MTU.Community


Go Back   MTU.Community > DNoise Software > DNoise Help

DNoise Help General forum for discussing DNoise 3.0 software for Windows.

Reply
 
Thread Tools Display Modes
  #1  
Old May 11th, 2013, 10:21 AM
GwenButler GwenButler is offline
Registered User
 
Join Date: Jan 2008
Location: Waldorf, MD
Posts: 188
Unhappy Humming Annoyance

Hey Now!
I am determined to find an alternative to my Durabook which delayed my last gig by more than an hour due to a "grounding issue" (I believe) that was detected at the electrical source I was using, preventing my laptop from booting up.

While I know this is probably a feature that protects my LT from harm, after an hour of "jiggling" everything I could, (and stressing out), my laptop finally booted. (The club owner said she thought there was an issue w/the plug.)

I am now attempting to use a DELL LT I have as a back up. (Never, ever had the problem of getting any other LT to boot on start, wondering if the Durabook safety feature is "state of the art"--seems not.) If anyone has any suggested tips as far as that issue is concerned, THX! (It would certainly make my Durabook more reliable......)

My problem is that after plugging my sound system into the DELL headphone port, using the same input cable that I plug into my Durabook, that is, using:

Echo Indigo DJ 24/96 Laptop Sound Card, Dual Stereo Outputs

I hear a humming sound not present when using the Durabook.

Does anyone have any recommendations on how to get rid of this humming sound? I can't really hear the humming sound with music playing, but when there is dead silence, Yuck!

Is there a comparable Echo Indigo DJ device that I can interface my DELL to, using my headphone port?

Any and all help greatly appreciated.

Thanks in advance,
The Karaoke Queen

Last edited by GwenButler; May 11th, 2013 at 10:29 AM.
Reply With Quote
  #2  
Old May 11th, 2013, 02:14 PM
Roy Dennis's Avatar
Roy Dennis Roy Dennis is offline
Super Moderator
 
Join Date: Mar 2004
Location: Kent, England
Posts: 6,362
Re: Humming Annoyance

This is normally caused by the power adapter for charging your computer.
A test you can do to determine whether the mains adapter is the problem, if the noise or hum is not noticeable when running on battery power and not connected to power unit then it is the power adapter.

one solution would be to use some Ground Loop Isolators, you would need 1 between the computer audio out and whatever that's connecting to and if you have a second audio card another between that and your audio systems line input, Some examples are this one as it has 3.5 jack input: http://www.amazon.com/PAC-Ground-Iso...+loop+isolator
This is more common but you may then need adaptors to hook up:
http://www.amazon.com/Philmore-Groun...r+for+a+laptop

Another more exspensive solution is Ebtech Hum X Voltage Hum Filter,
This combats the problem at it's source:
http://www.amazon.com/Ebtech-Hum-Vol...r+for+a+laptop

I personally have not used the hum eliminator but have heard good reports about it.
__________________
Roy.
Test Laptop: Windows 10 Home Premium 64bit. Acer Aspire 5738G Intel core 2 Duo T6600 ATI Graphics 500Mb dedicated. 4Gb Memory 500 Gb SSD Drive. K-lite Mega version 1205
Show Backup: Windows 10 Acer Aspire Touch Screen V15, Intel core i5, Iris Graphics 6100 up to 8277mb dynamic video, 16Gb memory, 1 TB hybrid HDD. K-lite Mega pac.
Show Computer: Windows 10, Dell Inspiron 15 7000, CPU I7-855OU, Ram 8GB, Graphics UHD620 + Nvidea GeForce 940MX, Hard Drive SSD 256GB + 1GB internal.
Reply With Quote
  #3  
Old May 11th, 2013, 03:14 PM
GwenButler GwenButler is offline
Registered User
 
Join Date: Jan 2008
Location: Waldorf, MD
Posts: 188
Re: Humming Annoyance

Roy,
Thanks a ton! You're a gem.
Best Regards,
Gwen (A.K.A. The Karaoke Queen)
P.S. Great price for Ebtech Hum X Voltage Hum Filter on:

Sam Ash.com.......$59.77 (free shipping)

THX Again!

http://www.samash.com/webapp/wcs/sto...ched=&x=21&y=6
Reply With Quote
  #4  
Old November 1st, 2013, 08:33 PM
Karaoke Kiwi Karaoke Kiwi is offline
Registered User
 
Join Date: Mar 2007
Location: Hounslow, London
Posts: 86
Re: Humming Annoyance

I have just had this problem now and I was switching cables and stuff and when I unplugged the power supply it went away. I always carry a spare power supply with me and when I plugged it in it worked fine.

Good Luck
Reply With Quote
  #5  
Old November 1st, 2013, 11:25 PM
GwenButler GwenButler is offline
Registered User
 
Join Date: Jan 2008
Location: Waldorf, MD
Posts: 188
Re: Humming Annoyance

Thanks.

The Ebtech Hum X Voltage Hum Filter I purchased resolved my issue.

By the way, I've also found that using my laptop with battery power can also cause a humming issue. Hard to debug this problem when power adapter is plugged in but nothing being feed. :O

I've learned to verify power supply first whenever I am troubleshooting humming issue.

Happy Trails!
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


All times are GMT -4. The time now is 12:08 AM.


Powered by vBulletin® Version 3.7.1
Copyright ©2009 - 2024, Jelsoft Enterprises Ltd.
The contents of this forum are copyrighted by Micro Technology Unlimited, 2000-2008. Use of any material from these Forums is prohibited without written agreement from MTU.