The following research software is being made freely available for research purposes. Some of this software may contain patented technology and we cannot certify its legal use for commercial activities.
Transform Weighted Interleaved Vector Quantization (TWIN-VQ): Matlab Implementation
This Matlab implementation has been validated against the C-based TWIN-VQ implementation that is part of the MPEG-4 audio reference software.
Low Bitrate Scalable Audio Coder: Matlab Implementation
This audio coding algorithm is fully described and evaluated in our paper from July 2008 published in IEEE Transactions on Speech, Audio, and Language Processing.
Objective Audio Quality Metrics
This Matlab-based code implements the perceptual audio quality metrics described in our paper from January 2008 published in IEEE Transactions on Speech, Audio, and Language Processing.
Time-Varying Objective Audio Quality Metric
This Matlab-based code implements the time-varying perceptual audio quality metric described in our 2011 IEEE Transactions on Speech, Audio, and Language Processing paper. Its output is a plot of how the audio quality varies with time.
Graph test perceptual testing code
This Matlab-based code implements the graph test perceptual testing methodology described in our 2011 IEEE Transactions on Speech, Audio, and Language Processing paper.