Howtosignalprocessing
There are two slightly different versions: μ-law, which is used primarily in North America and Japan, and A-law, which is in use in most other countries outside North America.
- What is ulaw encoding?
- What is a-law and mu-law?
- What is mu-law in digital communication?
- What is perceptually based compression for sound?
What is ulaw encoding?
U-law, μ-law or mu-law is a standard signal compression in digital telecommunication. It is one of two G. 711 standard versions. This companding algorithm is used in telecommunication in North America and Japan to optimize the dynamic range of an analog audio signal before its digitalization.
What is a-law and mu-law?
"Mu-law (also written µ-Law) is the encoding scheme used in North America and Japan for voice traffic. A-Law (or a-Law) is used in Europe and throughout the rest of the world. The two schemes are very similar. Both break the total dynamic range into eight positive and eight negative segments.
What is mu-law in digital communication?
The μ-law algorithm (sometimes written mu-law, often approximated as u-law) is a companding algorithm, primarily used in 8-bit PCM digital telecommunication systems in North America and Japan. It is one of two versions of the G. 711 standard from ITU-T, the other version being the similar A-law.
What is perceptually based compression for sound?
Perceptual audio coding is a compression technology for audio signals that is based on imperfections of the human ear. Perceptual encoding is a lossy compression technique i.e. the decoded bitstream is not an exact copy of the original digital audio bitstream before compression.
