TREMFRQ
snd_emu10k1_ptr_write(hw, TREMFRQ, vp->ch, vp->reg.parm.tremfrq);
TREMFRQ, vp->reg.parm.tremfrq,
ATKHLDM, DCYSUSM, LFOVAL2, IP, IFATN, PEFE, FMMOD, TREMFRQ, FM2FRQ2,
TREMFRQ, 24, /* 1 Hz */