Weird noise from Acer Aspire 3000

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.

Your microphone volume is set too high. That causes ambient sounds to be amplified, picked up by the microphone and amplified even more.

Could be a bad fan assembly.

you should check the configuration of the microphone and see if the volume is very high which leads to feedback with the speakers and produces the squeak

Speakers could be to close to the Mike or to volume loud. Move the mike away from the speakers or turn them facing away from the mike.
Hope this is of some help. Bud

i have special driver for you , where do you live ??

try using a external usb microphone sounds like the internal mic has been exposed to moisture or has a short in it.

The usual cause of microphone noise is caused by audio settings where the microphone gain may be turned up to high causing it to pick up noise from the computer or built in speakes. This can cause noise ranging from an odd hum to a high pitched squeal.

Check your sound setting first

Hi there.
Your microphone is on, and when you close the lid it is closer to the speaker. It needs
a loud noise (like closing the lid faster) and it enters into a feedback loop.
We need to find a way to make the microphone not play back.
Try left clicking on the speaker icon in the bottom right of the screen, and click playback
options. Here mute the microphone, and see if it solves your problem.

Good luck

put your mic on mute for playback. So the mic works but it doesnt play it from the speakers at the same time.



If you dont see microphone on the list click on
options then settings
put a X on the playback -> microphone.

close settings

its now shown in the panel, click on mute and it wont feedback the sounds to you anymore.