What is an Audio Compact Disc?

Audio is a technical term, and the term audio has been used to generally describe sound-related equipment and its role in the audio range. All sounds that humans can hear are called audio, and it may include noise and so on. After the sound is recorded, whether it is speaking, singing, or musical instruments can be processed by digital music software, or it can be made into a CD. At this time, all sounds have not changed, because the CD is originally a type of audio file. Audio is just sound stored in the computer. If you have a computer plus a corresponding audio cardthat is, a sound card we often say, we can record all sounds, and the acoustic characteristics of the sound, such as the sound level, can be stored in a computer hard disk file.

China implements the voluntary registration system for works in order to protect the legitimate rights and interests of authors or other copyright holders and users of works, which helps to resolve copyright disputes caused by copyright ownership and provides preliminary evidence for the settlement of copyright disputes. Any registration and detention are preliminary evidence of the right

1. Select the official traditional registration and registration agency designated by the China Copyright Protection Center 2. Select the third-party platform such as industry associations for fast electronic data registration and filing,

Digital processing of audio media

With the development of computer technology, especially the realization of mass storage devices and large-capacity memories on PCs, it becomes possible to digitally process audio media. The core of digital processing is the sampling of audio information. By processing the collected samples, various effects are achieved. This is the basic meaning of digital processing of audio media.

Second, the basic processing of audio media

Basic audio digitization includes the following:

different

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"Digital Audio Interface" is a standard format used to define the digital interface protocol between two digital audio devices. It is divided into three formats: home, professional, and computer:

Audio Home Standard

S / PDIF (Sony / Philips Digital Interface Format), EIAJ CP-340 IEC-958 coaxial or optical cable, is unbalanced. The standard output level is 0.5Vpp (transmitter load 75), and the input and output impedance is 75 (0.7-3MHz bandwidth). Commonly used are fiber. RCA and BNC. We commonly use RCA plugs for coaxial output, but it is a wrong practice to use RCA for coaxial output. The correct method is to use BNC for coaxial output, because the impedance of the BNC head is 75, which is just suitable for S / PDIF format. Standard, but due to historical reasons, RCA is used for coaxial output on general home machines.

Audio Professional Standard

AES / EBU (American Audio Engineering Association / European Broadcasting Union Digital Format), AES3-1992, balanced XLR cable, is a balanced structure. The output voltage is 2.7Vpp (transmitter load 110), and the input and output impedance is 110 (0.1-6MHz bandwidth).

Audio Computer Standard

AT T (American Telephone and Telegraph Company).