What is expo-audio

Successor to expo-av library.

# install expo audio
npx expo install expo-audio

npx expo uninstall expo-audio

Minimal setup in React:

import { useAudioRecorder, AudioModule, RecordingPresets } from "expo-audio";

const audioRecorder = useAudioRecorder(RecordingPresets.HIGH_QUALITY);

const record = async () => {
  await audioRecorder.prepareToRecordAsync();
  audioRecorder.record();

  console.log("Recording started");

  setIsListening(true);
};

const stopRecording = async () => {
  setIsListening(false);

  console.log("Recording stopped");

  await audioRecorder.stop();

  const audioFileUri = audioRecorder.uri;

  setAudioBlobUri(audioFileUri || "");

  return audioFileUri;
};

useEffect(() => {
  (async () => {
    const status = await AudioModule.requestRecordingPermissionsAsync();

    if (!status.granted) {
      Alert.alert("Permission to access microphone was denied");
    }
  })();
}, []);

Caveat

expo-audio requested device not found means the hardware does not have a physical microphone.