What is a sound card? The role of the sound card？

What is a sound card?

Sound card, also called audio card (called sound effect card in Hong Kong and Taiwan), is the most basic part of the computer multimedia system, and it is a kind of hardware that realizes the mutual conversion of sound wave/digital signal. The basic function of a sound card is to convert the original sound signals from microphones, tapes, and CDs, and output them to sound equipment such as headphones, speakers, amplifiers, and tape recorders, or to send out the sound of synthetic musical instruments through the digital interface of music equipment (MIDI).

The role of the sound card？

👍 Digital sound files. Through the control of the sound card and the corresponding driver, the signals from the microphone, tape recorder and other audio sources are collected, compressed and stored in the memory or hard disk of the computer system.

👍The digitized sound file compressed by the laser disc is restored to a high-quality sound signal, which is amplified and released through the speaker.

👍 The digitized sound files are processed to achieve a specific audio effect.

👍 Volume, combine various sound sources to realize the function of reverberator.

👍 Synthesis technology, reading text information through sound card. Such as reading English words and sentences, playing music, etc.

👍  Audio recognition function, allowing the operator to command the computer to work with a password.

👍  Electronic musical instruments. In addition, under the action of the driver, the sound card can output the files stored in the MIDI format to the corresponding electronic musical instruments to emit corresponding sounds. Make the electronic instrument under the command of the sound card.

——————————————————————————————————————The photo is quoted from the comment area of Amazon Digitallife, and the article is quoted by the "Science China" Science Encyclopedia Encyclopedia Entry Writing and Application Work Project Review.