Evaluating performance of denoising algorithms using metrics : MSE,MAE,SNR,PSNR & cross correlation

This code computes the metrics MSE, MAE, SNR, PSNR and cross correlation coefficient .

This function is useful in evaluating the performance of denoising algorithms, such as ECG, EEG, audio (speech) etc. I have attached a demo script, which you can use to run to understand its use.
Please contact me if you have doubt in using this code