Microphone noise can be an unwelcome nuisance to anyone attempting to record audio. Thankfully, there are simple actions that can be taken to reduce or eliminate it completely. Start by checking where you have connected the microphone. Noise can be caused when you plug the microphone into a line input jack instead of the microphone jack, for example, and a simple switch may eliminate unwanted sounds.
Check the microphone type next. Microphones that are less likely to produce noise are of the electret condenser variety. To determine whether a microphone is a electret condenser, look at the plug and find the tip. If it's silver and has grooves dividing the plug into three, then the microphone is an electret condenser that can easily connect to a computer's sound card. Dynamic microphones, on the other hand, may present problems with noise due to their increased sensitivity and issues with connecting to sound cards.
An auto-tuning wizard available on some computers may be able to stop unwanted noise. You should be able to test the hardware for any malfunctions, and some tools will even let the user participate in a live test of the microphone to help calibrate a microphone's recording volume. Users who choose to do this must speak with the microphone at an average distance so as not to compromise the results.
In addition, you may be able to reduce microphone noise by downloading programs equipped to handle the noise via software. Software designed to use external microphones for recording may have options to reduce hissing sounds, for example. Other software may clean up unwanted sounds automatically. If unwanted noise persists, try using a preamplifier or a different microphone that has been researched and chosen based on its compatibility with the recording device.
Computer users should also consider using a separate microphone specifically for recording audio. Devices that include integrated microphones, such as webcams, do not always provide satisfactory recording results. This is especially true when the microphone is intended to be used in peer-to-peer audio communication, like Voice over Internet Protocol (VoIP) applications. If the intention is to capture precise audio, like in music recordings, you may have better luck recording with a digital recording device that is separate from a computer. After the recording is finished, a computer can be used for editing purposes.