Analysis of audio signal using integer MDCT with Kaiser Bessel Derived window

The Integer Modififled Discrete Cosine Transform is widely used in Audio Coding Algorithms. In this paper, we discuss about the integer approximation of the lapped transform, called Integer MDCT, which is evolved from the MDCT by means of the rounding operations or lifting scheme. This method inherits most of the properties of MDCT and provides good spectral representation and perfect invertibility or reconstruction property. The purpose of this work is to analyse the audio signal and to overcome the TDAC problem. The audio signal is analysed by means of the window functions, since the audio signal does not remain stationary for more than 20ms. Because of the perfect reconstruction property, Kaiser Bessel Derived window function is used