mfcc 1.1.0

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A library written in Dart to extract Mel-Frequency Cepstral Coefficients (MFCCs) from a signal.

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A library to extract Mel-Frequency Cepstral Coefficients (MFCCs) from a signal.

Usage #

A simple usage example:

import 'package:mfcc/mfcc.dart';

void main() {
  var sampleRate = 16000;
  var windowLength = 1024;
  var windowStride = 512;
  var fftSize = 512;
  var numFilter = 20;
  var numCoefs = 13;
  List<double> mySignal = // ...
  var features = MFCC.mfccFeats(mySignal, sampleRate, windowLength, windowStride, fftSize, numFilter, numCoefs);
  
}

Streaming usage exemple:

import 'package:mfcc/mfcc.dart';
import 'dart:async';

void main() {
  var sampleRate = 16000;
  var windowLength = 1024;
  var windowStride = 512;
  var fftSize = 512;
  var numFilter = 20;
  var numCoefs = 13;

  var mfcc_proc = MFCC(sampleRate, fftSize, numFilter, numCoefs, energy: false, preEmphasis: 0.97);
  
  StreamController<List<double>> audioInput = StreamController<List<double>>(); // Stream on which the audio frame are pushed

  StreamController<List<double>> featureStreamCtrl = mfcc_proc.setStream(audioInput.stream); // Feature stream controller. 

  StreamSubscription<List<double>> featureSub = featureStreamCtrl.stream.listen((features) { // Feature stream subscription.
    doSomething(features); 
  })

  List<double> myFrame = ... // frame of length [windowLength]

  audioInput.add(myFrame);

  // doSomething is called with extracted features. 

  mfcc_proc.cancelStream();
  featureSub.cancel();
}

Documentation #

Package documentation is available here. Generated using dartdoc.

Features and bugs #

Please file feature requests and bugs at the issue tracker.

LICENCE #

This project is under aGPLv3 licence, feel free to use and modify the code under those terms. See LICENCE.

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A library written in Dart to extract Mel-Frequency Cepstral Coefficients (MFCCs) from a signal.

Repository (GitHub)
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Documentation

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Uploader

baraglia.rudy@gmail.com

License

AGPL 3.0 (LICENSE)

Dependencies

fft

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