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Terminology
Terminology Description
A
AAC-LD
Advanced Audio Coding-Low Delay: Low latency advanced audio coding
AC
Alternating Current
AEC
Acoustic Echo Cancellation: Acoustic echo cancellation. A commonly used
signal processing method in teleconferencing. Because the hands-free full-
duplex mode means that the voice signals at both ends of the call are
continuously transmitted, but the terminal transmits in the form of multicast, a
feedback loop is generated at the near end, so that the caller will hear an echo.
The process of solving this problem is called acoustic echo cancellation.
AES
Advanced Encryption Standard: Advanced encryption standard. A block
encryption standard adopted by the US federal government that replaces DES.
The advanced encryption standard is intended to perform an unclassified,
publicly available symmetric encryption algorithm. The cipher block size is fixed
at 128 bits and the key size is 128 bits, 192 bits or 256 bits.
C
CA
Certificate Authority
CIF
Common Intermediate Format
CRC
Cyclic Redundancy Check: A process of detecting errors in data transmission.
The CRC check generates a number by complex calculations based on the
transmitted data. The sending device performs this calculation before sending
the data and then sends the result to the receiving device. After receiving, the
receiving device repeats the same operation. If the operation results of the two
devices are the same, the transmission is considered to be error-free. This
process is called redundancy check because each transmission contains not
only data but also additional (redundant) errors. Check value.
