demo

Picovoice · mrrostam · Jan 15, 2024 · Jan 9, 2024 · Jan 9, 2024 · Jan 9, 2024
commit 5a3f98aa7fc4872f36d07ff260afaac18532a34c
diff --git a/demo/web/.gitignore b/demo/web/.gitignore
@@ -0,0 +1,7 @@
+node_modules
+.rts2_cache/
+.idea/
+dist/
+*.log
+.DS_Store
+models/*
diff --git a/demo/web/README.md b/demo/web/README.md
@@ -0,0 +1,35 @@
+# falcon-web-demo
+
+This is a basic demo to show how to use Falcon for web browsers, using the IIFE version of the library (i.e. an HTML script tag). It instantiates a Falcon worker engine and uses it with the [@picovoice/web-voice-processor](https://www.npmjs.com/package/@picovoice/web-voice-processor) to access (and automatically downsample) microphone audio.
+
+## AccessKey
+
+Falcon requires a valid Picovoice `AccessKey` at initialization. `AccessKey` acts as your credentials when using Falcon SDKs.
+You can get your `AccessKey` for free. Make sure to keep your `AccessKey` secret.
+Signup or Login to [Picovoice Console](https://console.picovoice.ai/) to get your `AccessKey`.
+
+## Install & run
+
+Use `yarn` or `npm` to install the dependencies, and the `start` script to start a local web server hosting the demo.
+
+```console
+yarn
+yarn start
+```
+
+(or)
+
+```console
+npm install
+npm run start
+```
+
+Open `localhost:5000` in your web browser, as hinted at in the output:
+
+```console
+Available on:
+  http://localhost:5000
+Hit CTRL-C to stop the server
+```
+
+Wait until Falcon and the WebVoiceProcessor have initialized. Choose an audio file or record audio to diarize.
diff --git a/demo/web/index.html b/demo/web/index.html
@@ -0,0 +1,192 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <script src="node_modules/@picovoice/falcon-web/dist/iife/index.js"></script>
+    <script src="node_modules/@picovoice/web-voice-processor/dist/iife/index.js"></script>
+    <script src="models/falconModel.js"></script>
+    <script type="application/javascript">
+      let falcon = null;
+
+      window.onload = function () {
+        const audioContext = new (window.AudioContext ||
+          window.webKitAudioContext)({ sampleRate: 16000 });
+
+        function readAudioFile(selectedFile, callback) {
+          let reader = new FileReader();
+          reader.onload = function (ev) {
+            let wavBytes = reader.result;
+            audioContext.decodeAudioData(wavBytes, callback);
+          };
+          reader.readAsArrayBuffer(selectedFile);
+        }
+
+        const fileSelector = document.getElementById("audioFile");
+        fileSelector.addEventListener("change", (event) => {
+          writeMessage("Loading audio file...");
+          const fileList = event.target.files;
+          readAudioFile(fileList[0], async (audioBuffer) => {
+            const f32PCM = audioBuffer.getChannelData(0);
+            const i16PCM = new Int16Array(f32PCM.length);
+
+            const INT16_MAX = 32767;
+            const INT16_MIN = -32768;
+            i16PCM.set(
+              f32PCM.map((f) => {
+                let i = Math.trunc(f * INT16_MAX);
+                if (f > INT16_MAX) i = INT16_MAX;
+                if (f < INT16_MIN) i = INT16_MIN;
+                return i;
+              })
+            );
+
+            writeMessage("Diarizing audio file...");
+            const { segments } = await falcon.process(i16PCM, {
+              transfer: true,
+            });
+            setWordTable(segments);
+            writeMessage("Diarizing audio file... done!");
+          });
+        });
+
+        const displayTimer = document.getElementById("displayTimer");
+        const recordButton = document.getElementById("recordAudio");
+        const stopRecord = document.getElementById("stopRecord");
+
+        let timer = null;
+        let currentTimer = 0.0;
+        let audioData = [];
+        const recorderEngine = {
+          onmessage: (event) => {
+            switch (event.data.command) {
+              case "process":
+                audioData.push(event.data.inputFrame);
+                break;
+            }
+          },
+        };
+        recordButton.addEventListener("click", async () => {
+          displayTimer.style.display = "inline";
+          stopRecord.style.display = "inline";
+          recordButton.style.display = "none";
+
+          currentTimer = 0.0;
+          audioData = [];
+          try {
+            writeMessage("Recording audio...");
+            await window.WebVoiceProcessor.WebVoiceProcessor.subscribe(
+              recorderEngine
+            );
+            timer = setInterval(() => {
+              currentTimer += 0.1;
+              displayTimer.innerText = `${currentTimer.toFixed(1)} / 120`;
+              if (currentTimer === 120) {
+                stopRecord.click();
+              }
+            }, 100);
+          } catch (e) {
+            writeMessage(e);
+          }
+        });
+
+        stopRecord.addEventListener("click", async () => {
+          displayTimer.style.display = "none";
+          stopRecord.style.display = "none";
+          recordButton.style.display = "inline";
+
+          await window.WebVoiceProcessor.WebVoiceProcessor.unsubscribe(
+            recorderEngine
+          );
+          clearInterval(timer);
+
+          const frames = new Int16Array(audioData.length * 512);
+          for (let i = 0; i < audioData.length; i++) {
+            frames.set(audioData[i], i * 512);
+          }
+
+          writeMessage("Diarizing audio file...");
+          const { segments } = await falcon.process(frames, {
+            transfer: true,
+          });
+          setWordTable(segments);
+          writeMessage("Diarizing audio file... done!");
+        });
+      };
+
+      function writeMessage(message) {
+        console.log(message);
+        document.getElementById("status").innerHTML = message;
+      }
+
+      function setWordTable(segments) {
+        let html = `
+          <tr>
+            <th>startSec</th>
-            <th>startSec</th>
+            <th>Start time (s)</th>
-            <th>startSec</th>
+            <th>Start time (s)</th>
+            <th>endSec</th>
+            <th>speaker tag</th>
+          </tr>
+        `;
+        segments.forEach((obj) => {
+          html += `
+            <tr>
+              <td>${obj.startSec.toFixed(3)}</td>
+              <td>${obj.endSec.toFixed(3)}</td>
+              <td>${obj.speakerTag}</td>
+            </tr>
+          `;
+        });
+        document.getElementById("segments").innerHTML = html;
+      }
+
+      async function startFalcon(accessKey) {
+        writeMessage("Falcon is loading. Please wait...");
+        try {
+          falcon = await FalconWeb.FalconWorker.create(accessKey, falconModel);
+          document.getElementById("control").style.display = "block";
+          writeMessage("Falcon worker ready!");
+        } catch (err) {
+          writeMessage(err);
+        }
+      }
+    </script>
+  </head>
+  <body>
+    <h1>Falcon Web Demo</h1>
+    <p>This demo uses Falcon for Web to:</p>
+    <ol>
+      <li>Create an instance of Falcon with the default language model.</li>
+      <li>
+        Process/diarize an audio file or a recorded audio stream in browser: the
+        data does not leave the browser while Falcon processes the audio data.
+      </li>
+    </ol>
+    After entering the AccessKey, click the "Start Falcon" button.
+    <hr />
+    <label for="accessKey"
+      >AccessKey obtained from
+      <a href="https://console.picovoice.ai/">Picovoice Console</a>:</label
+    >
+    <input type="text" id="accessKey" name="accessKey" />
+    <input
+      type="button"
+      id="submit"
+      value="Start Falcon"
+      onclick="startFalcon(document.getElementById('accessKey').value)"
+    />
+    <hr />
+    <div id="control" style="display: none">
+      <label for="audioFile">Choose audio file to diarize:</label>
+      <input type="file" id="audioFile" name="audioFile" />
+      <p><b>OR</b></p>
+      <label for="recordAudio"
+        >Record audio to diarize (up to 2 minutes):</label
+      >
+      <button id="recordAudio">Record Audio</button>
+      <span id="displayTimer" style="display: none"></span>
+      <button id="stopRecord" style="display: none">Stop Recording</button>
+      <hr />
+    </div>
+    <div id="status" style="white-space: pre"></div>
+    <br />
+    <table id="segments"></table>
+  </body>
+</html>
diff --git a/demo/web/package.json b/demo/web/package.json
@@ -0,0 +1,26 @@
+{
+  "name": "falcon-web-demo",
+  "version": "1.0.0",
+  "description": "A basic demo to show how to use Falcon for web browsers, using the IIFE version of the library",
+  "main": "index.js",
+  "private": true,
+  "scripts": {
+    "start": "node scripts/run_demo.js"
+  },
+  "keywords": [
+    "Picovoice",
+    "Falcon",
+    "browser",
+    "voice ai",
+    "speech recognition"
+  ],
+  "author": "Picovoice Inc",
+  "license": "Apache-2.0",
+  "dependencies": {
+    "@picovoice/falcon-web": "file:../../binding/web",
+    "@picovoice/web-voice-processor": "~4.0.8"
+  },
+  "devDependencies": {
+    "http-server": "^14.0.0"
+  }
+}
diff --git a/demo/web/scripts/run_demo.js b/demo/web/scripts/run_demo.js
@@ -0,0 +1,40 @@
+const child_process = require("child_process");
+const fs = require("fs");
+const path = require("path");
+
+const rootDir = path.join(__dirname, "..", "..", "..");
+
+let outputDirectory = path.join(__dirname, "..", "models");
+if (fs.existsSync(outputDirectory)) {
+  fs.readdirSync(outputDirectory).forEach((f) => {
+    fs.unlinkSync(path.join(outputDirectory, f));
+  });
+} else {
+  fs.mkdirSync(outputDirectory, { recursive: true });
+}
+
+const modelDir = path.join(rootDir, "lib", "common");
+const modelName = "falcon_params.pv";
+fs.copyFileSync(
+  path.join(modelDir, modelName),
+  path.join(outputDirectory, modelName)
+);
+
+fs.writeFileSync(
+  path.join(outputDirectory, "falconModel.js"),
+  `const falconModel = {
+  publicPath: "models/${modelName}",
+  forceWrite: true,
+};
+
+(function () {
+  if (typeof module !== "undefined" && typeof module.exports !== "undefined")
+    module.exports = falconModel;
+})();`
+);
+
+const command = (process.platform === "win32") ? "npx.cmd" : "npx";
+
+child_process.fork("http-server", ["-a", "localhost", "-p", "5000"], {
+  execPath: command,
+});
diff --git a/demo/web/yarn.lock b/demo/web/yarn.lock
@@ -0,0 +1,324 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+"@picovoice/falcon-web@file:../../binding/web":
+  version "1.0.0"
+  dependencies:
+    "@picovoice/web-utils" "=1.3.1"
+
+"@picovoice/web-utils@=1.3.1":
+  version "1.3.1"
+  resolved "https://registry.yarnpkg.com/@picovoice/web-utils/-/web-utils-1.3.1.tgz#d417e98604a650b54a8e03669015ecf98c2383ec"
+  integrity sha512-jcDqdULtTm+yJrnHDjg64hARup+Z4wNkYuXHNx6EM8+qZkweBq9UA6XJrHAlUkPnlkso4JWjaIKhz3x8vZcd3g==
+  dependencies:
+    commander "^9.2.0"
+
+"@picovoice/web-voice-processor@~4.0.8":
+  version "4.0.8"
+  resolved "https://registry.yarnpkg.com/@picovoice/web-voice-processor/-/web-voice-processor-4.0.8.tgz#95247a5393cac4d16490a53feb0f413c902ee5fa"
+  integrity sha512-/OSHn8YKniMo0jP5EwGimLOxvLQl/Yx4Hs+LydNmoSu4hfBrDdzhhfhB79118uDiK4aUUKx2A/RAD9TG0mQ/ng==
+  dependencies:
+    "@picovoice/web-utils" "=1.3.1"
+
+ansi-styles@^4.1.0:
+  version "4.3.0"
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+  dependencies:
+    color-convert "^2.0.1"
+
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+  version "2.6.4"
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+    lodash "^4.17.14"
+
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+  version "2.0.1"
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+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/html-encoding-sniffer/-/html-encoding-sniffer-3.0.0.tgz#2cb1a8cf0db52414776e5b2a7a04d5dd98158de9"
+  integrity sha512-oWv4T4yJ52iKrufjnyZPkrN0CH3QnrUqdB6In1g5Fe1mia8GmF36gnfNySxoZtxD5+NmYw1EElVXiBk93UeskA==
+  dependencies:
+    whatwg-encoding "^2.0.0"
+
+http-proxy@^1.18.1:
+  version "1.18.1"
+  resolved "https://registry.yarnpkg.com/http-proxy/-/http-proxy-1.18.1.tgz#401541f0534884bbf95260334e72f88ee3976549"
+  integrity sha512-7mz/721AbnJwIVbnaSv1Cz3Am0ZLT/UBwkC92VlxhXv/k/BBQfM2fXElQNC27BVGr0uwUpplYPQM9LnaBMR5NQ==
+  dependencies:
+    eventemitter3 "^4.0.0"
+    follow-redirects "^1.0.0"
+    requires-port "^1.0.0"
+
+http-server@^14.0.0:
+  version "14.1.1"
+  resolved "https://registry.yarnpkg.com/http-server/-/http-server-14.1.1.tgz#d60fbb37d7c2fdff0f0fbff0d0ee6670bd285e2e"
+  integrity sha512-+cbxadF40UXd9T01zUHgA+rlo2Bg1Srer4+B4NwIHdaGxAGGv59nYRnGGDJ9LBk7alpS0US+J+bLLdQOOkJq4A==
+  dependencies:
+    basic-auth "^2.0.1"
+    chalk "^4.1.2"
+    corser "^2.0.1"
+    he "^1.2.0"
+    html-encoding-sniffer "^3.0.0"
+    http-proxy "^1.18.1"
+    mime "^1.6.0"
+    minimist "^1.2.6"
+    opener "^1.5.1"
+    portfinder "^1.0.28"
+    secure-compare "3.0.1"
+    union "~0.5.0"
+    url-join "^4.0.1"
+
+iconv-lite@0.6.3:
+  version "0.6.3"
+  resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.6.3.tgz#a52f80bf38da1952eb5c681790719871a1a72501"
+  integrity sha512-4fCk79wshMdzMp2rH06qWrJE4iolqLhCUH+OiuIgU++RB0+94NlDL81atO7GX55uUKueo0txHNtvEyI6D7WdMw==
+  dependencies:
+    safer-buffer ">= 2.1.2 < 3.0.0"
+
+lodash@^4.17.14:
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
+  integrity sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==
+
+mime@^1.6.0:
+  version "1.6.0"
+  resolved "https://registry.yarnpkg.com/mime/-/mime-1.6.0.tgz#32cd9e5c64553bd58d19a568af452acff04981b1"
+  integrity sha512-x0Vn8spI+wuJ1O6S7gnbaQg8Pxh4NNHb7KSINmEWKiPE4RKOplvijn+NkmYmmRgP68mc70j2EbeTFRsrswaQeg==
+
+minimist@^1.2.6:
+  version "1.2.8"
+  resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.8.tgz#c1a464e7693302e082a075cee0c057741ac4772c"
+  integrity sha512-2yyAR8qBkN3YuheJanUpWC5U3bb5osDywNB8RzDVlDwDHbocAJveqqj1u8+SVD7jkWT4yvsHCpWqqWqAxb0zCA==
+
+mkdirp@^0.5.6:
+  version "0.5.6"
+  resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-0.5.6.tgz#7def03d2432dcae4ba1d611445c48396062255f6"
+  integrity sha512-FP+p8RB8OWpF3YZBCrP5gtADmtXApB5AMLn+vdyA+PyxCjrCs00mjyUozssO33cwDeT3wNGdLxJ5M//YqtHAJw==
+  dependencies:
+    minimist "^1.2.6"
+
+ms@^2.1.1:
+  version "2.1.3"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.3.tgz#574c8138ce1d2b5861f0b44579dbadd60c6615b2"
+  integrity sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA==
+
+object-inspect@^1.9.0:
+  version "1.13.1"
+  resolved "https://registry.yarnpkg.com/object-inspect/-/object-inspect-1.13.1.tgz#b96c6109324ccfef6b12216a956ca4dc2ff94bc2"
+  integrity sha512-5qoj1RUiKOMsCCNLV1CBiPYE10sziTsnmNxkAI/rZhiD63CF7IqdFGC/XzjWjpSgLf0LxXX3bDFIh0E18f6UhQ==
+
+opener@^1.5.1:
+  version "1.5.2"
+  resolved "https://registry.yarnpkg.com/opener/-/opener-1.5.2.tgz#5d37e1f35077b9dcac4301372271afdeb2a13598"
+  integrity sha512-ur5UIdyw5Y7yEj9wLzhqXiy6GZ3Mwx0yGI+5sMn2r0N0v3cKJvUmFH5yPP+WXh9e0xfyzyJX95D8l088DNFj7A==
+
+portfinder@^1.0.28:
+  version "1.0.32"
+  resolved "https://registry.yarnpkg.com/portfinder/-/portfinder-1.0.32.tgz#2fe1b9e58389712429dc2bea5beb2146146c7f81"
+  integrity sha512-on2ZJVVDXRADWE6jnQaX0ioEylzgBpQk8r55NE4wjXW1ZxO+BgDlY6DXwj20i0V8eB4SenDQ00WEaxfiIQPcxg==
+  dependencies:
+    async "^2.6.4"
+    debug "^3.2.7"
+    mkdirp "^0.5.6"
+
+qs@^6.4.0:
+  version "6.11.2"
+  resolved "https://registry.yarnpkg.com/qs/-/qs-6.11.2.tgz#64bea51f12c1f5da1bc01496f48ffcff7c69d7d9"
+  integrity sha512-tDNIz22aBzCDxLtVH++VnTfzxlfeK5CbqohpSqpJgj1Wg/cQbStNAz3NuqCs5vV+pjBsK4x4pN9HlVh7rcYRiA==
+  dependencies:
+    side-channel "^1.0.4"
+
+requires-port@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/requires-port/-/requires-port-1.0.0.tgz#925d2601d39ac485e091cf0da5c6e694dc3dcaff"
+  integrity sha512-KigOCHcocU3XODJxsu8i/j8T9tzT4adHiecwORRQ0ZZFcp7ahwXuRU1m+yuO90C5ZUyGeGfocHDI14M3L3yDAQ==
+
+safe-buffer@5.1.2:
+  version "5.1.2"
+  resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.2.tgz#991ec69d296e0313747d59bdfd2b745c35f8828d"
+  integrity sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==
+
+"safer-buffer@>= 2.1.2 < 3.0.0":
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/safer-buffer/-/safer-buffer-2.1.2.tgz#44fa161b0187b9549dd84bb91802f9bd8385cd6a"
+  integrity sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==
+
+secure-compare@3.0.1:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/secure-compare/-/secure-compare-3.0.1.tgz#f1a0329b308b221fae37b9974f3d578d0ca999e3"
+  integrity sha512-AckIIV90rPDcBcglUwXPF3kg0P0qmPsPXAj6BBEENQE1p5yA1xfmDJzfi1Tappj37Pv2mVbKpL3Z1T+Nn7k1Qw==
+
+set-function-length@^1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/set-function-length/-/set-function-length-1.1.1.tgz#4bc39fafb0307224a33e106a7d35ca1218d659ed"
+  integrity sha512-VoaqjbBJKiWtg4yRcKBQ7g7wnGnLV3M8oLvVWwOk2PdYY6PEFegR1vezXR0tw6fZGF9csVakIRjrJiy2veSBFQ==
+  dependencies:
+    define-data-property "^1.1.1"
+    get-intrinsic "^1.2.1"
+    gopd "^1.0.1"
+    has-property-descriptors "^1.0.0"
+
+side-channel@^1.0.4:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/side-channel/-/side-channel-1.0.4.tgz#efce5c8fdc104ee751b25c58d4290011fa5ea2cf"
+  integrity sha512-q5XPytqFEIKHkGdiMIrY10mvLRvnQh42/+GoBlFW3b2LXLE2xxJpZFdm94we0BaoV3RwJyGqg5wS7epxTv0Zvw==
+  dependencies:
+    call-bind "^1.0.0"
+    get-intrinsic "^1.0.2"
+    object-inspect "^1.9.0"
+
+supports-color@^7.1.0:
+  version "7.2.0"
+  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-7.2.0.tgz#1b7dcdcb32b8138801b3e478ba6a51caa89648da"
+  integrity sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw==
+  dependencies:
+    has-flag "^4.0.0"
+
+union@~0.5.0:
+  version "0.5.0"
+  resolved "https://registry.yarnpkg.com/union/-/union-0.5.0.tgz#b2c11be84f60538537b846edb9ba266ba0090075"
+  integrity sha512-N6uOhuW6zO95P3Mel2I2zMsbsanvvtgn6jVqJv4vbVcz/JN0OkL9suomjQGmWtxJQXOCqUJvquc1sMeNz/IwlA==
+  dependencies:
+    qs "^6.4.0"
+
+url-join@^4.0.1:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/url-join/-/url-join-4.0.1.tgz#b642e21a2646808ffa178c4c5fda39844e12cde7"
+  integrity sha512-jk1+QP6ZJqyOiuEI9AEWQfju/nB2Pw466kbA0LEZljHwKeMgd9WrAEgEGxjPDD2+TNbbb37rTyhEfrCXfuKXnA==
+
+whatwg-encoding@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/whatwg-encoding/-/whatwg-encoding-2.0.0.tgz#e7635f597fd87020858626805a2729fa7698ac53"
+  integrity sha512-p41ogyeMUrw3jWclHWTQg1k05DSVXPLcVxRTYsXUk+ZooOCZLcoYgPZ/HL/D/N+uQPOtcp1me1WhBEaX02mhWg==
+  dependencies:
+    iconv-lite "0.6.3"