tab1:# hda-verb /dev/snd/hwC0D0 0x20 SET_COEF_INDEX 0x07 nid = 0x20, verb = 0x500, param = 0x7 value = 0x0 tab1:# hda-verb /dev/snd/hwC0D0 0x20 SET_PROC_COEF 0x7cb0 nid = 0x20, verb = 0x400, param = 0x7cb0 value = 0x0