react-native-record-audio-stream

Install

yarn add react-native-record-audio-stream
cd ios
pod install

Add Microphone Permissions

iOS

Add these lines to ios/[YOU_APP_NAME]/info.plist

<key>NSMicrophoneUsageDescription</key>
<string>We need your permission to use the microphone.</string>

Android

Add the following line to android/app/src/main/AndroidManifest.xml

<uses-permission android:name="android.permission.RECORD_AUDIO" />

Usage

import AudioStream from 'react-native-record-audio-stream';

const options = {
  sampleRate: 32000,  // default is 44100 but 32000 is adequate for accurate voice recognition
  channels: 1,        // 1 or 2, default 1
  bitsPerSample: 16,  // 8 or 16, default 16
  audioSource: 6,     // android only (see below)
  bufferSize: 4096    // default is 2048
};

AudioStream.init(options);
AudioStream.on('data', data => {
  // base64-encoded audio data chunks
});
  ...
AudioStream.start();
  ...
AudioStream.stop();
  ...

audioSource should be one of the constant values from here. Default value is 6 (VOICE_RECOGNITION).

Use 3rd-party modules like buffer to decode base64 data. Example:

// yarn add buffer
import { Buffer } from 'buffer';
  ...
AudioStream.on('data', data => {
  var chunk = Buffer.from(data, 'base64');
});

License

MIT