What is the purpose of the sound card driver?

Sound card driver refers to the multimedia sound card control program, which is called "sound card driver" in English.

The basic function of a sound card is to convert the original sound signals from microphones, tapes and CDs and output them to audio devices such as headphones, speakers, power amplifiers and tape recorders. , or through the digital interface (MIDI) of music equipment to produce the sound of synthetic instruments.

Under the action of the driver, the sound card can output the files stored in MIDI format to the corresponding electronic musical instruments and make corresponding sounds. Make electronic musical instruments under the command of sound card.

Extended data:

The working principle of sound card driver:

The working principle of sound card driver is actually very simple. Microphones and speakers use analog signals, while computers can process digital signals. They can't mix. The function of sound card is to realize the conversion between them.

Sound card can be divided into two parts in structure: analog-to-digital conversion circuit and digital-to-analog conversion circuit. The analog-to-digital conversion circuit is responsible for converting analog sound signals collected by sound input devices such as microphones into digital signals that can be processed by computers. The digital-to-analog conversion circuit is responsible for converting digital sound signals used by computers into analog signals that can be used by speakers and other equipment.

Baidu encyclopedia-sound card driver

Baidu encyclopedia-sound card