How to voice to text?

[uldcra]

Hello everybody.
My english is awful.
I try to get the text capture when i am startinglistenig, but i d´ont know how to make it.

`this.speechRecognition.isRecognitionAvailable()
.then((available: boolean) => console.log(available))

// Start the recognition process
this.speechRecognition.startListening(options)
  .subscribe(
    (matches: string[]) => {
      console.log(matches);
      this.cd.detectChanges();
      for (let index = 0; index < matches.length; index++) {
        this.texto.push( matches[index] );
      }
      alert('Empezar a escuchar');
      this.cd.detectChanges();
    },
    (onerror) => {
      console.log('error:', onerror);
      alert('error' + JSON.stringify(onerror));
    }
  )`