Exception : can not find input device with 8 channel(s)

[cogmeta]

Following exception while trying to run sudo python mic_array.py.

(0, 'bcm2835 ALSA: - (hw:0,0)', 0L, 2L) (1, 'bcm2835 ALSA: IEC958/HDMI (hw:0,1)', 0L, 2L) (2, 'seeed-4mic-voicecard: - (hw:1,0)', 2L, 0L) (3, 'sysdefault', 0L, 128L) (4, 'playback', 0L, 128L) (5, 'dmixed', 0L, 2L) (6, 'ac108', 4L, 0L) (7, 'dmix', 0L, 2L) (8, 'default', 4L, 128L) Traceback (most recent call last): File "mic_array.py", line 190, in test_8mic() File "mic_array.py", line 176, in test_8mic with MicArray(16000, 8, 16000 / 4) as mic: File "mic_array.py", line 42, in init raise Exception('can not find input device with {} channel(s)'.format(self.channels)) Exception: can not find input device with 8 channel(s)

[cogmeta]

arecord -l List of CAPTURE Hardware Devices card 1: seeed4micvoicec [seeed-4mic-voicecard], device 0: bcm2835-i2s-ac108-codec0 ac108-codec0-0 [] Subdevices: 1/1 Subdevice #0: subdevice #0

[cogmeta]

sudo ./dfu --download respeaker_mic_array_8ch_raw.bin VID = 0x2886, PID = 0x7, BCDDevice: 0x82 XMOS DFU application started - Interface 3 claimed Detaching device from application mode. Waiting for device to restart and enter DFU mode... VID = 0x2886, PID = 0x7, BCDDevice: 0x82 ... DFU firmware upgrade device opened ... Downloading image (respeaker_mic_array_8ch_raw.bin) to device ... Download complete ... Returning device to application mode

[cogmeta]

Do i need to remove card 1: seeed4micvoicec [seeed-4mic-voicecard]?

[cogmeta]

lsb_release -a No LSB modules are available. Distributor ID: Raspbian Description: Raspbian GNU/Linux 9.1 (stretch) Release: 9.1 Codename: stretch

Raspberry pi model 3B

[cogmeta]

had to reinstall seeed-4mic-voicecard. Now it works !

[cogmeta]

had to reinstall seeed-4mic-voicecard. Now it works fine.