pcm.!default {
       type plug
       slave.pcm "dmixer"
   }
   
   pcm.dmixer {
       type dmix
       ipc_key 1024
       slave {
           pcm "hw:1,1"
           format S32_LE
           period_time 0
           period_size 1024
           buffer_size 4096
           rate 96000
       }
       bindings {
           0 0
           1 1
       }
   }
   
   ctl.dmixer {
       type hw
       card 1
   }