Audio Kit

A lightweight Audio recorder and player for Flutter, built with Zig, miniaudio,webrtc.

Features

Audio Recorder

The recorder supports:

• Start recording to a file
• Stop recording
• Pause recording
• Resume recording
• File-based recording output
• Real-time noise filtering using WebRTC

Real-Time Noise Filtering

The recorder supports real-time noise suppression during recording using a native WebRTC-based noise filter.

Noise filtering is performed on the audio stream in real time before the recorded audio is written to the output file.

---

Start recording

final input = "/path/to/recording.wav";

AudioRecorder.start(input);

Stop recording

AudioRecorder.stop();

Pause / Resume recording

if (AudioRecorder.isPaused) {
  AudioRecorder.resume();
  print("Recording resumed!");
} else {
  AudioRecorder.pause();
  print("Recording paused!");
}

A typical recording flow is:

AudioRecorder.start(input);

// Pause when required
AudioRecorder.pause();

// Resume when required
AudioRecorder.resume();

// Finish recording
AudioRecorder.stop();

---

Audio Player

The player supports:

• Play an audio file
• Pause playback
• Resume playback
• Restart playback from the beginning
• Stop playback

Play

void _play() {
  bool success = AudioPlayer.play(widget.audioFilePath);

  print(widget.audioFilePath);

  if (success) {
    setState(() {
      _isPlaying = true;
      _isPaused = false;
    });
  }

  print("Playback started: $success");
}

Pause

void _pause() {
  AudioPlayer.pause();

  setState(() {
    _isPlaying = false;
    _isPaused = true;
  });

  print("Playback paused");
}

Resume

void _resume() {
  AudioPlayer.resume();

  setState(() {
    _isPlaying = true;
    _isPaused = false;
  });

  print("Playback resumed");
}

Restart

void _restart() {
  AudioPlayer.restart();

  setState(() {
    _isPlaying = true;
    _isPaused = false;
  });

  print("Playback restarted");
}

Stop

void _stop() {
  AudioPlayer.stop();

  setState(() {
    _isPlaying = false;
    _isPaused = false;
  });

  print("Playback stopped");
}

Platform Support

The package currently supports:

Platform	Status
Android	✅ Supported
Windows	✅ Supported
Linux	✅ Supported
iOS	🚧 Planned

Android CPU / ABI Support

Native libraries are provided for the following Android ABIs:

jnilibs/
├── arm64-v8a/
├── armeabi-v7a/
└── x86_64/

Supported Android architectures

ABI	CPU
arm64-v8a	64-bit ARM
armeabi-v7a	32-bit ARM
x86_64	64-bit x86

arm64-v8a is recommended for modern Android phones and tablets.

---

Architecture

The package uses the following stack:

                  Flutter / Dart
                        │
                     Dart FFI
                        │
          ┌─────────────┴─────────────┐
          │                           │
     Native Audio                WebRTC Noise
        Engine                    Suppression
          │                           │
          └─────────────┬─────────────┘
                        │
                       Zig
                        │
                    miniaudio
                        │
          ┌─────────────┼─────────────┐
          │             │             │
       Android       Windows        Linux
     Audio System   Audio System   Audio System

Future Development

iOS Support

iOS support is planned as a future development milestone.

If you find any issues, kindly let me know.