Question about Compaq Evo N610C Notebook

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Audio in shut off ??

Any idea how to shut off the audio in feature. can not shut it down. using external speakers causes feedback .. Rick J

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If you don't want to use your Audio adopter then try these steps:

Step 1). Start -> Control Panel.
.......... Double click on system icon (if its not appear click on Switch to Classic view on left pan).

Step 2). Click on Hardware then Device Manager

Step 3). Click on + sign against Sound, video and game controler

Step 4). Right click on your Audio contrloller from the list.

Step 5). Select Disable prom the pop-menu appeared.

Step 6). Click on Yes for your confirmation.

It will mark a red sign on the controller icon and your audio is now stoped.

Note: To make is enable agine do the same and Select the Enabled option from the pop-up menu.


Posted on Mar 24, 2008


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Feedback 3-4 mtres from speakers

Feedback is caused by having the volume up too high or being too close to the speakers. Turn mic down a bit, feedback goes away.

Better speakers and mic will help.

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Check your audio settings. Feedback is a condition caused when you are transmitting and your audio is coming out of a speaker (headphone) and is picked up by the microphone. Try turning your audio down; reducing your microphone gain; and perhaps using a wind sock (microphone cover) over your microphone to reduce the amount of feedback audio entering into the microphone (manual pg 13).

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Can you explain your terminology? Feedback or Standing Waves? Typically, Feedback is audio feedback through the speaker and back into the microphone of the CB or out of the external speaker into the mic. It can also be RF Feedback that is caused when the system. If it is audio feedback, it could be that someone has installed a T
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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.

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Squell when i key up

Squealing sounds come from feedback. Many times is is from an adio source and speaker. Check your radio's switches and jacks to make sure that any external speaker set up in the passenger compartment of the car is connected to the "EXTERNAL SPEAKER" or "EXT SP" jack, and not into one labeled "PA". PA is for "Public Address". When the selector switch is set to "PA" instead of "CB" and the mic's Push To Talk (PTT) button is pressed, what ever sounds picked up by the mic are sent directly to the PA speaker, NOT transmitted on the CB channel. The sound is a high pitched squealing noise that is reduced or eliminated when the mic "gain" is reduced; speaker volume reduced; headphones are used or the distance between mic and speaker is increased.

The feedback can also be from "RF", or radio frequency energy. RF energy feedback is different from audio feedback in that the way to eliminate it is to properly tune or "match" the antenna to the frequency of the RF energy from the radio (in this case, about 4 watts on the low 27Mhz range). This is done by inserting an SWR meter between the transmitter's antenna connector and the antenna. Following the directions included with the meter and adjusting the physical length of the antenna's whip up or down in 1/8" increments will allow you to quickly find the lowest match possible over the range of CB frequencies.

Failure to obtain an acceptable match ratio can result in damage to the transmitter and RF burns to the operator. A match of 2:1 (two to one) is acceptable, but the lower you can get the better. Anything in the 1.5:1 (one point five to one) down to 1.1:1 (one point one to one) range is excellent - with 1.1:1 being ideal.

I hope this helps & good luck!

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