Question about Bose QuietComfort 3 Acoustic Noise Cancelling Consumer Headphones

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Loud high pitched feedback sound when you lie down and block the external microphone.

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Posted on Jan 02, 2017

caroldon
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SOURCE: Very loud and high pitch

This can be serious as the sub woofer driver or the feed circuit is faulty.
Unless the unit is taken out which is important the circuits cannot be traced. Try to disconnect the input and confirm the output or the line of signal path must be traced using a audio till the suspected noise producing section is isolated.

Posted on Mar 19, 2011

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1 Answer

High frequency noise form my 7.1 surround sound system


Is the microphone live? If so, what you're getting is called "acoustic feedback". Any room sound gets in the mic, gets amplified, comes out the speakers, and then gets picked up by the mic again. Louder and louder until you get to the maximum your system can do.

The solution is to turn it down. . . until it stops.

May 13, 2015 | Acesonic HKR-710 340-Watt 7.1 Surround...

1 Answer

High pitch sound


this sounds like the microphone is picking up feedback, if you are not using the mic then go to control panel then sound and disable the microphone

Apr 19, 2014 | Acer Aspire 5735-6694 Notebook

1 Answer

Loud high pitch feedback when audio plays


I can only think of tree possibilities:


1. Feedback created by a dry join on a circuit board
2. Feedback from a cooling fan that has malfunctioned
3. Feedback from a microphone that has malfunctioned

I would try disabling or fiddling with the settings on the microphone first, if that's the problem, I recommend you disable it and if you use a microphone regularly, the external alternative is quite a cheap way of replacing it, if its a cooling fan, and you have the knowledge to disassemble the laptop, try disconnecting it for a short time, if the feedback stops when you disconnect the fan, you need only replace the fan, if these two methods don't solve the problem, I would recommend you have a professional look at it for you, dry joins are quite hard to find and require special equipment to fix, and if that's not the issue, the professional should be able to find the problem anyway.

Good luck

Mar 13, 2013 | Acer Computers & Internet

1 Answer

Logitech speaker feedback


Feedback is a sharp, loud noise that can come through the earphones of a headset unexpectedly---it occurs when the headset is getting sound (feed) from someone else speaking or playing music into a microphone. This sound can create a dangerous situation for someone who is operating expensive equipment or flying a plane at the time since it can disable hearing temporarily.
If you experience feedback often, it could also lead to serious hearing problems.

Mic Too Close to the Speaker or Volume Too High
The main cause of a feedback sound in a headset is proximity to a speaker. If a person holding a microphone on the other end gets too close to a speaker, it creates a loop of re-amplified sound that results in the loud, screeching noise. When the volume on the other party's microphone is too high, it is more vulnerable to picking up unwanted noise and feedback from speakers and sound output devices in the room. So make sure that you ask the other party to turn down the microphone to a normal level and stay far from speakers. b> Two Microphones Gathering Same Sound b> When the other party places two microphones too close to each other, it could cause feedback. When positioned toward the sound source (such as a person speaking) the microphones will both pick up the same audio and compete with each other when creating the output of sound, causing a sharp noise in your headset. This problem, called acoustic phase interference, is resolved by simply ensuring that the other party uses one microphone at a time. Poor-Quality Headset or Microphone b> One common cause of feedback is simply a poor-quality headset or microphone. Most modern headsets and microphones have noise-canceling features that manage and kill feedback before it has a chance to occur. These noise-canceling headsets are essential for pilots and aviation crew members. If you hear sudden feedback that is strong enough to hurt your ears, the headset or microphone is simply not properly equipped to actively cancel that unwanted noise before it hits your ears. Buy a higher-quality noise-canceling headset to manage the feedback noise when you're going about your tasks. Hope this helps.

Dec 23, 2012 | Logitech Z623 Speaker System

1 Answer

Humming sound when I record


Sounds like it might be feedback from another source or perhaps a loose connection. Try moving the microphone away from power sources or anything that might cause feedback, such as speakers etc.

Apr 24, 2012 | Samson Meteor Mic - USB Microphone

1 Answer

There is a horrible echo whenever i try to record and then there's a loud noice that sounds like a very high-pitched whistle and i don't know what to do.


This type of audio feedback loop can happen on any mic if you are playing back audio at a loud volume on speakers that are close to the mic while the mic is on - which tends to happen on Skype calls. Try lowering your speaker volume or using headphones to hear the audio, then speak into mic, and the feedback should be reduced.

Apr 12, 2012 | Labtec Microphone Microphone

1 Answer

My laptop keeps making a loud high pitch sound when ever I higher the volume on my computer. How do I fix this?


Maybe the speaker is feeding back through the microphone? Turn it's volume off or down.

Feb 05, 2011 | Toshiba (P000257700) Microphone

1 Answer

I get a high pitched noise when in pro tools


I don't know what devices are connected to your audio input ports, sounds like gain is too high on a microphone or guitar or speaker setting too close to your work station, sound like feedback loop.

Nov 02, 2010 | M-Audio Fast Track USB (FASTTRACK) Audio...

1 Answer

Awful High-pitched Noise and Echo Feedback


Normal 0 Two things can cause static.
First, If you have your speakers turned up to high it will give you feedback causing distortion and static. I recommend using a headset when videoing.
Second reason is, if you are using a laptop and have added an external microphone between the two it will cause distortion and static.
Not knowing the configuration of your computer makes it harder to analyze the problem.
So hope this is of some help. Bud

Jan 17, 2008 | Microsoft LifeCam VX-6000 (68C-00001)...

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