sbdsp_set_ifilter  184 dev/isa/sbdsp.c void	sbdsp_set_ifilter(void *, int);
sbdsp_set_ifilter 1631 dev/isa/sbdsp.c 				sbdsp_set_ifilter(addr, cp->un.ord ? SB_TREBLE : 0);
sbdsp_set_ifilter 1634 dev/isa/sbdsp.c 				sbdsp_set_ifilter(addr, cp->un.ord ? SB_BASS : 0);