ec_hw incompatible with 4 mic linear array

[blademckain]

hi i have installed ec i use this asound.conf

` defaults.pcm.rate_converter "samplerate"

pcm.!default { type asym playback.pcm "dmixer"

capture.pcm "ac108"

capture.pcm "eco"

}

pcm.ac108 { type plug slave { rate 48000 format S32_LE pcm "hw:seeed8micvoicec" } }

pcm.dmixer { type plug slave { pcm { type dmix ipc_key 555555 slave { pcm "hw:seeed8micvoicec" format S32_LE channels 8 } bindings { 0 0 1 1 2 2 3 3 4 4 5 5 6 6 7 7 } } channels 8 format S32_LE rate 48000 } ttable.0.0 1 ttable.1.1 1 ttable.0.2 1 ttable.1.3 1 ttable.0.4 1 ttable.1.5 1 ttable.0.6 1 ttable.1.7 1 }

pcm.ac101 { type plug slave { pcm "hw:seeed8micvoicec" channels 8 format S32_LE rate 48000 } ttable.0.0 1 ttable.1.1 1 ttable.0.2 1 ttable.1.3 1 ttable.0.4 1 ttable.1.5 1 ttable.0.6 1 ttable.1.7 1 }

pcm.eco { type plug slave.pcm { type fifo infile "/tmp/ec.output" rate 16000 format S16_LE channels 2 } } `

if i run ec_hw: /root/ec/ec_hw -i plughw:seeed8micvoicec -c 8 -l 7 -m 0,1,2,3 and next, try to run audio i get this error: root@raspberrypi:~# aplay -r 16000 a.wav Playing WAVE 'a.wav' : Signed 32 bit Little Endian, Rate 16000 Hz, Channels 8 ALSA lib pcm_params.c:2226:(snd1_pcm_hw_refine_slave) Slave PCM not usable aplay: set_params:1310: Broken configuration for this PCM: no configurations available

if i try to run audio without run ec_hw, i ear sound correctly

your asound.conf seems to be made for ec and not for ec_hw if your guide is correct ec_hw don't create /tmp/ec.input!!!!!!