Design and implementation of a DSP based MPEG-1 audio encoder

Abstract

Unit of frequency measure based on critical bandwidth Coder/decoderprovides 16 bit samples of analog signal Discrete Cosine Transform Difference between two frequencies in barks. Finite Impulse Responsefilter based on the weighted sum of input values. Fast Fourier Transformtime to frequency transform Subbands that are less than the bound are coded in stereo, while 1 the sum of the two channels is coded for the higher subbands. Interrupt Service Routinecode executed to service an interrupt Kilo bits per second Least Significant Bytelower 8 bits of a 16 bit value The science of how the ear and brain perceive sounds. The effect of one tone or noise to make a test tone inaudible or less loud. The SPL of the surrounding frequencies that is masked out by the masking frequency Million Instructions Per Second Mask to Noise Ratio Moving Pictures Experts Group Most Significant Byteupper 8 bits of a 16 bit value Encoding of stereo signals as their sum and difference Noise like frequency components Personal Computer Pulse Code Modulation Continuous represented as discrete values.