do_shelving_filter(effect_buffer, count, reverb_status.high_coef, reverb_status.high_val); 
do_filter_iir1_lowpass_stereo(effect_buffer, count, &(reverb_status.lpf)); 
void do_ch_reverb(int32 *buf, int32 count){	if ((opt_reverb_control == 3 || opt_reverb_control == 4			|| opt_reverb_control < 0 && ! (opt_reverb_control & 0x100)			|| opt_effect_quality >= 1) && reverb_status.pre_lpf)		do_shelving_filter(effect_buffer, count, reverb_status.high_coef,		reverb_status.high_val);	if (opt_reverb_control == 3 || opt_reverb_control == 4			|| opt_reverb_control < 0 && ! (opt_reverb_control & 0x100)			|| opt_effect_quality >= 2)		do_freeverb(buf, count);	else		do_standard_reverb(buf, count);}
4357	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4357/ef525d28ea437fec3f4f86bd57a71d3712f68920/reverb.c/buggy/timidity/reverb.c