v2.1 web

.github/workflows/web-demos.yml

@@ -38,5 +38,11 @@ jobs:
     - name: Pre-build dependencies
       run: npm install yarn
 
+    # ************** REMOVE AFTER RELEASE ********************
+    - name: Build Local Packages
+      run: yarn && yarn copywasm && yarn build
+      working-directory: binding/web
+    # ********************************************************
+
     - name: Install dependencies
       run: yarn install

binding/web/.gitignore

@@ -4,3 +4,4 @@ lib/pv_cheetah*.wasm
 cypress/fixtures/audio_samples/*
 test/cheetah_params*.js
 test/cheetah_params*.pv
+test/test_data.json

binding/web/README.md

@@ -191,6 +191,13 @@ Terminate `CheetahWorker` instance:
 await handle.terminate();
 ```
 
+### Language Model
+
+Default models for supported languages can be found in [lib/common](../../lib/common).
+
+Create custom language models using the [Picovoice Console](https://console.picovoice.ai/). Here you can train
+language models with custom vocabulary and boost words in the existing vocabulary.
+
 ## Demo
 
 For example usage refer to our [Web demo application](https://github.com/Picovoice/cheetah/tree/master/demo/web).

binding/web/package.json

@@ -3,7 +3,7 @@
   "description": "Cheetah Speech-to-Text engine for web browsers (via WebAssembly)",
   "author": "Picovoice Inc",
   "license": "Apache-2.0",
-  "version": "2.0.0",
+  "version": "2.1.0",
   "keywords": [
     "cheetah",
     "web",
@@ -35,7 +35,7 @@
     "test-perf": "cypress run --spec test/cheetah_perf.test.ts"
   },
   "dependencies": {
-    "@picovoice/web-utils": "=1.3.1"
+    "@picovoice/web-utils": "=1.4.3"
   },
   "devDependencies": {
     "@babel/core": "^7.21.3",

binding/web/scripts/setup_test.js

@@ -15,6 +15,16 @@ const paramsSourceDirectory = join(
   'common',
 );
 
+const testDataSource = join(
+  __dirname,
+  '..',
+  '..',
+  '..',
+  'resources',
+  '.test',
+  'test_data.json'
+);
+
 const sourceDirectory = join(
   __dirname,
   "..",
@@ -30,6 +40,8 @@ try {
     fs.copyFileSync(join(paramsSourceDirectory, file), join(testDirectory, file));
   });
 
+  fs.copyFileSync(testDataSource, join(testDirectory, 'test_data.json'));
+
   fs.mkdirSync(join(fixturesDirectory, 'audio_samples'), { recursive: true });
   fs.readdirSync(join(sourceDirectory, 'audio_samples')).forEach(file => {
     fs.copyFileSync(join(sourceDirectory, 'audio_samples', file), join(fixturesDirectory, 'audio_samples', file));

binding/web/src/cheetah.ts

@@ -452,7 +452,7 @@ export class Cheetah {
     // A WebAssembly page has a constant size of 64KiB. -> 1MiB ~= 16 pages
     const memory = new WebAssembly.Memory({ initial: 3700 });
 
-    const memoryBufferUint8 = new Uint8Array(memory.buffer);
+    let memoryBufferUint8 = new Uint8Array(memory.buffer);
 
     const pvError = new PvError();
 
@@ -551,14 +551,23 @@ export class Cheetah {
       throw new CheetahErrors.CheetahOutOfMemoryError('malloc failed: Cannot allocate memory');
     }
 
-    const memoryBufferView = new DataView(memory.buffer);
+    let memoryBufferView = new DataView(memory.buffer);
 
     const status = await pv_cheetah_init(
       accessKeyAddress,
       modelPathAddress,
       endpointDurationSec,
       (enableAutomaticPunctuation) ? 1 : 0,
       objectAddressAddress);
+
+    if (memoryBufferView.buffer.byteLength === 0) {
+      memoryBufferView = new DataView(memory.buffer);
+    }
+
+    if (memoryBufferUint8.buffer.byteLength === 0) {
+      memoryBufferUint8 = new Uint8Array(memory.buffer);
+    }
+
     if (status !== PV_STATUS_SUCCESS) {
       const messageStack = await Cheetah.getMessageStack(
         pv_get_error_stack,
@@ -599,7 +608,7 @@ export class Cheetah {
       frameLength: frameLength,
       sampleRate: sampleRate,
       version: version,
-      
+
       objectAddress: objectAddress,
       inputBufferAddress: inputBufferAddress,
       isEndpointAddress: isEndpointAddress,
@@ -625,7 +634,7 @@ export class Cheetah {
     memoryBufferUint8: Uint8Array,
   ): Promise<string[]> {
     const status = await pv_get_error_stack(messageStackAddressAddressAddress, messageStackDepthAddress);
-    if (status != PvStatus.SUCCESS) {
+    if (status !== PvStatus.SUCCESS) {
       throw pvStatusToException(status, "Unable to get Cheetah error state");
     }
 

binding/web/test/cheetah.test.ts

@@ -1,19 +1,12 @@
 import { Cheetah, CheetahWorker } from "../";
-import { CheetahError } from "../dist/types/cheetah_error";
+import { CheetahError } from "../dist/types/cheetah_errors";
+import testData from './test_data.json';
 
 // @ts-ignore
 import cheetahParams from "./cheetah_params";
 import { PvModel } from '@picovoice/web-utils';
 
-const ACCESS_KEY: string = Cypress.env("ACCESS_KEY");
-
-const testParam = {
-  language: 'en',
-  audio_file: 'test.wav',
-  transcript: 'Mr. Quilter is the apostle of the middle classes and we are glad to welcome his gospel.',
-  punctuations: ['.'],
-  error_rate: 0.025,
-};
+const ACCESS_KEY: string = Cypress.env('ACCESS_KEY');
 
 const levenshteinDistance = (words1: string[], words2: string[]) => {
   const res = Array.from(Array(words1.length + 1), () => new Array(words2.length + 1));
@@ -37,8 +30,10 @@ const levenshteinDistance = (words1: string[], words2: string[]) => {
 
 const wordErrorRate = (reference: string, hypothesis: string, useCER = false): number => {
   const splitter = (useCER) ? '' : ' ';
-  const ed = levenshteinDistance(reference.split(splitter), hypothesis.split(splitter));
-  return ed / reference.length;
+  const refWords = reference.split(splitter);
+  const hypWords = hypothesis.split(splitter);
+  const ed = levenshteinDistance(refWords, hypWords);
+  return ed / refWords.length;
 };
 
 function delay(time: number) {
@@ -131,7 +126,7 @@ const runProcTest = async (
         model,
         {
           enableAutomaticPunctuation: enablePunctuation,
-          processErrorCallback: (error: string) => {
+          processErrorCallback: (error: CheetahError) => {
             reject(error);
           }
         }
@@ -166,7 +161,7 @@ const runProcTest = async (
 
 describe("Cheetah Binding", function () {
   it(`should return process and flush error message stack`, async () => {
-    let errors: [CheetahError] = [];
+    let errors: CheetahError[] = [];
 
     const runProcess = () => new Promise<void>(async resolve => {
       const cheetah = await Cheetah.create(
@@ -285,45 +280,59 @@ describe("Cheetah Binding", function () {
       });
     });
 
-    it(`should be able to process (${testParam.language}) (${instanceString})`, () => {
-      try {
-        cy.getFramesFromFile(`audio_samples/${testParam.audio_file}`).then( async pcm => {
-          const suffix = (testParam.language === 'en') ? '' : `_${testParam.language}`;
-          await runProcTest(
-            instance,
-            pcm,
-            testParam.punctuations,
-            testParam.transcript,
-            testParam.error_rate,
-            {
-              model: { publicPath: `/test/cheetah_params${suffix}.pv`, forceWrite: true },
-              enablePunctuation: false,
-              useCER: (testParam.language === 'ja')
-            });
-        });
-      } catch (e) {
-        expect(e).to.be.undefined;
-      }
-    });
+    for (const testParam of testData.tests.language_tests) {
+      it(`should be able to process (${testParam.language}) (${instanceString})`, () => {
+        try {
+          cy.getFramesFromFile(`audio_samples/${testParam.audio_file}`).then(
+            async pcm => {
+              const suffix =
+                testParam.language === 'en' ? '' : `_${testParam.language}`;
+              await runProcTest(
+                instance,
+                pcm,
+                testParam.punctuations,
+                testParam.transcript,
+                testParam.error_rate,
+                {
+                  model: {
+                    publicPath: `/test/cheetah_params${suffix}.pv`,
+                    forceWrite: true,
+                  },
+                }
+              );
+            }
+          );
+        } catch (e) {
+          expect(e).to.be.undefined;
+        }
+      });
 
-    it(`should be able to process with punctuation (${testParam.language}) (${instanceString})`, () => {
-      try {
-        cy.getFramesFromFile(`audio_samples/${testParam.audio_file}`).then( async pcm => {
-          const suffix = (testParam.language === 'en') ? '' : `_${testParam.language}`;
-          await runProcTest(
-            instance,
-            pcm,
-            testParam.punctuations,
-            testParam.transcript,
-            testParam.error_rate,
-            {
-              model: { publicPath: `/test/cheetah_params${suffix}.pv`, forceWrite: true },
-              useCER: (testParam.language === 'ja')
-            });
-        });
-      } catch (e) {
-        expect(e).to.be.undefined;
-      }
-    });
+      it(`should be able to process with punctuation (${testParam.language}) (${instanceString})`, () => {
+        try {
+          cy.getFramesFromFile(`audio_samples/${testParam.audio_file}`).then(
+            async pcm => {
+              const suffix =
+                testParam.language === 'en' ? '' : `_${testParam.language}`;
+              await runProcTest(
+                instance,
+                pcm,
+                testParam.punctuations,
+                testParam.transcript,
+                testParam.error_rate,
+                {
+                  model: {
+                    publicPath: `/test/cheetah_params${suffix}.pv`,
+                    forceWrite: true,
+                  },
+                  enablePunctuation: true,
+                }
+              );
+            }
+          );
+        } catch (e) {
+          expect(e).to.be.undefined;
+        }
+      });
+    }
   }
 });

binding/web/yarn.lock

@@ -1100,12 +1100,12 @@
     "@nodelib/fs.scandir" "2.1.5"
     fastq "^1.6.0"
 
-"@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==
+"@picovoice/web-utils@=1.4.3":
+  version "1.4.3"
+  resolved "https://registry.yarnpkg.com/@picovoice/web-utils/-/web-utils-1.4.3.tgz#1de0b20d6080c18d295c6df37c09d88bf7c4f555"
+  integrity sha512-7JN3YYsSD9Gtce6YKG3XqpX49dkeu7jTdbox7rHQA/X/Q3zxopXA9zlCKSq6EIjFbiX2iuzDKUx1XrFa3d8c0w==
   dependencies:
-    commander "^9.2.0"
+    commander "^10.0.1"
 
 "@rollup/plugin-babel@^6.0.3":
   version "6.0.4"
@@ -1679,6 +1679,11 @@ combined-stream@^1.0.6, combined-stream@~1.0.6:
   dependencies:
     delayed-stream "~1.0.0"
 
+commander@^10.0.1:
+  version "10.0.1"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-10.0.1.tgz#881ee46b4f77d1c1dccc5823433aa39b022cbe06"
+  integrity sha512-y4Mg2tXshplEbSGzx7amzPwKKOCGuoSRP/CjEdwwk0FOGlUbq6lKuoyDZTNZkmxHdJtp54hdfY/JUrdL7Xfdug==
+
 commander@^2.20.0:
   version "2.20.3"
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.20.3.tgz#fd485e84c03eb4881c20722ba48035e8531aeb33"
@@ -1689,11 +1694,6 @@ commander@^5.1.0:
   resolved "https://registry.yarnpkg.com/commander/-/commander-5.1.0.tgz#46abbd1652f8e059bddaef99bbdcb2ad9cf179ae"
   integrity sha512-P0CysNDQ7rtVw4QIQtm+MRxV66vKFSvlsQvGYXZWR3qFU0jlMKHZZZgw8e+8DSah4UDKMqnknRDQz+xuQXQ/Zg==
 
-commander@^9.2.0:
-  version "9.5.0"
-  resolved "https://registry.yarnpkg.com/commander/-/commander-9.5.0.tgz#bc08d1eb5cedf7ccb797a96199d41c7bc3e60d30"
-  integrity sha512-KRs7WVDKg86PWiuAqhDrAQnTXZKraVcCc6vFdL14qrZ/DcWwuRo7VoiYXalXO7S5GKpqYiVEwCbgFDfxNHKJBQ==
-
 common-tags@^1.8.0:
   version "1.8.2"
   resolved "https://registry.yarnpkg.com/common-tags/-/common-tags-1.8.2.tgz#94ebb3c076d26032745fd54face7f688ef5ac9c6"

demo/web/.gitignore

@@ -4,4 +4,4 @@ node_modules
 dist/
 *.log
 .DS_Store
-cheetah_params.js
+models/*

demo/web/README.md

@@ -10,18 +10,20 @@ Signup or Login to [Picovoice Console](https://console.picovoice.ai/) to get you
 
 ## Install & run
 
-Use `yarn` or `npm` to install the dependencies, and the `start` script to start a local web server hosting the demo.
+Use `yarn` or `npm` to install the dependencies, and the `start` script with a language code
+to start a local web server hosting the demo in the language of your choice (e.g. `sv` -> Swedish, `zh` -> Mandarin).
+To see a list of available languages, run `start` without a language code.
 
 ```console
 yarn
-yarn start
+yarn start ${LANGUAGE}
 ```
 
 (or)
 
 ```console
 npm install
-npm run start
+npm run start ${LANGUAGE}
 ```
 
 Open `localhost:5000` in your web browser, as hinted at in the output:
@@ -32,4 +34,4 @@ Available on:
 Hit CTRL-C to stop the server
 ```
 
-Wait until Cheetah and the WebVoiceProcessor have initialized. Say any phrase and  Cheetah will start transcribing in real time.
+Wait until Cheetah and the WebVoiceProcessor have initialized. Choose an audio file or record audio to transcribe.

demo/web/index.html

@@ -3,7 +3,7 @@
   <head>
     <script src="node_modules/@picovoice/web-voice-processor/dist/iife/index.js"></script>
     <script src="node_modules/@picovoice/cheetah-web/dist/iife/index.js"></script>
-    <script src="cheetah_params.js"></script>
+    <script src="models/cheetahModel.js"></script>
     <script type="application/javascript">
       let cheetah = null;
 
@@ -29,7 +29,7 @@
           cheetah = await CheetahWeb.CheetahWorker.create(
             accessKey,
             cheetahTranscriptionCallback,
-            { base64: modelParams },
+            cheetahModel,
             { enableAutomaticPunctuation: true }
           );
 

demo/web/package.json

@@ -5,8 +5,7 @@
   "main": "index.js",
   "private": true,
   "scripts": {
-    "postinstall": "npx pvbase64 -i ../../lib/common/cheetah_params.pv -o ./cheetah_params.js",
-    "start": "yarn run http-server -a localhost -p 5000"
+    "start": "node scripts/run_demo.js"
   },
   "keywords": [
     "Picovoice",
@@ -18,7 +17,7 @@
   "author": "Picovoice Inc",
   "license": "Apache-2.0",
   "dependencies": {
-    "@picovoice/cheetah-web": "~2.0.0",
+    "@picovoice/cheetah-web": "../../binding/web",
     "@picovoice/web-voice-processor": "~4.0.8"
   },
   "devDependencies": {