c language algorithms for digital signal processin

[n]) + (b1 x[n-1]) + ... - (a1 y[n-1]) - ...` ```c void iir_filter(const float input, float output, const float b_coeffs, const float a_coeffs, int length) { float y_prev[1] = {0}; for (int n = 0; n < length; n++) { float y = b_c