Understanding, function, and the type of sound card
Definition
Sound Card is a computer hardware that functions to process data in the form of audio or voice. Sound Card can be divided into two types based on their physical. Sound card has a format that supports sound system sound output, for example, the sound card has 4 channels must use active speakers with 4 speakers and 1 subwover to obtain optimal results. Examples of brands that Creative sound card and Rocketfish .. Judging from the way of installation, sound card divided by 3:
- Onboard Sound Card, sound card that is attached directly to the computer's motherboard.
- Sound Card offboard, ie sound card installation in the slot ISA / PCI on the motherboard. On average, now using PCI
- External soundcard, use the sound card is connected to a computer through an external port, such as USB or FireWire
Ways of working
· When you listen to the voice of the sound card, the sound in the form of digital data waveform .wav or mp3 sent to the sound card. This digital data is processed by the DSP (Digital Signal processing: digital signal processor) work with DAC (Digital Analog Converter: Analog to digital conversion). Converts the digital signal into an analog signal, which is then amplified and the analog signal is issued through the speaker.
· When you record sound through a microphone. your sound in the form of analog processing by the DSP, the mode ADC (Analog Digital Converter: Convert analog to digital). Converts the analog signal into a digital signal that is sustainable. The digital signal is saved in a table format or regular waveform written .wav (wave) in a disk or compressed into other forms such as mp3
1. Sound Card On Board
An audio facility that is already installed on the motherboard chipset and performance in the form of on-board sound card still need the help of the main processor. Sound card on board can be found in almost all types of motherboards. If we just need a sound card for music, sound card of this type is a good choice.
2. Sound Card PCI
A sound card to be placed in the slot PCI card motherboard.Sound this type has the advantage on the resulting quality. If only used for standard purposes, such as listening to music, the sound card of this type is too expensive. But if we use it to play heavy games or activities sound recording, sound card of this type is the right choice.
