Question about IBM ThinkPad R40 2722 Notebook

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There is no sound from speakers, but the microphone when rubed on the keyboard makes the speakers make noise.

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Try changing sound options from right bottom beside the clock, you will find that the speakers are muted for line out but the microphone is not muted, just change it, hope it works

Posted on Jan 31, 2010

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Speaker problem


I don't know exactly what to say about this one, but if your speakers are acting like microphones, you might want to be sure you've got them plugged into the speaker jack, not the microphone jack.

Speakers technically CAN pick up sound vibrations, but generally they don't unless they are specifically set up that way by professionals. That's all I've got, sorry.

Nov 28, 2013 | Acer Aspire 4736Z 4736G 4738ZG 4733Z...

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

Acer TravelMate 5620 inbuilt microphone permenantly on.


It sounds like your AC Adapter Power Cord might be causing the problem. Try unplugging the power cord and running off the battery and see if you still hear the the noises. If not, buy a new power cord. The guys at: http://www.generalsystemsconsulting.com sells power cords for $35.00 and they will drop ship it to you. Their cords meet Manufacturers Original Equipment (OEM) specifications. They don't sell the one size fits all that the big box stores sell that could damage your motherboard.

Mar 10, 2012 | Computers & Internet

1 Answer

Recently purchased the Shure Beta58A microphone for my son to use with his Yamaha MO8 keyboard. We cannot determine where to connect the mic into on the back of the keyboard. I have a feeling that the...


I cannot say I'm certain of the keyboard model in question. However, one does not usually plug a microphone into a keyboard. Does it have built-in speakers?
BUT, assuming it is made to accept a microphone, there should be a "mic in" or "microphone input" jack on the keyboard. DO NOT plug into the MIDI jacks (if you find the right adapters). MIDI is a control protocol so keyboards and sound modules can "talk" to each other and one keyboard player can control multiple sounds from one keyboard.

Dec 28, 2010 | Shure Beta 58A Professional Microphone

1 Answer

I have a Fender Passport 150 and my microphone is won't work but everything else does......????? Thanx Mike


Mike try the microphone if possible on another set If the mike makes a noise check for frayed and bad cables. As far as I know the mike is a dynamic mike and connect it to the speaker of a small transistor radio and it should sound.like a small speaker for dynamic mikes and ordinary speakers work just the one as a generating device(Speaker) and the other as a sound pick up Look at small to way radio's the send is the speaker a mike and on receive it is a speaker, Hope this help

Nov 14, 2010 | Lectrosonics FENDER PASSPORT PD-150 + 1...

1 Answer

Can't get sound from our logitech speakers


Normal 0 Go to Control Panel and Click on Sounds, Click on Audio, then Click on the Microphone. Then Click on the drop down and select Camera Microphone.
Click OK and it should work.
Hope this helps. Bud

Feb 05, 2009 | Logitech Z-560 Computer Speakers

2 Answers

Logitech x530 hissing noise


I had the same problem for the longest time with my set of Logitech 540 5.1 speakers. Turns out the solution was pretty simple. All I did was open the Master Volume controller and mute the Microphone. Hissing went to zero. Sound is great now.

May 15, 2008 | Logitech X-530 Computer Speakers

3 Answers

Screeching noise


right click on the speaker icon in your taskbar, select Open Volume Control. If you do not see the Microphone control select options>properties and select it from the list of check boxes. Press OK. Check the mute box for your microphone.

Jan 04, 2008 | Lenovo ThinkPad X60 Tablet PC

1 Answer

Computer making weird sounds


possibly audio feedback, but don't know why. Try disabling the microphone input (for help, post back) as a test. If now gone, re-enable mic but decrease gain slider (for help, post back).

Nov 17, 2007 | Toshiba Satellite A100-S8111TD Notebook

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