-- دج

The most indispensable part of a Home Theater System is the speaker. Speakers are used to connect to a computer to generate sound, which are one of the most common output devices. Some speakers are designed to connect with any kind of sound system, while some can be hooked up only with computers. With the computer speaker like 2.0 Desktop Speaker, the computer's sound card creates a signal that is used to produce sound. The primary objective of speakers is to offer audio output for the listener. The electromagnetic waves are converted into sound waves through the speaker as they are transducers. The devices, like an audio receiver or computer, give audio input to speakers, which may be in the form of analog or digital. The function of the analog speaker is simply to magnify the analog electromagnetic waves into sound waves.

The sound waves are produced in analog form, but first, the digital input is converted into an analog signal by digital speakers then the sound waves are generated. The amplitude and frequency define the sound produced by speakers. The frequency determines the pitch of the sound of how high or low it is. For case, a bass guitar or kick drum generates low sounds waves, while a soprano singer's voice produces sounds in the high-frequency range. The sound quality, how clear it will be, depends upon the speaker system's ability; if it is able to accurately reproduce sound frequencies, it can be the best indicator to determine audio quality.

There are numerous speakers that consist of different speaker cones, which make them capable of offering more accurate sounds for different ranges. The three-way speakers generally contain a subwoofer like 2.1 Subwoofer Speaker, mid-range speaker, and a tweeter, whereas the two-way speakers have a mid-range speaker and a tweeter. The air pressure created by the speakers' sound waves determines the loudness or amplitude. And also, there are speakers for different shapes like Portable Speaker, Tower Speaker(2.0 Tower Speaker) and speakers for different usages like Multimedia Speaker, Party Speaker and Bluetooth Speaker.

Like a sound card of computer and some other audio sources produce the signal low, which may need to be augmented by the speakers. This is the reason, to amplify the signal, most of the external computer speakers use electricity; hence, they are amplified. Speakers that have the ability to increase the sound input are commonly known as active speakers. If a speaker can be plugged into an electrical outlet or consists of volume control, you can easily determine if the speaker is active. The passive speakers are those that do not have any internal amplification; these speakers need a high level of audio input as they do not increase the audio signal.

Usually, speakers come in pairs that led to producing stereo sound. It means, on two separate channels, the left and right speakers produce audio. Music sounds much more natural when you use two speakers, as in this condition, our ears hear sounds from the left and right at one time, which makes sounds much more natural. Furthermore, surround systems can produce more realistic sound as they may include four to seven speakers, including a subwoofer.