Aliasing Metrics for a Nonlinearly Processed Sine Signal

This repository includes functions necessary to measure aliasing distortion present in a nonlinearly processed sine signal. For the signal quality evaluation signal-to-noise ratio (SNR) and noise-to-mask ratio (NMR) are considered. Included functions are:

1. metrics_sin.m — main function to evaluate SNR and NMR.
2. bandlimit_signal.m — function to construct a bandlimited version of a nonlinearly processed sine signal.
3. calc_nmr.m — function to calculate NMR based on the Perceptual Evaluation of Audio Quality (PEAQ) algorithm from ITU-R recommendation BS.1387-2.

All of the relevant references are provided within MATLAB scripts. Practical considerations for these metrics are outlined in Section 5.1 of my MSc thesis.