works nice on win10, but unusable on ubuntu (too noizzy)

[elpimous]

Hello,
The recording on windows 10 is perfect.
But, on ubuntu, I can't use it (and I bought it for ubuntu usage !!)
my voice is lost in the noizzy sounds.

tested on a desktop and a laptop.

on the laptop, win10 ok.

on the same laptop, just after ubuntu 16.04 fresh install,
I run the rules, to avoid sudo,
installed pyaudio and respeaker --update,

connect the respeaker mic array to usb port, and try a sox mono 16000 : very very poor record !!
one example : http://dl.free.fr/dsRBiRGZC

Strange : sometimes, record is clear (unstable !!)

I tested 2 differents usb cables,
tested with 2 last firmwares raw and xvsm,
board fixed on a plastic mount, never touched by fingers.

Physical mics must work, as it works nicely on win10.

Is it a ubuntu driver or anything ?

Please help, I can't do anything for now

Best regards, Vincent

[elpimous]

on the ubuntu sound parameters, I can see :
internal microphone
numeric entry S/PDIF (respeaker)
microphone (respeaker)

I tested with each of respeaker inputs, both, but bad records !!

[xiongyihui]

Instead of using sox, it'd better use arecord. For example,

arecord -v -D hw:1 -f S16_LE -r 16000 -c 1 s.wav

[elpimous]

Thanks YihuiXiong I did a lot of work, trying to find the problem, but nothing ... well, tested : couldn't use your command with format : nvidia@nvidia-Lenovo:~$ arecord -v -D hw:1 -f S16_LE -r 16000 -c 1 s.wav Capture WAVE 's.wav' : Signed 16 bit Little Endian, Fréquence 16000 Hz, Mono arecord: set_params:1233: Ce format d'échantillonage n'est pas disponible (format impossible) Available formats: - S24_3LE tested : arecord -v -D hw:1 -f S24_3LE -r 16000 -c 2 s.wav result : http://dl.free.fr/gaKUQUhol Too noizzy.. changed to firmware RAW 0x83, result : http://dl.free.fr/wTqlKQvem the first 2 channels produce a very noizzy sounds, the 6 next are flat changed firmware to XVSM 0x32 arecord -v -D hw:1 -f S24_3LE -r 16000 -c 2 s.wav ( can't S16-LE, neither -c 1) result : http://dl.free.fr/fZx3GnBX2 An idea ?? PS : respeaker installed on a fresh ubuntu 16.04 stock, ring array works nice, red led lighs on when speaking, - ok small green led lights on at power - ok as you can see, tested all firmwares (both old too !!) but i didn't uninstall driver when changing from 0x32 to 0x83 I use your mic array, for deep learning STT, and I need clear voice. My work is for ubuntu, but tested mic on windows10, and the sound is perfect, impressive ! So it let me think that material is ok. Driver problem ? impatient to read you. Thanks YihuiXiong

[persefone7]

I'm having the same issues with 16.04 - sound recording is unusable because of the hissing sounds.

Did anyone find a solution yet? Thanks in advance for any help - would hate to have to switch back to windows over something so basic!