st->mem_preemph_fx=shl_sat(st->mem_preemph_fx,sub(-1,st->q_inp));/*Q(-1) saturation added as float value goes above 65536 for +10 dB test (ltv48_MC512.wav and ltv48_MC51.wav) */
st->mem_preemph_fx=shl_sat(st->mem_preemph_fx_q_inp,sub(-1,st->q_inp));/*Q(-1) saturation added as float value goes above 65536 for +10 dB test (ltv48_MC512.wav and ltv48_MC51.wav) */