For vowels voiced sound) use LPc to represent the signal The concept is to find a set of parameters ie. a, a,, a, a,.ao=&to represent the same waveform typical values of p=8->13) For example Input waveform Can reconstruct the waveform from these lpc codes Time frame y 30ms a1, a2, a3, a4,,a8 Time frame y+1 boms a1,a2a3,a4…a8 Time frame y+2 a"1,a"2a"3,a"4…a'8 Each time frame y=512 samples Each set has 8 floating point 03123nN-1=511 numbers (data compressed) 512 integer numbers(16-bit each) Feature extraction v 9aFor vowels (voiced sound), use LPC to represent the signal • The concept is to find a set of parameters ie. 1 , 2 , 3 , 4 ,.. p=8 to represent the same waveform (typical values of p=8->13) Feature extraction, v.9a 25 1, 2, 3, 4,.. 8 Each time frame y=512 samples (S0,S1,S2,. Sn,SN-1=511) 512 integer numbers (16-bit each) Each set has 8 floating point numbers (data compressed) ’1, ’2, ’3, ’4,.. ’8 ’’1, ’’2, ’’3, ’’4,.. ’’8 : Can reconstruct the waveform from these LPC codes Time frame y Time frame y+1 Time frame y+2 Input waveform 30ms 30ms 30ms For example