Microsoft lifechat lx-3000 - whistling distortion from the microphone

Switch off the speakers and try again headset.

Sound cards usually feature a digital-to-analog converter (DAC), which converts recorded or generated digital data into an analog format. The output signal is connected to a headphone amplifier, or external device using standard interconnects, such as a TRS connector or an RCA connector.

http://en.Wikipedia.org/wiki/Sound_card

Most of the cards her consumer have a separate audio input (often used to amplify the audio output of the CD-ROM) which is a good way to test the audio amplifier. In general, if a sound card has both speaker and output line, the speaker output is likely to be noisier than the output line (any hiss and hum will be more noticeable in headphones) . Unfortunately, the line output will probably be of insufficient current drive for all except the most effective helmet (look for models with sensitivity of 100dB sides or more). If necessary, compare the soundcard Headphone amplifiers with good audio specifications. To enhance the sound quality or for more volume, consider adding a line to the outputs headphone amplifier. Some computers radiate RF frequencies that may cause a headphone amplifier humming, then try to select one with a good RF shielding.

http://gilmore2.Chem.Northwestern.edu/FAQs.htm#misc

TrueRTA calibration tutorial

http://www.diymobileaudio.com/forum/how-articles-provided-our-members/45407-TrueRTA-calibration-tutorial.html

TrueRTA software (freeware)

http://www.TrueAudio.com/rta_abt1.htm

Go to control panel, sounds, reading devices, your audio device properties list there, tab improvements and then check the "disable all enhancements." Set to zero if necessary and I hope that your whistle no longer exist, mine is not at least. I hope this helps.

http://Forum.NotebookReview.com/Alienware-M14x/583992-M14x-audio-hissing.html

Thanks again for the effort, the problem is the sound I get is not released. This problem has been fixed (it was just my mic, echoing my helmet by some Skype problem caused) this is the microphone generating noise that comes out of nowhere, it looks like a rain/Static/hiss noise/white noise and can be heard by everyone I call on Skype etc and can also be heard by me when my system starts and I can hear my mic , I have turned off my speakers, removed my sigmatel audio drivers and it did not help, I tried to start with all other windows drivers stops and same problem persisted. I'm starting to think that it's really a hardware problem as opossed to a software problem. I'll take the headphones back tomorrow and hope that they can tell me more on this subject.

Thanks for all your time and effort, I apoligize nothing helped me
Sincerely, Gilles.

Tags: Windows

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