Speech signal 800Hz 19-point FIR low-pass filter C language floating-point program

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Speech signal 800Hz 19-point FIR low-pass filter C language floating-point program [Copy link]

#include   const int length=180/*The voice frame length is 180 points = 22.5ms@8kHz sampling*/ void filter(int xin[], int xout[], int n, float h[]);/*Filter subroutine description*/ /*19-point filter coefficients*/ static float h[19]= {0.01218354, -0.009012882, -0.02881839, -0.04743239, -0.04584568, -0.008692503, 0.06446265, 0.1544655, 0.2289794, 0.257883, 0.2289794，0.1544655，0.06446265，-0.008692503，-0.04584568， -0.04743239, -0.02881839, -0.009012882, O.01218354}; static int xl[length+20]; /*Low-pass filter floating point subroutine*/ void filter(int xin[], int xout[], int n, float h[]) { int i, j; float sum; for(i=0; i

Speech signal 800Hz 19-point FIR low-pass filter C language floating-point program