What is the correct sequence for computers to acquire and play digital audio information?

The correct sequence for computers to obtain and play digital audio information is sampling, A/D conversion, compression, storage, decompression, and D/A conversion; among them, analog audio is converted into digital audio, and the computer In music, it’s called sampling, and the main hardware device used in the process is an analog/digital converter.

The operating environment of this article: Windows 7 system, Dell G3 computer.

The correct order is sampling, A/D conversion, compression, storage, decompression, and D/A conversion.

Converting analog audio to digital audio is called sampling in computer music. The main hardware device used in the process is an analog/digital converter (Analog to DigitalConverter, namely ADC). The process of sampling is actually to convert the electrical signals of ordinary analog audio signals into many binary codes 0 and 1 called "bits". These 0s and 1s constitute the digital audio file.

The first function of digital encoding of audio information is to use a certain format to record digital data, and the second is to use a certain algorithm to compress digital data to reduce storage space and improve transmission efficiency.

Compression algorithms include lossy compression and lossless compression; lossy compression means that the data cannot be completely restored after decompression, and some information will be lost. One of the basic indicators of compression encoding is the compression ratio, which is usually less than 1. The more compression, the more information is lost and the greater the distortion after signal restoration. Depending on the application, different compression coding algorithms should be used.

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