Effects of Different Environmental noises and Sampling Frequencies on the performance of MFCC and PLP based Bangla Isolated Word Recognition System

The paper has observed that different environmental noises and sampling frequencies severely affect the performance of the MFCC and PLP based Bangla Isolated Word Recognition System. We have observed the effects of different environments on MFCC and PLP for 39 and 52 coefficients for 8 kHz, 16 kHz, 32 kHz, and 44.1 kHz sampling frequencies. From the experimental results, we have observed that for different sampling frequency both in noiseless and noisy medium PLP models detect better than MFCC except in CLASSROOM environment where different types of noise are present simultaneously.