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The computer microphone allows you to expand your uses of the computer. It is your voice to the world. When selecting your microphone for computer usage at the computer retailer or e-tailer you will see a broad range of products. It is important you know what you will be using this microphone for. Will you be using the mic for dictation or Internet phone conversations? Will you be using it for recording music, or pc karaoke, or your band? Are concerts your point of interest? Are you looking to learn how to podcasts  or podcast? Each of these considerations requires different specifications. The specs are important in matching your needs to the benefits each microphone provides.

Humans can hear sounds in a frequency range of 20 Hertz (Hz) to 20,000 Hertz (20 kHz). This upper limit tends to decrease with age; most adults are unable to hear sounds above 16 kHz. The ideal computer recording microphone is one that reproduces sounds equally, across this frequency range.

If you are using the computer microphone for voice, almost any one will do. The VOIP (Voice Over Internet Protocol) technology has minimum demands on the mike. In some cases people find it convenient to use a combination headset and microphone, that's your choice. There are mics available that are wireless, again, your choice.

As you expand your uses to music, you will require a mike with a better frequency response. By their nature, microphones distort the sounds they pick up, thereby requiring careful matching to their use. Also, you may need an omnidirectional microphone, one that picks up sound equally from every direction.

Finally the microphones used for a concert, have to provide the broadest frequency response for overall use, while at the same time using individual mics with a narrow frequency response for each instruments. With each mic matched to the instrument it is paired with. Another consideration is using noise canceling microphones, ones that will reduce the unintended background sounds that are present.

The sensitivity of the pc microphone refers to the output level as expressed in millivolts (mv), in relation to the input level or sound pressure level (SPL) measured in decibels (db). This is also true for the laptop microphone.

Most computer microphones come equipped with a 3.5 mm stereo plug to connect to the sound circuitry on the motherboard or sound card. A new arrival is the USB microphone and USB headsets or the combination computer headset with microphone, which connects directly to a USB port and inputs and output digital data. The microphone has a built in pre-amp and an analog to digital (A/D) converter, while the headset has a volume control and a digital to analog (D/A) converter, thereby allowing it to bypass the sound circuitry.

The wireless microphone for computer has arrived on the scene in recent years; it is a two piece unit. The first connects to the computer or sound card with a stereo plug or USB connector. The second is the microphone section in which the sound is accepted. Instead of the link between the two pieces being a wire or cable, the communications link is a wireless or radio signal. This allows the user to move around and not be constrained be the length of the wire or cable.

It is generally better to get a low impedance microphone, one whose impedance is 600 ohms or less. But, it is more important to match the impedance to the sound circuitry it is connected to. If the difference in the impedances is to great, signal strength is lost.

After reading and understanding this material about the computer microphone, iconthe next step is to evaluate different microphones from the many microphone manufacturers at your favorite online computer store. As you can see there are many to choose from. See if you can make a selection based on your needs and then purchase microphone.

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