Angular2: Web Speech Api - Voice Recognition

After reading the documentation of webkitSpeechRecognition (voice recognition in Javascript) I tried to implement it in Angular 2. But when I did this: const recognition = new webk

Solution 1:

Finally I solved creating an interface!!

exportinterface IWindow extendsWindow {
  webkitSpeechRecognition: any;
}

And:

const {webkitSpeechRecognition} : IWindow = <IWindow>window;
const recognition = newwebkitSpeechRecognition();

Solution 2:

In Angular 9, it worked me but using const speechRecognition = window['webkitSpeechRecognition']; note that the window 'w' is lowercase.

Solution 3:

home.component.html

<select (change)="onChangeEvent($event)"><option>Chartdata</option><option>Tabledata</option></select><divid="chart" (click)="voice()">ChartData</div><divid="table">TableData</div><inputtype="text"placeholder="Speak out"/><p>RxCompoent.message: {{message}}</p><p><inputtype="text"value="{{message}}"></p><button
    [disabled]="service.started$ | async"
    (click)="listen()"
  >listen</button><p>lang: ja</p><p>grammars: none</p>

home.component.ts

import { Component, OnInit } from'@angular/core';
import { FormBuilder, FormGroup, Validators } from'@angular/forms';
importSpeechfrom'speak-tts';
 import { RxSpeechRecognitionService, resultList, } from'@kamiazya/ngx-speech-recognition';
@Component({
  selector: 'app-home',
  templateUrl: './home.component.html',
  styleUrls: ['./home.component.css'],

  providers: [ RxSpeechRecognitionService ]
})
exportclassHomeComponentimplementsOnInit { 
    data:any;
    nestedjson:any;
    message = '';
 constructor(private formBuilder: FormBuilder,public service: RxSpeechRecognitionService) {


     }

  ngOnInit() {
    //  this.voicex();

} 
listen() {
    this.service
      .listen()
      .pipe(resultList)
      .subscribe((list: SpeechRecognitionResultList) => {
        this.message = list.item(0).item(0).transcript;
        console.log('RxComponent:onresult', this.message, list);
      });
  }

voice(){
this.voicex();
}
voicex(){
const ut = newSpeechSynthesisUtterance('Speak out');
speechSynthesis.speak(ut);  
}
onChangeEvent(ev) {
    console.log(ev.target.value); // should print option1
}   


}

app.module

import { BrowserModule } from'@angular/platform-browser';
import { NgModule } from'@angular/core';

import { AppRoutingModule } from'./app-routing.module';
import { AppComponent } from'./app.component';
import { UsermanagementComponent } from'./usermanagement/usermanagement.component';
import { HomeComponent } from'./home/home.component';
import { HeaderComponent } from'./shared/header/header.component';
import { LoginComponent } from'./login/login.component';
import {HttpModule} from'@angular/http';
import { FormsModule, ReactiveFormsModule } from'@angular/forms';
import { ChartModule,HIGHCHARTS_MODULES } from'angular-highcharts';
import * as exporting from'highcharts/modules/exporting.src';
import * as exportdata from'highcharts/modules/export-data.src';
import {SpeechRecognitionModule} from'@kamiazya/ngx-speech-recognition';

@NgModule({
  declarations: [
    AppComponent,
    UsermanagementComponent,
    HomeComponent,
    HeaderComponent,
    LoginComponent
  ],
  imports: [
    BrowserModule,
    AppRoutingModule,
    FormsModule,
    ReactiveFormsModule,
    HttpModule,
    ChartModule,
    SpeechRecognitionModule.withConfig({ lang: 'en-US', interimResults: true, maxAlternatives: 10, })
  ],
  providers: [{provide:HIGHCHARTS_MODULES,useFactory:() =>[exporting,exportdata]}],
  bootstrap: [AppComponent]
})
export classAppModule { }

package.json

{
  "name": "sampleproject",
  "version": "0.0.0",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "~8.2.8",
    "@angular/common": "~8.2.8",
    "@angular/compiler": "~8.2.8",
    "@angular/core": "~8.2.8",
    "@angular/forms": "~8.2.8",
    "@angular/http": "^7.2.15",
    "@angular/platform-browser": "~8.2.8",
    "@angular/platform-browser-dynamic": "~8.2.8",
    "@angular/router": "~8.2.8",
    "@kamiazya/ngx-speech-recognition": "^0.4.3",
    "angular-highcharts": "^8.0.3",
    "highcharts": "^7.2.0",
    "jquery": "^3.4.1",
    "rxjs": "~6.4.0",
    "rxjs-compat": "^6.5.3",
    "speak-tts": "^2.0.8",
    "tslib": "^1.10.0",
    "zone.js": "~0.9.1"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "~0.803.6",
    "@angular/cli": "~8.3.6",
    "@angular/compiler-cli": "~8.2.8",
    "@angular/language-service": "~8.2.8",
    "@types/node": "~8.9.4",
    "@types/jasmine": "~3.3.8",
    "@types/jasminewd2": "~2.0.3",
    "codelyzer": "^5.0.0",
    "jasmine-core": "~3.4.0",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "~4.1.0",
    "karma-chrome-launcher": "~2.2.0",
    "karma-coverage-istanbul-reporter": "~2.0.1",
    "karma-jasmine": "~2.0.1",
    "karma-jasmine-html-reporter": "^1.4.0",
    "protractor": "~5.4.0",
    "ts-node": "~7.0.0",
    "tslint": "~5.15.0",
    "typescript": "~3.5.3"
  }
}

Solution 4:

You can solve the problem by

const speechRecognition = Window['webkitSpeechRecognition'];

Or if You are using jQuery

const sr = $(window).get(0).webkitSpeechRecognition;