alsa-project/alsa-lib issue #153 was edited from Cean1024: alsa info: alsa-config-1.0 alsa-lib-1.1.5 alsa-plugins-1.1.5 alsa-utils-1.1.5 asound.conf: pcm.dmixer { type dmix ipc_key 1024 slave { pcm "hw:0,0" period_time 0 period_size 1024 buffer_size 4096 rate 48000 format "S32_LE" channels 2 } bindings { 0 0 1 1 } } test cmd: arecord -f dat | aplay -f dat -D plug:dmixer Issue URL : https://github.com/alsa-project/alsa-lib/issues/153 Repository URL: https://github.com/alsa-project/alsa-lib