Sound Masking System - White noise - diyAudio
Go Back   Home > Forums > General Interest > Everything Else

Everything Else Anything related to audio / video / electronics etc) BUT remember- we have many new forums where your thread may now fit! .... Parts, Equipment & Tools, Construction Tips, Software Tools......

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 2nd April 2007, 06:12 PM   #1
diyAudio Member
 
Join Date: Dec 2005
Location: Sao Paulo
Send a message via MSN to -_nando-_ Send a message via Skype™ to -_nando-_
Default Sound Masking System - White noise

http://en.wikipedia.org/wiki/Sound_masking_systems

Sometimes I REALLY need some silence in my office, I work in a house with many other people working together. I have my own booth, but I really need silence. I think that I'm not the only one, lot of more people also need silence

I'm wondering, this thing should be easy to build ! Is it just an amp, with speaker and a white noise generator?


Best Regards !
  Reply With Quote
Old 3rd April 2007, 03:05 AM   #2
Ron E is offline Ron E  United States
diyAudio Member
 
Ron E's Avatar
 
Join Date: Jun 2002
Location: USA, MN
I would suggest some sort of noise cancelling set or just some circumaural headphones with good isolation. I have a set of headphones I wear at work - often with no music playing. For this use, comfort is more important than sound quality.

Sound masking is useful if your office is unnaturally quiet and you hear every little noise. Most HVAC systems are designed to provide some white noise. Some, however, make too much noise and you need to block it out....
__________________
Our species needs, and deserves, a citizenry with minds wide awake and a basic understanding of how the world works. --Carl Sagan
Armaments, universal debt, and planned obsolescence--those are the three pillars of Western prosperity. —Aldous Huxley
  Reply With Quote
Old 3rd April 2007, 03:15 AM   #3
diyAudio Member
 
Join Date: Feb 2005
Location: Northeast PA
This is usually done with two noise generators (for absolute random generation) and these days an audio DSP for setting the curve. And amps & speakers. If you take a look @ the curve, you need LF drivers/subs, too.

I do this commercially, it is not that hard & is effective for privacy. That is the main purpose. Call centers, executive areas where sensitive subjects are discussed, etc. Also for masking HVAC & machine noise.
Too much ambient noise becomes stressful, so there is a balance.

Take a peak:
http://www.atlassound.com/support/wP...undMaskSys.pdf
Cheers!
  Reply With Quote
Old 3rd April 2007, 11:57 AM   #4
diyAudio Member
 
Zero Cool's Avatar
 
Join Date: Sep 2004
Location: MN
I design and install sound masking systems for my day job. we never use subs. dont know anyone that does. everything below 125hz we just let the speakers do what they can and we apply a rolloff above 2K. the most important thing is smooth coverage across the floor. lights, vents, etc can cause hotspots. we spend a great deal of time moving speakers and aiming cans to have less then 2-3db of variation across the room.


Zc
  Reply With Quote
Old 4th April 2007, 03:10 AM   #5
diyAudio Member
 
Join Date: Feb 2005
Location: Northeast PA
Interesting. I have installed many systems without LF/subs, but the better designed systems almost always have them. A company out of NYC, I will have to look them up, does the system design with these. I work for an integration company; we put them in & set them up. Final tweaks by the consulting firm that designs the system. More a blessing than a tweak, usually. We design/build, too.

Yes, hotspots are tricky. 2-3db is very tricky, you are getting into some modes there. Do you use RTAs or SPL meters? And what curve do you use normally? And have you used the Armstrong tiles yet? Have had some fun with them, too.
  Reply With Quote
Old 6th April 2007, 09:07 PM   #6
diyAudio Member
 
Join Date: Nov 2002
I also do some sound masking systems. I have never used subs but have added some to the low end before with good results.
I use a RTA and sound level meter to arrive at the proper level and curve. When it correct its like flipping a switch. I usually use a White brand pink noise generator or something along those lines.

To answer the original question... To be effective the area you are in needs to be treated not just your cube. The equipment needed would be speakers, pink noise generator, EQ, mixer, and amplifier. I normally use a mixer regardless of one input (noise) or masking plus music and page. There are some self contained amplified speakers that produce a sound masking source but these are rarely any help.
  Reply With Quote
Old 31st March 2010, 08:54 AM   #7
diyAudio Member
 
Join Date: Mar 2010
To human ears, white noise sounds like a hiss—sounds such as a waterfall, an aerosol can, and static are all very similar to white noise.
  Reply With Quote
Old 31st March 2010, 10:46 AM   #8
diyAudio Member
 
bobodioulasso's Avatar
 
Join Date: May 2008
Sound masking is certaily good for privacy reasons.
For silence needs, i would rather experiment "sound cancellation"
Active Noise Cancellation - Succeed in Understanding Physics: School for Champions
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
White Noise Active PSU ANDYLASER Swap Meet 5 12th January 2009 06:37 AM
Trends Audio Ta-10.1 - white noise? dalefog Chip Amps 1 5th May 2008 09:05 PM
White Noise, Protruding woofer Code Class D 6 16th January 2008 06:02 PM
White Noise Audio closing down peranders Everything Else 0 19th April 2006 08:45 AM
white noise in subwoofer, home system lucksi Everything Else 0 28th June 2005 04:40 PM


New To Site? Need Help?

All times are GMT. The time now is 04:58 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2