Question About the Result of vad_doa.py

[Anonymous]

Dear techsupport



I run the program "vad_doa.py" with the 6 Mic Circular Array Kit for
Raspberry

Pi (Pi3 Model B+). And the attached file is the log file with the result.
The VAD portion

of this seems to work but the value returned by mic.get_direction() has no
consistency,

and it seems to cause the program to hang quite often.



I also run the mic_array_dfu, and the result is in the file
"dfu_log". It shows

"Could not find/open device". Is there something wrong?



Can you provide your professional advice for me ? Thanks for your kindly
support.

[Seeed Tech Support]

Hi 

Damon,  

1. For VAD, the accuracy is 30 degree. you can test it by a record audio and play through cellphone at specific direction.

2. For 

mic_array_dfu, it is used for respeaker mic array v1.0, it can not used for the 6 Mic Circular Array Kit for Raspberry. 

Thanks

best rgds
Bill

[Anonymous]

Dear Techsupport



Thanks for your kindly support.

The file ‘vad_doa_log.txt’ is record without any speaking, and the VAD always print ’1’,

Is the function ‘vad.is_speech’ work normally?

[Seeed Tech Support]

Hi Damon,

For the DOA, please use this example to read the DOA.

http://wiki.seeedstudio.com/ReSpeaker_6-Mic_Circular_Array_kit_for_Raspberry_Pi/#librespeaker-aduio-process

For DOA without keyword example, I tested it and it will stuck after running a while. But VAD is 0 when there is no noise and 1 when there is noise. I remove from wiki and check with software team. 

---------------------------------------------------------------------
(0, 'bcm2835 ALSA: - (hw:0,0)', 0L, 2L)
(1, 'bcm2835 ALSA: IEC958/HDMI (hw:0,1)', 0L, 2L)
(2, 'seeed-8mic-voicecard: - (hw:1,0)', 8L, 8L)
Use seeed-8mic-voicecard: - (hw:1,0)
11111110011111111111
0
11111111111111111111
100
11111111111111111111
220
11111111111111111111
257
11111111111111111111
319
11111111111000000000
240
000000000000000000000000000000000011111111111111111111111111
280
111100000000000000000000000001111111000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000011111111111000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000011111111000000000000000000000000000000000000000000000000000000000000000000011111111111111
100
11111111111111111111
257
111111100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000011111111111111111111111111111
257
111111111000000000000000000000000000000000000000000000000000000000000000000000000000011111110000000000000111111111111111
199
11111111111111111111
240
11111111111111111111

  ---------------------------------------------------------------------
Thanks

best rgds
Bill