This package transforms any integer stream into target frequency bands. Because this package just do a computation. So it should work on any platforms!
For ui https://github.com/iamSahdeep/FlutterVisualizers
For frequency bands https://github.com/keijiro/unity-audio-spectrum
You should look at example. It demostrates bar visualizer from microphone and music (pcm)
// Import package
import 'package:audio_visualizer/audio_visualizer.dart';
// Init visualizer
final visualizer = AudioVisualizer(
windowSize: bufferSize,
bandType: bandType,
sampleRate: sampleRate,
zeroHzScale: 0.05,
fallSpeed: 0.08,
sensibility: 8.0,
);
// Do transform
StreamController<List<double>> audioFFT = ...
final result = visualizer.transform(samples, minRange: 0, maxRange: 255)
audioFFT.add(result)
// Use Stream to build widget
StreamBuilder(
stream: audioFFT.stream,
builder: (context, snapshot) {
final buffer = snapshot.data as List<double>;
// render buffer somehow
React
Typescript
Django
Laravel
Facebook
Microsoft
Google
Alibaba
D3
Tencent