Motivation Fourier transform is a frequency method for finding the parameters of an audio signal, it is the formal method to implement filter However, there is an alternative, which is a time domain method and it works faster. It is called Linear Predicted Coding LPC coding method. The next slide shows the procedure for finding the filter outi he procedures are: e Pre-emphasis, (i) autocorrelation, ( ii) LPC calculation, iv) Cepstral coefficient calculation to find the representations the filter output Feature extraction v 9aMotivation • Fourier transform is a frequency method for finding the parameters of an audio signal, it is the formal method to implement filter. However, there is an alternative, which is a time domain method, and it works faster. It is called Linear Predicted Coding LPC coding method. The next slide shows the procedure for finding the filter output. • The procedures are: (i) Pre-emphasis, (ii) autocorrelation, (iii) LPC calculation, (iv) Cepstral coefficient calculation to find the representations the filter output. Feature extraction, v.9a 17