do_lowpass_24db(chorus_effect_buffer, count, chorus_param.high_coef, chorus_param.high_val);
do_shelving_filter(chorus_effect_buffer, count, chorus_param.high_coef, chorus_param.high_val);
void do_ch_chorus(int32* buf, int32 count){	if((opt_reverb_control == 3 || opt_effect_quality >= 1) && chorus_param.chorus_pre_lpf) {		do_lowpass_24db(chorus_effect_buffer, count, chorus_param.high_coef, chorus_param.high_val);	}	do_stereo_chorus(buf, count);}