Solved

Video & Audio Microphone USB Device :: Hissing Background Sounds on Playback :: 4:43AM!

Posted on 2007-11-19
20
1,266 Views
Last Modified: 2013-11-09
Hello,

I just purchased a Windows Lifecam, and it all works perfect, but I cannot get rid of an annoying hissing-bumpy ringing tone after recording any sound.

I've tried:

-- complete reinstall (several times)
-- Tried all USB ports (in and out of my video card)
-- Tried all variation of sound/volume adjustments
-- Search google relentlessy but could not find anything valuable!

Notes:
-- hissing sound stops when the volume is off or muted
-- The hissing is not caused by voice. its the same if i just let the mic site silent.
-- hissing is slightly uneven and rigid sounding
-- do not have this issue when another mic is plugged direct into the mic port
-- It's 4:43am now
-- Hissing only happens on playback of sound file
-- hissing also occurs when i use Windows sound recorder (and through the same mic)

This device is a USB that runs video and sound.

Does anyone have any ideas?
0
Comment
Question by:w3developing
  • 9
  • 6
20 Comments
 

Author Comment

by:w3developing
Comment Utility
More note:
-- Hissing gets louder and softer based on volume when playing back
0
 

Author Comment

by:w3developing
Comment Utility
Another note:
-- It's more like a light fax machine sound but not jumpy like a fax. I just wanted to clarify the hissing is said ) I guess it's hissing)

-- I tried in multiple sound players for playback to see if it was player related.

-- When I look at the mic EQ to test voice volume there is a persistent green bars unless i turn the volume all the way off. The bars raise when i raise the EQ volume even when I am not talking.
0
 

Author Comment

by:w3developing
Comment Utility
seems like my pc is putting off some "feedback" through the usb.. Is this possible?
0
 
LVL 91

Expert Comment

by:nobus
Comment Utility
i would test it on another PC, to be sure it is the PC or the cam
Other options are grounding and shielding
0
 

Author Comment

by:w3developing
Comment Utility
Hi nobus,

I figured it all out  a few hours ago. Believe it or not, I spoke with a Staples staff member about possible camera issues, and his final suggestion before return was: Move your wireless router. So I moved it about 6 ft away (it was about 4ft before), and the issue was resolved!

0
 

Author Comment

by:w3developing
Comment Utility
You know... I thought I was at a total loss w/ my pc...
0
 
LVL 91

Expert Comment

by:nobus
Comment Utility
good info !  you can ask to refund your points then
0
How to improve team productivity

Quip adds documents, spreadsheets, and tasklists to your Slack experience
- Elevate ideas to Quip docs
- Share Quip docs in Slack
- Get notified of changes to your docs
- Available on iOS/Android/Desktop/Web
- Online/Offline

 

Author Comment

by:w3developing
Comment Utility
Yeah it's great info. I actually suggested to the guy: Do you think my phone or router would cause this (of course I think of this while Im on the phone and not before!)? And he said give it a shot... so I should take the credit ; )

I'm sure someone will be able to solve their "hopeless" problem now like I had. I think this is really one of the only posts around to address this - at least easy to find.
0
 

Accepted Solution

by:
w3developing earned 0 total points
Comment Utility
Well, since I found out what the problem was I will share it.

Be ready it's complex. It is very complicated:

It was all caused by the lights in my office. That's it. Fluorescent and standard bulbs both caused the hissing. Lights off == no hissing : )

Hope my solution is as easy to understand as the problem itself.
0
 
LVL 91

Expert Comment

by:nobus
Comment Utility
just a note : if it is caused by the lights, then they are not properly installed (the filter  capacitors are bad or not in place imho
tx for the info !
0
 
LVL 91

Expert Comment

by:nobus
Comment Utility
well - vee mod; it is a shame you can't give additional info without interrupting the request !
Bad programming maybe ?  lol
0
 

Author Comment

by:w3developing
Comment Utility
nobus,

I guess all 9 lights (and variations) I tested are "bad". I brought in external house lights and used several different bulbs and styles of lights - all to the same issue, but note each one have difference variations of frequency and "hiss". All my lights are bad, but they certainly light the room well : )
0
 
LVL 91

Expert Comment

by:nobus
Comment Utility
>>  All my lights are bad,   <<   that was NOT my conclusion; some can be bad, or worse, but not ALL.
then you need to check the proper grounding of the AC, and PC
0
 

Author Comment

by:w3developing
Comment Utility
Hmmm.. ok "proper grounding of the AC, and PC" .. do you have any suggestion on how to ensure this is all grounded properly? My pc is plugged into an APC backup. And I assume the PC grounding would be internal - but there is no hiss when the lights are off, so it's an odd situation. All lights that I have used and tested with cause some type of hiss - it's pretty scientific at this point : )
0
 
LVL 91

Expert Comment

by:nobus
Comment Utility
you can measure if the PC ground (case) connects to the AC ground.
For checking the AC ground, you need an electrician, or specialised equipment (ground meter)
0

Featured Post

How your wiki can always stay up-to-date

Quip doubles as a “living” wiki and a project management tool that evolves with your organization. As you finish projects in Quip, the work remains, easily accessible to all team members, new and old.
- Increase transparency
- Onboard new hires faster
- Access from mobile/offline

Join & Write a Comment

A little history Back in 1997 when I built my first custom computer using the revolutionary Gateway website I didn’t have much to choose from except for the CPU. The race between computer manufacturers was held back by processor manufacturers. They…
Introduction: When experiencing some peculiar problem with the functioning of your PC, how many times has it happened that you look for a solution and even google can’t help? It could be that you are one of the only few people on earth who ma…
Polish reports in Access so they look terrific. Take yourself to another level. Equations, Back Color, Alternate Back Color. Write easy VBA Code. Tighten space to use less pages. Launch report from a menu, considering criteria only when it is filled…
This video demonstrates how to create an example email signature rule for a department in a company using CodeTwo Exchange Rules. The signature will be inserted beneath users' latest emails in conversations and will be displayed in users' Sent Items…

771 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

11 Experts available now in Live!

Get 1:1 Help Now