I've use matlab get the EQ coeffis a,b , and its work correctly, but when I fill in DSP biquad function, the state value always were -1.#INF.
I was using vector biquad. please help me! The dsp chip is sharc dsp 21488.
dsp code:
static float pm coeffs[MAX_BAND_NUM*5];
float dm state[31*2+1];
...
| coeffs[0] = 0.7673;//a2; | |
| coeffs[1] = -1.7522;//a1; | |
| coeffs[2] = 0.2295;//b2; | |
| coeffs[3] = -1.7522;//b1; | |
| coeffs[4] = 1.5379;//b0; |
....
biquad(pData_in,pData_out,&coeffs[5*i],state,256,1);
matlab figure:
