json                    |   1 +
 workers/worker.js               |  55 +++
 5 files changed, 1115 insertions(+), 7 deletions(-)
 create mode 100644 hooks/useWhisper.ts
 create mode 100644 workers/worker.js

diff --git a/components/ui/ai-prompt-box.tsx b/components/ui/ai-prompt-box.tsx
index 30f12b4..0d763f9 100644
--- a/components/ui/ai-prompt-box.tsx
+++ b/components/ui/ai-prompt-box.tsx
@@ -2,9 +2,10 @@ import React from "react";
 import * as TooltipPrimitive from "@radix-ui/react-tooltip";
 import * as DialogPrimitive from "@radix-ui/react-dialog";
 import * as PopoverPrimitive from "@radix-ui/react-popover";
-import { ArrowUp, Paperclip, Square, X, Globe, BrainCog, ChevronDown, Brain, ShieldAlert, Layout, MessageCircleQuestion, Link as LinkIcon } from "lucide-react";
+import { ArrowUp, Paperclip, Square, X, Globe, BrainCog, ChevronDown, Brain, ShieldAlert, Layout, MessageCircleQuestion, Link as LinkIcon, Mic, Loader2, StopCircle } from "lucide-react";
 import { motion, AnimatePresence } from "framer-motion";
 import { PERSONAS, PersonaKey } from "../../constants";
+import { useWhisper } from "../../hooks/useWhisper";
 
 const cn = (...classes: (string | undefined | null | false)[]) => classes.filter(Boolean).join(" ");
 
@@ -156,6 +157,13 @@ export const PromptInputBox = React.forwardRef<HTMLDivElement, PromptInputBoxPro
   const textareaRef = React.useRef<HTMLTextAreaElement>(null);
   const fileInputRef = React.useRef<HTMLInputElement>(null);
 
+  const { isRecording, isTranscribing, isLoadingModel, loadingProgress, startRecording, stopRecording } = useWhisper((text) => {
+    setInput(prev => {
+        const spacer = prev.length > 0 && !prev.endsWith(' ') ? ' ' : '';
+        return prev + spacer + text;
+    });
+  });
+
   React.useEffect(() => {
     if (textareaRef.current) {
       textareaRef.current.style.height = "auto";
@@ -374,6 +382,41 @@ export const PromptInputBox = React.forwardRef<HTMLDivElement, PromptInputBoxPro
                 <TooltipContent>Attach Image</TooltipContent>
               </Tooltip>
 
+              <Tooltip>
+                 <TooltipTrigger asChild>
+                    <button
+                        onClick={isRecording ? stopRecording : startRecording}
+                        disabled={isLoading || isTranscribing}
+                        className={cn(
+                            "p-2 rounded-full transition-colors relative",
+                             isRecording ? "text-red-500 bg-red-50 animate-pulse" : "text-stone-400 hover:text-stone-600 hover:bg-stone-100"
+                        )}
+                    >
+                       {isLoadingModel ? (
+                           <div className="relative w-5 h-5 flex items-center justify-center">
+                              <Loader2 className="w-4 h-4 animate-spin text-brand-600" />
+                              {loadingProgress !== null && (
+                                <span className="absolute -top-3 -right-3 text-[8px] bg-brand-100 text-brand-700 px-1 rounded-full font-bold">
+                                    {loadingProgress}%
+                                </span>
+                              )}
+                           </div>
+                       ) : isTranscribing ? (
+                           <Loader2 className="w-5 h-5 animate-spin text-stone-400" />
+                       ) : isRecording ? (
+                           <StopCircle className="w-5 h-5" />
+                       ) : (
+                           <Mic className="w-5 h-5" />
+                       )}
+                    </button>
+                 </TooltipTrigger>
+                 <TooltipContent>
+                     {isLoadingModel ? "Downloading Model..." :
+                      isTranscribing ? "Transcribing..." :
+                      isRecording ? "Stop Recording" : "Voice Input"}
+                 </TooltipContent>
+              </Tooltip>
+
               <Tooltip>
                 <TooltipTrigger asChild>
                   <button 
diff --git a/hooks/useWhisper.ts b/hooks/useWhisper.ts
new file mode 100644
index 0000000..4859f66
--- /dev/null
+++ b/hooks/useWhisper.ts
@@ -0,0 +1,179 @@
+import { useState, useEffect, useRef, useCallback } from 'react';
+
+export interface WhisperHook {
+    isRecording: boolean;
+    isTranscribing: boolean;
+    transcript: string | null;
+    isLoadingModel: boolean;
+    loadingProgress: number | null;
+    startRecording: () => Promise<void>;
+    stopRecording: () => Promise<void>;
+}
+
+export function useWhisper(onTranscript?: (text: string) => void) {
+    const [isRecording, setIsRecording] = useState(false);
+    const [isTranscribing, setIsTranscribing] = useState(false);
+    const [transcript, setTranscript] = useState<string | null>(null);
+    const [isLoadingModel, setIsLoadingModel] = useState(false);
+    const [loadingProgress, setLoadingProgress] = useState<number | null>(null); // 0-100
+    const [isModelLoaded, setIsModelLoaded] = useState(false);
+
+    const worker = useRef<Worker | null>(null);
+    const mediaStream = useRef<MediaStream | null>(null);
+    const audioContext = useRef<AudioContext | null>(null);
+    const processor = useRef<ScriptProcessorNode | null>(null);
+    const audioData = useRef<Float32Array[]>([]);
+
+    // Use a ref for the callback to avoid re-initializing the worker when the callback changes
+    const onTranscriptRef = useRef(onTranscript);
+    useEffect(() => {
+        onTranscriptRef.current = onTranscript;
+    }, [onTranscript]);
+
+    useEffect(() => {
+        // Initialize worker
+        if (!worker.current) {
+            worker.current = new Worker(new URL('../workers/worker.js', import.meta.url), {
+                type: 'module'
+            });
+
+            worker.current.onmessage = (event) => {
+                const { type, data } = event.data;
+                switch (type) {
+                    case 'download':
+                        // data usually contains { status: 'progress', progress: 0-100, file: '...' } or similar
+                        // transformers.js progress callback: { status: 'progress', name: string, file: string, loaded: number, total: number, progress: number }
+                        if (data.status === 'progress') {
+                            setIsLoadingModel(true);
+                            setLoadingProgress(Math.round(data.progress)); // 0-100
+                        } else if (data.status === 'done') {
+                            // Single file done
+                        } else if (data.status === 'ready') {
+                             setIsLoadingModel(false);
+                             setLoadingProgress(null);
+                        }
+                        break;
+                    case 'ready':
+                        setIsModelLoaded(true);
+                        setIsLoadingModel(false);
+                        setLoadingProgress(null);
+                        break;
+                    case 'result':
+                        setIsTranscribing(false);
+                        setTranscript(data);
+                        if (onTranscriptRef.current) {
+                            onTranscriptRef.current(data);
+                        }
+                        break;
+                    case 'error':
+                        console.error("Whisper Worker Error:", data);
+                        setIsTranscribing(false);
+                        setIsLoadingModel(false);
+                        break;
+                }
+            };
+
+            // Start loading model immediately or lazy load?
+            // Requirement: "Initial state: Click to enable voice input (first time need download model)"
+            // So we don't load immediately. We load on first click.
+        }
+
+        return () => {
+            worker.current?.terminate();
+            worker.current = null;
+        };
+    }, []); // Empty dependency array to run only once
+
+    const loadModel = useCallback(() => {
+        if (!worker.current) return;
+        setIsLoadingModel(true);
+        worker.current.postMessage({ type: 'load' });
+    }, []);
+
+    const processAudio = (e: AudioProcessingEvent) => {
+        const inputData = e.inputBuffer.getChannelData(0);
+        // Clone the data
+        audioData.current.push(new Float32Array(inputData));
+    };
+
+    const startRecording = async () => {
+        if (!isModelLoaded && !isLoadingModel) {
+            loadModel();
+            // We wait for model to load? Or just start loading and tell user?
+            // "Initial state: Click to enable voice input (first time need download model)"
+            // Let's assume user clicks button -> if not loaded, load.
+            // But we can't record while loading model efficiently or UI might be confusing.
+            // Let's return and let the UI show loading state.
+            return;
+        }
+
+        if (isLoadingModel) return;
+
+        try {
+            const stream = await navigator.mediaDevices.getUserMedia({ audio: true });
+            mediaStream.current = stream;
+
+            // Use 16000Hz sample rate as required by Whisper
+            const AudioContextClass = window.AudioContext || (window as any).webkitAudioContext;
+            audioContext.current = new AudioContextClass({ sampleRate: 16000 });
+
+            const source = audioContext.current.createMediaStreamSource(stream);
+            // ScriptProcessorNode is deprecated but widely supported. AudioWorklet is better but more complex to setup in a single file without extra files.
+            // bufferSize 4096 gives ~0.25s latency at 16kHz
+            processor.current = audioContext.current.createScriptProcessor(4096, 1, 1);
+
+            processor.current.onaudioprocess = processAudio;
+
+            source.connect(processor.current);
+            processor.current.connect(audioContext.current.destination);
+
+            audioData.current = [];
+            setIsRecording(true);
+        } catch (err) {
+            console.error("Error accessing microphone:", err);
+        }
+    };
+
+    const stopRecording = async () => {
+        if (!isRecording) return;
+
+        if (processor.current && audioContext.current) {
+            processor.current.disconnect();
+            audioContext.current.close();
+        }
+
+        if (mediaStream.current) {
+            mediaStream.current.getTracks().forEach(track => track.stop());
+        }
+
+        setIsRecording(false);
+        setIsTranscribing(true);
+
+        // Merge audio buffers
+        const totalLength = audioData.current.reduce((acc, val) => acc + val.length, 0);
+        const result = new Float32Array(totalLength);
+        let offset = 0;
+        for (const buffer of audioData.current) {
+            result.set(buffer, offset);
+            offset += buffer.length;
+        }
+
+        // Send to worker
+        if (worker.current) {
+            worker.current.postMessage({
+                type: 'generate',
+                audio: result
+            });
+        }
+    };
+
+    return {
+        isRecording,
+        isTranscribing,
+        transcript,
+        isLoadingModel,
+        loadingProgress,
+        startRecording,
+        stopRecording
+    };
+}
diff --git a/package-lock.json b/package-lock.json
index 8b8dbcc..1971348 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -14,6 +14,7 @@
         "@radix-ui/react-slot": "1.0.2",
         "@radix-ui/react-tooltip": "1.0.7",
         "@vercel/analytics": "^1.5.0",
+        "@xenova/transformers": "^2.17.2",
         "class-variance-authority": "0.7.0",
         "clsx": "2.1.1",
         "framer-motion": "11.1.7",
@@ -61,6 +62,7 @@
       "integrity": "sha512-e7jT4DxYvIDLk1ZHmU/m/mB19rex9sv0c2ftBtjSBv+kVM/902eh0fINUzD7UwLLNR+jU585GxUJ8/EBfAM5fw==",
       "dev": true,
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "@babel/code-frame": "^7.27.1",
         "@babel/generator": "^7.28.5",
@@ -822,6 +824,15 @@
         }
       }
     },
+    "node_modules/@huggingface/jinja": {
+      "version": "0.2.2",
+      "resolved": "https://registry.npmjs.org/@huggingface/jinja/-/jinja-0.2.2.tgz",
+      "integrity": "sha512-/KPde26khDUIPkTGU82jdtTW9UAuvUTumCAbFs/7giR0SxsvZC4hru51PBvpijH6BVkHcROcvZM/lpy5h1jRRA==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=18"
+      }
+    },
     "node_modules/@isaacs/cliui": {
       "version": "8.0.2",
       "resolved": "https://registry.npmjs.org/@isaacs/cliui/-/cliui-8.0.2.tgz",
@@ -899,6 +910,70 @@
         "node": ">=14"
       }
     },
+    "node_modules/@protobufjs/aspromise": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/@protobufjs/aspromise/-/aspromise-1.1.2.tgz",
+      "integrity": "sha512-j+gKExEuLmKwvz3OgROXtrJ2UG2x8Ch2YZUxahh+s1F2HZ+wAceUNLkvy6zKCPVRkU++ZWQrdxsUeQXmcg4uoQ==",
+      "license": "BSD-3-Clause"
+    },
+    "node_modules/@protobufjs/base64": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/@protobufjs/base64/-/base64-1.1.2.tgz",
+      "integrity": "sha512-AZkcAA5vnN/v4PDqKyMR5lx7hZttPDgClv83E//FMNhR2TMcLUhfRUBHCmSl0oi9zMgDDqRUJkSxO3wm85+XLg==",
+      "license": "BSD-3-Clause"
+    },
+    "node_modules/@protobufjs/codegen": {
+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/@protobufjs/codegen/-/codegen-2.0.4.tgz",
+      "integrity": "sha512-YyFaikqM5sH0ziFZCN3xDC7zeGaB/d0IUb9CATugHWbd1FRFwWwt4ld4OYMPWu5a3Xe01mGAULCdqhMlPl29Jg==",
+      "license": "BSD-3-Clause"
+    },
+    "node_modules/@protobufjs/eventemitter": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/@protobufjs/eventemitter/-/eventemitter-1.1.0.tgz",
+      "integrity": "sha512-j9ednRT81vYJ9OfVuXG6ERSTdEL1xVsNgqpkxMsbIabzSo3goCjDIveeGv5d03om39ML71RdmrGNjG5SReBP/Q==",
+      "license": "BSD-3-Clause"
+    },
+    "node_modules/@protobufjs/fetch": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/@protobufjs/fetch/-/fetch-1.1.0.tgz",
+      "integrity": "sha512-lljVXpqXebpsijW71PZaCYeIcE5on1w5DlQy5WH6GLbFryLUrBD4932W/E2BSpfRJWseIL4v/KPgBFxDOIdKpQ==",
+      "license": "BSD-3-Clause",
+      "dependencies": {
+        "@protobufjs/aspromise": "^1.1.1",
+        "@protobufjs/inquire": "^1.1.0"
+      }
+    },
+    "node_modules/@protobufjs/float": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/@protobufjs/float/-/float-1.0.2.tgz",
+      "integrity": "sha512-Ddb+kVXlXst9d+R9PfTIxh1EdNkgoRe5tOX6t01f1lYWOvJnSPDBlG241QLzcyPdoNTsblLUdujGSE4RzrTZGQ==",
+      "license": "BSD-3-Clause"
+    },
+    "node_modules/@protobufjs/inquire": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/@protobufjs/inquire/-/inquire-1.1.0.tgz",
+      "integrity": "sha512-kdSefcPdruJiFMVSbn801t4vFK7KB/5gd2fYvrxhuJYg8ILrmn9SKSX2tZdV6V+ksulWqS7aXjBcRXl3wHoD9Q==",
+      "license": "BSD-3-Clause"
+    },
+    "node_modules/@protobufjs/path": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/@protobufjs/path/-/path-1.1.2.tgz",
+      "integrity": "sha512-6JOcJ5Tm08dOHAbdR3GrvP+yUUfkjG5ePsHYczMFLq3ZmMkAD98cDgcT2iA1lJ9NVwFd4tH/iSSoe44YWkltEA==",
+      "license": "BSD-3-Clause"
+    },
+    "node_modules/@protobufjs/pool": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/@protobufjs/pool/-/pool-1.1.0.tgz",
+      "integrity": "sha512-0kELaGSIDBKvcgS4zkjz1PeddatrjYcmMWOlAuAPwAeccUrPHdUqo/J6LiymHHEiJT5NrF1UVwxY14f+fy4WQw==",
+      "license": "BSD-3-Clause"
+    },
+    "node_modules/@protobufjs/utf8": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/@protobufjs/utf8/-/utf8-1.1.0.tgz",
+      "integrity": "sha512-Vvn3zZrhQZkkBE8LSuW3em98c0FwgO4nxzv6OdSxPKJIEKY2bGbHn+mhGIPerzI4twdxaP8/0+06HBpwf345Lw==",
+      "license": "BSD-3-Clause"
+    },
     "node_modules/@radix-ui/primitive": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/@radix-ui/primitive/-/primitive-1.0.1.tgz",
@@ -1889,6 +1964,12 @@
         "@types/unist": "*"
       }
     },
+    "node_modules/@types/long": {
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/@types/long/-/long-4.0.2.tgz",
+      "integrity": "sha512-MqTGEo5bj5t157U6fA/BiDynNkn0YknVdh48CMPkTSpFTVmvao5UQmm7uEF6xBEo7qIMAlY/JSleYaE6VOdpaA==",
+      "license": "MIT"
+    },
     "node_modules/@types/mdast": {
       "version": "4.0.4",
       "resolved": "https://registry.npmjs.org/@types/mdast/-/mdast-4.0.4.tgz",
@@ -1908,7 +1989,6 @@
       "version": "22.19.1",
       "resolved": "https://registry.npmjs.org/@types/node/-/node-22.19.1.tgz",
       "integrity": "sha512-LCCV0HdSZZZb34qifBsyWlUmok6W7ouER+oQIGBScS8EsZsQbrtFTUrDX4hOl+CS6p7cnNC4td+qrSVGSCTUfQ==",
-      "dev": true,
       "license": "MIT",
       "dependencies": {
         "undici-types": "~6.21.0"
@@ -1918,8 +1998,7 @@
       "version": "15.7.15",
       "resolved": "https://registry.npmjs.org/@types/prop-types/-/prop-types-15.7.15.tgz",
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-      "license": "MIT",
-      "peer": true
+      "license": "MIT"
     },
     "node_modules/@types/react": {
       "version": "18.3.27",
@@ -2003,6 +2082,20 @@
         "vite": "^4.2.0 || ^5.0.0 || ^6.0.0 || ^7.0.0"
       }
     },
+    "node_modules/@xenova/transformers": {
+      "version": "2.17.2",
+      "resolved": "https://registry.npmjs.org/@xenova/transformers/-/transformers-2.17.2.tgz",
+      "integrity": "sha512-lZmHqzrVIkSvZdKZEx7IYY51TK0WDrC8eR0c5IMnBsO8di8are1zzw8BlLhyO2TklZKLN5UffNGs1IJwT6oOqQ==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "@huggingface/jinja": "^0.2.2",
+        "onnxruntime-web": "1.14.0",
+        "sharp": "^0.32.0"
+      },
+      "optionalDependencies": {
+        "onnxruntime-node": "1.14.0"
+      }
+    },
     "node_modules/agent-base": {
       "version": "7.1.4",
       "resolved": "https://registry.npmjs.org/agent-base/-/agent-base-7.1.4.tgz",
@@ -2064,6 +2157,97 @@
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       "license": "MIT"
     },
+    "node_modules/bare-events": {
+      "version": "2.8.2",
+      "resolved": "https://registry.npmjs.org/bare-events/-/bare-events-2.8.2.tgz",
+      "integrity": "sha512-riJjyv1/mHLIPX4RwiK+oW9/4c3TEUeORHKefKAKnZ5kyslbN+HXowtbaVEqt4IMUB7OXlfixcs6gsFeo/jhiQ==",
+      "license": "Apache-2.0",
+      "peerDependencies": {
+        "bare-abort-controller": "*"
+      },
+      "peerDependenciesMeta": {
+        "bare-abort-controller": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/bare-fs": {
+      "version": "4.5.2",
+      "resolved": "https://registry.npmjs.org/bare-fs/-/bare-fs-4.5.2.tgz",
+      "integrity": "sha512-veTnRzkb6aPHOvSKIOy60KzURfBdUflr5VReI+NSaPL6xf+XLdONQgZgpYvUuZLVQ8dCqxpBAudaOM1+KpAUxw==",
+      "license": "Apache-2.0",
+      "optional": true,
+      "dependencies": {
+        "bare-events": "^2.5.4",
+        "bare-path": "^3.0.0",
+        "bare-stream": "^2.6.4",
+        "bare-url": "^2.2.2",
+        "fast-fifo": "^1.3.2"
+      },
+      "engines": {
+        "bare": ">=1.16.0"
+      },
+      "peerDependencies": {
+        "bare-buffer": "*"
+      },
+      "peerDependenciesMeta": {
+        "bare-buffer": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/bare-os": {
+      "version": "3.6.2",
+      "resolved": "https://registry.npmjs.org/bare-os/-/bare-os-3.6.2.tgz",
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+      "license": "Apache-2.0",
+      "optional": true,
+      "engines": {
+        "bare": ">=1.14.0"
+      }
+    },
+    "node_modules/bare-path": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/bare-path/-/bare-path-3.0.0.tgz",
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+      "license": "Apache-2.0",
+      "optional": true,
+      "dependencies": {
+        "bare-os": "^3.0.1"
+      }
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+    "node_modules/bare-stream": {
+      "version": "2.7.0",
+      "resolved": "https://registry.npmjs.org/bare-stream/-/bare-stream-2.7.0.tgz",
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+      "license": "Apache-2.0",
+      "optional": true,
+      "dependencies": {
+        "streamx": "^2.21.0"
+      },
+      "peerDependencies": {
+        "bare-buffer": "*",
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@@ -4271,7 +5089,6 @@
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       "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-6.21.0.tgz",
       "integrity": "sha512-iwDZqg0QAGrg9Rav5H4n0M64c3mkR59cJ6wQp+7C4nI0gsmExaedaYLNO44eT4AtBBwjbTiGPMlt2Md0T9H9JQ==",
-      "dev": true,
       "license": "MIT"
     },
     "node_modules/unified": {
@@ -4435,6 +5252,12 @@
         }
       }
     },
+    "node_modules/util-deprecate": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
+      "integrity": "sha512-EPD5q1uXyFxJpCrLnCc1nHnq3gOa6DZBocAIiI2TaSCA7VCJ1UJDMagCzIkXNsUYfD1daK//LTEQ8xiIbrHtcw==",
+      "license": "MIT"
+    },
     "node_modules/vfile": {
       "version": "6.0.3",
       "resolved": "https://registry.npmjs.org/vfile/-/vfile-6.0.3.tgz",
@@ -4469,6 +5292,7 @@
       "integrity": "sha512-+Oxm7q9hDoLMyJOYfUYBuHQo+dkAloi33apOPP56pzj+vsdJDzr+j1NISE5pyaAuKL4A3UD34qd0lx5+kfKp2g==",
       "dev": true,
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "esbuild": "^0.25.0",
         "fdir": "^6.4.4",
@@ -4653,6 +5477,12 @@
         "node": ">=8"
       }
     },
+    "node_modules/wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha512-l4Sp/DRseor9wL6EvV2+TuQn63dMkPjZ/sp9XkghTEbV9KlPS1xUsZ3u7/IQO4wxtcFB4bgpQPRcR3QCvezPcQ==",
+      "license": "ISC"
+    },
     "node_modules/ws": {
       "version": "8.18.3",
       "resolved": "https://registry.npmjs.org/ws/-/ws-8.18.3.tgz",
diff --git a/package.json b/package.json
index fae4e76..b78e21d 100644
--- a/package.json
+++ b/package.json
@@ -15,6 +15,7 @@
     "@radix-ui/react-slot": "1.0.2",
     "@radix-ui/react-tooltip": "1.0.7",
     "@vercel/analytics": "^1.5.0",
+    "@xenova/transformers": "^2.17.2",
     "class-variance-authority": "0.7.0",
     "clsx": "2.1.1",
     "framer-motion": "11.1.7",
diff --git a/workers/worker.js b/workers/worker.js
new file mode 100644
index 0000000..739fd8c
--- /dev/null
+++ b/workers/worker.js
@@ -0,0 +1,55 @@
+
+import { pipeline } from '@xenova/transformers';
+
+class AutomaticSpeechRecognitionPipeline {
+    static task = 'automatic-speech-recognition';
+    static model = 'Xenova/whisper-tiny.en';
+    static instance = null;
+
+    static async getInstance(progress_callback = null) {
+        if (this.instance === null) {
+            this.instance = await pipeline(this.task, this.model, { quantized: true, progress_callback });
+        }
+        return this.instance;
+    }
+}
+
+self.addEventListener('message', async (event) => {
+    const message = event.data;
+
+    if (message.type === 'load') {
+        try {
+            await AutomaticSpeechRecognitionPipeline.getInstance((data) => {
+                self.postMessage({
+                    type: 'download',
+                    data: data
+                });
+            });
+            self.postMessage({ type: 'ready' });
+        } catch (error) {
+            self.postMessage({ type: 'error', data: error.message });
+        }
+    } else if (message.type === 'generate') {
+        try {
+            const transcriber = await AutomaticSpeechRecognitionPipeline.getInstance();
+            const audio = message.audio;
+
+            // Run transcription
+            const output = await transcriber(audio, {
+                chunk_length_s: 30,
+                stride_length_s: 5,
+                language: 'english',
+                task: 'transcribe',
+                return_timestamps: false // or true if we want timestamps
+            });
+
+            self.postMessage({
+                type: 'result',
+                data: output.text
+            });
+
+        } catch (error) {
+            self.postMessage({ type: 'error', data: error.message });
+        }
+    }
+});