Hmmm, maybe, not sure why the old headset doesn't hum, but I found some
reviews including a dragon forum that says that the DSP-400 is supposedly
sensitive enough to it that just being plugged into anything running on AC
power will be guaranteed to do it. My old one didn't but hmmmm, maybe a
different kind of headset.
----- Original Message -----
From: "DJ DOCTOR P" <djdoct...@att.net>
To: "PC Audio Discussion List" <pc-audio@pc-audio.org>
Sent: Monday, April 19, 2010 8:03 PM
Subject: Re: hum on USB headset mic?
High Brent,
The problem may be the way your computer is grounded.
If there was some way to get read of the ground loop, you will get read of
the humming noise in the process.
My best regards.
John.
----- Original Message -----
From: "Brent Harding" <bhard...@doorpi.net>
To: "PC Audio Discussion List" <pc-audio@pc-audio.org>
Sent: Monday, April 19, 2010 6:46 PM
Subject: hum on USB headset mic?
Hi there. I've been using a Plantronics DSP-400 USB headset mic for quite
a long time now. I got another one for Christmas a few years ago that I
decided to try yesterday because the foam on the left earpiece is just
about all gone. That one never had any audio problems for me recording,
but this one I just opened has hum when I record. I think it's just a
little bit, but when you do net radio and stuff that applies processing,
that sound will become more apparent. I plugged the old one back in to
get rid of the hum even though it's getting uncomfortable to wear. How
can I get rid of the hum so I can use this new one, or did I just end up
with a defective one? I know I can't return it any more because that
model isn't made any more and it's a few years old. Why would a new one
of the same model record hum and this old one I've been using for about 4
years now doesn't? I thought hum would be an unusual thing with USB
headsets. Is there any way around it. I'd hate to buy a bunch of USB
headsets and have to return them to find one that doesn't hum as it's
important to me to have a somewhat clean recording. I use Skype for some
of those phone systems where you have to say what you want and noise like
that may screw up the voice recognition. I can't take the cables off as
they're built in, so is there anything that can be done, or did I end up
with a defective one?
Thanks.
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