Synth-DIY Yahoo! Groups Archives

USB/MIDI Buzzing Noise

2007-09-15 by Daniel

Hey there.

I have been experimenting with my DTXpress and MIDI, but whenever I
plug the MIDI cable to my laptop I get this nasty buzzing noise. I
tired putting an RF choke on it, but to no avail. I also tried
different USB ports on my laptop and nothing! the noise is there
buzzing away over my PA. 

Any one else had to deal with this before? Any tips on fixing it? 

I also have a friend that connects his keyboards to his laptop using a
USB cable to trigger MIDI stuff and he also gets the buzzing noise on
his setup. Is it a ground issue?

Thanks!

Re: [DTXpress] USB/MIDI Buzzing Noise

2007-09-15 by S-E-A

It's a ground loop from your laptop.. and a common problem.

Nothing to do with the DTX.

See if you can get hold of a ground loop isolator. http://www.behringer.com/HD400/index.cfm?lang=eng

Basically it's an isolation transformer, but designed for audio frequencies.

You might find a simular unit at your local car audio supplier, and DJ's use laptops more and more, so DJ supply shops would be another port of call.

Hope this helps..

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----- Original Message -----

From: Daniel

To: DTXpress@yahoogroups.com

Sent: Saturday, September 15, 2007 2:18 AM

Subject: [DTXpress] USB/MIDI Buzzing Noise

Hey there.

I have been experimenting with my DTXpress and MIDI, but whenever I
plug the MIDI cable to my laptop I get this nasty buzzing noise. I
tired putting an RF choke on it, but to no avail. I also tried
different USB ports on my laptop and nothing! the noise is there
buzzing away over my PA.

Any one else had to deal with this before? Any tips on fixing it?

I also have a friend that connects his keyboards to his laptop using a
USB cable to trigger MIDI stuff and he also gets the buzzing noise on
his setup. Is it a ground issue?

Thanks!

Yamaha DTXpress/DTXplorer/DTXtreme

USB/MIDI Buzzing Noise

USB/MIDI Buzzing Noise

Re: [DTXpress] USB/MIDI Buzzing Noise

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