audio_analyzer

A Flutter plugin that extracts waveform amplitudes from an audio file.

Supported platforms

Android
iOS
macOS
Linux
Web

Installation

Add the dependency:

dependencies:
  audio_analyzer: ^0.1.2

For Android, add JitPack to your top-level build.gradle repositories:

allprojects {
  repositories {
    maven { url 'https://jitpack.io' }
  }
}

Usage

import 'package:audio_analyzer/audio_analyzer.dart';

final analyzer = AudioAnalyzer();
final amplitudes = await analyzer.getAmplitudes(
  '/path/to/audio.wav',
  samplesPerSecond: 40,
);

To clear cached native data when supported:

await analyzer.clearCache();

API

Future<List<int>> getAmplitudes(String filePath, {int samplesPerSecond = 40})
Future<void> clearCache()

Linux notes

Linux currently supports WAV (RIFF/WAVE) files.
Supported WAV encodings: PCM 8/16/24/32-bit and float 32-bit.

Amplitude format

Returned amplitudes are normalized integer RMS values from 0 to 100.

License

MIT. See LICENSE.