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How Does A Sound Card Work


A sound card is a computer card which facilitates the input and output of the audio signals of the computer program. The typical use of the sound card is to provide the audio components from the multimedia applications like music, video, presentation, games etc.

In many computers the sound card comes in-built, but some of them are there where an extension sound card is required to provide the audio capabilities of the computer. Almost all the computers require a sound card; it has become a common thing for each and every modern personal computer. The sound cards have two basic ways to translate the digital data into analog audio sound. They are FM synthesis and wave table synthesis. Long before when the sound card was not invented, the computer could make only one sound that was a beep. The computer could manage only to produce a beep with frequency and duration. The beep actually acted as a warning or a signal. Later, the developers of the computer created music and other sounds for the games and also when you start your PC.

Fortunately, the computer with sound capabilities came into being, and increased greatly during the 1980s. Today there are several manufacturers who are producing the sound card and have introduced add on card that is basically dedicated to control the sound that is produced by your personal computer. The computers that are manufactured today along with the sound card can do far more than just the beep; it can produce 3D sounds for the games or surround sound from the compact disk or the DVD. They also come with the capacity to record sounds from the external sources and play them later on. In addition with the basic components that are required for the sound processing by the computer, many sound cards also need additional hardware connections. They are the digital signal processor, which takes some of he load from the central processing unit of the computer so that it can perform the calculations of the analog and the digital conversion. It can process multiple sounds and channels.

If the computer does not have the digital signal processor of its own, it uses the central processing unit to carry on its task. Like the other cards of the computer, the sound card also has its own memory, so that it can provide the user with faster data processing. Most of all, the sound card provide the user with the minimal facility for the connection of the microphone and the speaker. Also there are some sound cards where you will find a lot of input and out put connections for better performance of sound while listening music or playing games.

Most of the sound cards have a line of connectors, so that it can grab the signals from the various sources. The sound card digitalizes the signals and stores them in the hard disk of the computer for further processing. Now enjoy all your favorite music and games of your PC with the sound card.

 


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