Re: Weird noise coming through USB using Audio Mixer on Satellite C870-1EX

Hello!
So, my sister has Satellite C870-1EX and she's using new Audio Mixer with intergrated sound card that sends sound through USB cable to the computer (computer recognizes it as external sound card/device). This is the device: http://alesis.com/multimix8usbfx .
Few weeks ago she started noticing a very weird noise, sort of high-pitched hissing noise, like very fast electronic beeping. Something similar to what good old internet modems did when they were connecting to the phone line, just not that loud and a bit faster.
Firstly, obviously, we tested every single setting on the Audio Mixer.
Then, we got new USB cable and swapped it.
After that we also took down the whole equipment, checked all cables, untangle them if needed, swapped power source, checked different recording software, even tried some other USB recording devices etc etc.
None of that helped. Drivers are all there as well.
Here's the catch. I used the same equipment with same settings on my computer and ... no hissing noise at all. The thing is, any setting we tried, that hissing noise stays the same, nothing changes.
Even if you pre-apply some sound FX that should either boost or reduce any kind of noise in the signal that is sent to the USB port of the computer, that hissing noise stays the same.
What worries me is that something is wrong with the hardware of my sister's laptop.
The noise does not appear if we use, for example, microphone that uses 3,5mm jack or laptop's built-in mic while recording stuff in the same recording session with same software and similar settings (considering some must be different due to different input).
However, the noise appears if we use any external USB recording device on any of her ports.
Windows on her laptop were reinstalled some time ago (now she's on Windows 7), but the problem appeared few weeks later.
As I said before, drivers are all there and up-to-date as well.
So, I'm hoping one of you will come up with a (simple) software sollution ... and hopefully we won't need to take her computer back to the shop.
However, as far as it seems now, the latest is more likely to happen.
Please, tell me I'm wrong :)
Thanks!

Hi
A friend of mine has had an similar issue using an DJ Controller : Traktor Kontrol S4
It was not a noise but he noticed some stutter and audio drop-outs.
The problem was the background processes which were running while using the controller.
In order to solve this it was needed to disable all possible devices in device manager like WLan, LAN, Bluetooth, etc
Additionally he had to disable the Antivirus software and firewall which was running in the background.
I dont know if it helps you but I think its worth a try
One further idea: try to reduce the CPU performance. This can be done in Win 7 power management.
How to handle the power managment features of Windows 7
http://aps2.toshiba-tro.de/kb0/HTD12017W0001R01.htm
The option Processor power management contain the option called Maximum processor state
Here you can set it to 90%-80%

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  • Weird noise coming through USB using Audio Mixer on Satellite C870-1EX

    Hello!
    So, my sister has Satellite C870-1EX and she's using new Audio Mixer with intergrated sound card that sends sound through USB cable to the computer (computer recognizes it as external sound card/device). This is the device: http://alesis.com/multimix8usbfx .
    Few weeks ago she started noticing a very weird noise (listen to the file attached bellow, I'm talking about that very annoying hissing noise). Firstly, obviously, we tested every single setting on the Audio Mixer. Then, we got new USB cable and swapped it. After that we also took down the whole equipment, checked all cables, untangle them if needed, swapped power source, checked different recording software etc etc. None of that helped. Here's the catch. I used the same equipment with same settings on my computer and ... no hissing noise at all. 
    Drivers are all there as well.
    What worries me is that something is wrong with the hardware of my sister's laptop. The noise does not appear if we use microphone that uses 3,5mm jack or laptop's built-in mic.
    Windows on her laptop were reinstalled some time ago (now she's on Windows 7), but the problem appeared few weeks later.
    So, I'm hoping one of you will come up with a (simple) software sollution ... and hopefully we won't need to take her computer back to the shop. However, as far as it seems now, the latest is more likely to happen. Please, tell me I'm wrong
    Thanks!
    Attachments:
    Track 1_002.zip ‏999 KB

    That doesn't appear to be a US model, and this is the forums for Toshiba USA. You may want to contact Toshiba in your region. If it's a European model, you could check the Toshiba Europe forums.
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