Integrating Speech-to-Text functionality into a React Native chat application: A step-by-step guide

For our project, my friends and I are developing a chat application that will incorporate Google's Speech-To-Text, Text-to-Speech, and Translation APIs. We have successfully integrated Gifted Chat and Firebase into the app, with Text-to-Speech already functioning well. Our goal is to enable users to use their microphone for speech input, which will be converted to text and displayed in the chat box automatically. However, we are facing challenges in adding Speech-To-Text functionality to the app. We suspect that manual integration of STT into Gifted Chat modules is necessary, but we lack the expertise to do so. Despite searching online, we couldn't find any helpful resources on this matter. Any assistance would be greatly appreciated. Thank you!

Answer №1

Utilize the react-native-voice library for implementing speech recognition feature

The Gifted Chat component provides a text prop and onInputTextChanged prop to assist in managing the speech recognition results displayed in the text box.

import Voice from '@react-native-community/voice';
import React, { useState, useEffect } from 'react';
import { GiftedChat, Composer } from 'react-native-gifted-chat';

const SpeechRecognition = () => {
  const [speechText, setSpeechText] = useState('');

  useEffect(() => {
    Voice.onSpeechStart = handleSpeechStart;
    Voice.onSpeechEnd = handleSpeechEnd;
    Voice.onSpeechError = handleSpeechError;
    Voice.onSpeechResults = handleSpeechResults;
    Voice.onSpeechPartialResults = handleSpeechPartialResults;
  
  return () => Voice.destroy().then(Voice.removeAllListeners)
}, [])

  const handleSpeechStart = () => {
  ...
  }

  const handleSpeechEnd = () => {
  ...
  }

  const handleSpeechError = () => {
  ...
  }

  const handleSpeechResults = (e) => {
  ...
  setSpeechText(e.value[0])
  }

  const handleSpeechPartialResults = (e) => {
  ...
  setSpeechText(e.value[0])
  }

  const startListening = () => {
  ...
  // Set the locale to specify the language for recognition, e.g., I am using Nigerian English.
  Voice.start('en-NG')
  }

  const renderComposer = (props) => {
  // Add a microphone button within the text input field
  return (
    <View style={{ flexDirection: 'row' }}>
     <Composer {...props} />
     <MicrophoneButton onPress={startListening} />
    </View>
   )
  }

  return (
    ...
    <GiftedChat 
      renderComposer={renderComposer}
      text={speechText}
      onInputTextChanged={setSpeechText} 
     />
    ...
  )
 ...

Answer №2

If you're looking to implement speech recognition in your React Native app, consider using the react-native-voice library.

Check out this sample usage:

import Voice from '@react-native-community/voice';
import React, {Component} from 'react';

class VoiceRecognition extends Component {
  constructor(props) {
    Voice.onSpeechStart = this.onSpeechStartHandler.bind(this);
    Voice.onSpeechEnd = this.onSpeechEndHandler.bind(this);
    Voice.onSpeechResults = this.onSpeechResultsHandler.bind(this);
  }
  onStartButtonPress(e){
    Voice.start('en-US');
  }
  ...
}

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