Question about IBM ThinkPad T30 2366 Notebook

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Buzzing/humming sound when mic is inserted while on AC power

I love to records sounds but my problem is that unwanted noise(buzzing/humming) sounded when I connect the microphone to the port while on AC power. Please help.

Thank you

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  • JohLo May 27, 2008

    shaggryrat, thanks!



  • Anonymous Jan 06, 2009

    with a dell 1520 and Zalman microphone

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If its not usb mic you will have the humming
if it is a usb mic the port that you connected to needs a mic to be further away from comp your picking up a static charge from comp to mic

Posted on May 26, 2008

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If i record in my compaq nx9500 after the recording if i play it it will give me some sound under the recording


If you're using the built in the mic that's feedback because laptop mics are low powered they have the gain boosted in Windows. Try using an external mic and check the setting on the volume settings for recording devices. (Right click the volume icon)

If it's a buzzing/squealing noise you're concerned about that might be "ground loop" usually caused by having the laptop plugged into the mains or less commonly having loads of cpu intensive applications running in the background.

Also if the laptop is on a hard surface make sure that it isn't vibrating because the mic sensitivity will pick it up and because of the gain boost it will be amplified.
Gain = Volume

Hope that helps

Feb 26, 2015 | HP Compaq nx9500 Notebook

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My Ac/dc adaptor for my R/C boat is making this buzzing or humming sound when i plac it in the socket, it make the sound before i attach the battery pacj for charging and after attaching the pack the


If it is charging properly I would not worry about it. Chargers are a device that ALWAYS make noises, there just often out of our range. If it is making a VERY loud noise, then I would suggest locating a replacement power supply.

Dec 31, 2013 | PC Laptops

1 Answer

Mic not working on toshiba a665 laptop; hisses


Get rid of all possible noise in your recording space. Pick the least noisy area to record in. Turn off any fans, heaters, air conditioners and other nonessential devices. Even an extra laptop or idle gaming console makes noise, so if you're not using it, shut it off. Close the doors and shut the windows. Place your microphone away from any remaining noise sources, including power sources. Don't record next to a window, even if it's closed. Remember that your computer makes noise, too. Even sounds your ear can't hear will become noticeable once you amplify your recording. Finally, turn off any cellphones. GSM buzz can be picked up in your recording, so do not set the phone to vibrate. Turn it completely off. Get as close to the mic as possible. Positioning for tonality and comfort has to be taken into consideration, but beyond that you simply want to get as close as you can. The closer the microphone is to the audio source, the less background noise will show up in the recording. Turning up your source will accomplish a similar effect. Simply speak louder, or if you're recording an electric instrument, turn up the volume. If your levels start clipping, bring the volume down on the mixer. Tweak the EQ. After your audio is recorded, you can often eliminate noticeable buzz or hiss using the equalizer. If your mixer has equalizer presets, try playing with those before you start recording to see what bands you can turn down to diminish noise. If you're mixing digitally, you can record the audio straight in without any EQ and apply one during the editing process. Finding the right equalizer band to mix down is often a process of trial and error. If it's a hissing sound, it's going to be in the higher spectrum. If it's a buzzing sound, it's probably coming from the mid to lower spectrum. A graphic equalizer is a great mechanism to form a valley in the EQ and move it around until the noise is reduced. Use a speech enhancer plugin. Any good mixing program has one; even something as simple as Apple's GarageBand can do the trick. Or, try searching the Internet for a third-party plugin. The speech enhancer will let you apply some quick tone settings to make a speaking voice sound more professional. More importantly, it will give you the option to dial back the more quiet sounds in a recording. This will help isolate the vocal and push everything out. While this type of plug-in is meant for spoken audio, it can be used -- with mixed results -- on any kind of audio. Know your noise gate. The noise gate is your key to absolutely silent pauses and crystal clean audio. The gate takes out all noises under a certain level and turns them down however much you tell it to. If you find that your desirable audio never gets any quieter than -20dB, you can tell your noise gate to turn the recording down any time audio is not exceeding -25dB. You can even tell it how much to turn it down: all the way for a clean recording, or maybe just a little to allow some natural hiss in. The noise gate appears easy enough on the outside, but can be a little complicated to master. If your settings are too high, you will clip out parts of your recording, making it obnoxiously unlistenable

Feb 22, 2013 | Toshiba PC Laptops

1 Answer

I recently bough a new iGo Green AC Power Adapter to replace the old power supply for my Acer Aspire 5536 laptop. It works find, but now the adapter itself is making a rhythmic buzzing noise that my audio...


I would return it
It sounds like it is not compatible with the laptop.
You need to buy an adapter that has the same voltage/current output as the original it will give the results you are experiencing now.
Some third party adapters are not filtered properly or grounded this is why you are picking up ambient noise.

Jul 14, 2011 | PC Laptops

1 Answer

Dual microphone issue


drewad125

Technically you can not do this. Most sound cards only support one recording device at a time, especially notebooks. With notebooks usually when you plug in a device it will over ride the build in one.

Now some sound cards give you the option in turn all recording source at the same time so if you laptop would support both mics then you could use this option. The down side is you will be recording from ALL source so you will not want any other sounds going on that you do want in you recording. The steps below will help you check this.

***Note step 4 may not say Analog Mix but if it says mix then most likely you have the option to select all your recording sources.***

1. Click START / PROGRAMS / ACCESSORIES / ENTERTAINMENT / VOLUME CONTROL.
2. Click OPTIONS / PROPERTIES.
3. Select RECORDING beneath ADJUST VOLUME FOR.
4. Insert a check to the left of ANALOG MIX.
5. Click OK.
6. Insert an X beneath ANALOG MIX.
Everything being output via the speakers is now the recording source.

Another option is get a notebook card from Creative Labs as they make sound card. Now if you are doing highend recording you might also look at their highend EMU products as well. I included the links to both there sites.

http://us.store.creative.com/Sound-Blaster-XFi-Notebook/M/B001BS3A3E.htm

http://us.store.creative.com/category/25660134781/1/EMUCreative-Professional.htm

Let me know if you have any questions

Issken

Jan 12, 2010 | HP Pavilion dv4000 Notebook

2 Answers

Microphone Help


Go to your sound properties and make sure it's not muted. Also, the recordind device should be the mic. Then open a recording application and give it a try.

Nov 30, 2009 | Toshiba Satellite PSAG0U-02D00M Notebook

1 Answer

Webcam recorded audio have interferance


make sure you only use 1 mic .if that dont work try pluging in a diff mic. most laptops have built in mic's it might be bad disable it in control panel and use new mic

Oct 07, 2009 | Toshiba Satellite A135-S2386 Notebook

1 Answer

Acer Aspire internal mic won't work.


You need to check the record settings and make sure the mic is not muted or turned down to low. Click START, CONTROL PANEL, then SOUND icon. Click the AUDIO tab up top. Make sure that your sound card is selected in the drop down menu under Sound Recording. Now click VOLUME tab. A new window will open up. Click OPTIONS then PROPERTIES. Make sure you have a check by the MIC and click OK. In the Recording Control window, turn the level up for Microphone and make sure it is not muted. Let me know what happens.

May 02, 2009 | Acer Aspire One PC Notebook

4 Answers

Laptop noise interference


Hi,
This appears to be a problem with the soundcard or device. The mic/headphone/speakers are all usually associated with the sound card. you may have had a virus attack or problems with the items drivers. Check the device has no problems:- My Computer/Control Panel/System/Device Manager ( Yellow Exclamation ) denotes Problem. Alternatively, is to disable the Mic Input Via the sound cards control Panel.

Thankyou for using Fixya.

Mike @ compurepair.

Nov 25, 2008 | PC Laptops

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