Tested with a jack 3.5 to USB adapter + headset with microphone and jack 3.5 connection: it works much better. Some background noise can be listened, but nothing very important.

I suppose, with the right headset, sound would be event much better.

Tested with a jack 3.5 to USB adapter + headset with microphone and jack 3.5 connection: it works much better. Some background noise can be listened, but nothing very important.

I suppose, with the right headset, sound would be event much better.

@crispyoz More information: when audio is recorded in PC and played in Omega, it works fine. When audio is recorded using Omega and played in PC: background noise appear.

@crispyoz I powered the Omega 2 Pro with a power supply (not PC), but still the same problem. If I can, I will get a usb sound card, to check if the problem disappear.

@crispyoz I'm powering the Omega with a USB cable connected to my Linux PC.

@crispyoz I would like to add more information. I'm using a mono headset with microphone.

The headset has USB connector, that I directly connect to the USB of the Omega 2 Pro.

I could see in the forum, that some users have used a USB sound card. The USB sound card, probably had a jack 3.5 for audio input and output.

Maybe using a USB sound card the background noise could disappear. What do you think?

@crispyoz Yes, it has it.

@crispyoz If I do the same in my Linux computer everything works fine. When I do the mentioned steps in Omega, it appears this strange background noise.

Thank you

Hi all

I made the following test using two different Omega2 Pro:

• Installed the Alsa packages
• Connect a usb headset with microphone
• Record my voice using different frequencies. I used from 8kHz to 44Khz (arecord command)
• Play the wav generated files of the previous step (aplay command)

In both omegas I obtained the same result: a strange background noise. The noise is regular.

The same headset has been tested in another linux machine without any problem. It's quite a good headset.

Any suggestion?

Thank you

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