Monthly Archives: June 2015

Teaching Electronics

Today I was working down at Sutton High School, teaching basic electronics to high school pupils. They learnt how to wire up an Arduinitar, a arduino based electric synthesis guitar with analog and digital control. This is part of Queen Marys outreach program.

More information on the Arduinitar is avaliable here http://www.eecs.qmul.ac.uk/~andrewm/arduinitar.html

Publication

It was announced today that my paper “Web Audio Evaluation Tool: A Browser-Based Listening Test Environment” has been accepted for the Sound and Music Computing Conference taking place in August.

This paper is a web audio API based development that provides users with a simple interface to construct and run perceptual audio evaluation experiments. Due to being browser based, there is no requirement for proprietary software, and it is easily extendable to any individual that can access a computer. It is set up so that no internet connection is required to run locally, or it can be hosted and post the XML output to a server.

This framework will give me an infrastructure with which to base all of me perceptual evaluation experiments which I will be undertaking in the next month or so.

Audio Feature Extraction

Over the past few weeks, I have been working on evaluating a range of audio feature extraction tools. When I first started this project, I thought everyone uses the same features, so this should be easy – I was wrong.

I evaluated ten different feature extraction tools

  • Aubio
  • Essentia
  • jAudio
  • Librosa
  • LibXtract
  • Marsayas
  • Meyda
  • MIR Toolbox
  • Timbre Toolbox
  • YAAFE
I discovered that from this set of toolboxes, there are only three features in common to all toolboxes –
spectral centroid spectral rolloff and signal energy.
In fact, of over 250 unique features, just 30 are present in more than half of the feature extraction tools.