Enhanced Audio Codec
Encyclopedia
Enhanced Audio Codec is an audio codec
developed and owned by Beijing E-World, that uses a unique perceptual model, spectral band replication
, to compress the audio signal
by utilizing the redundancy as well as the relevancy. The EAC codec supports mono, stereo
and 5.1 surround sound modes for encoding and decoding. EAC is part of the EVD system specification.
Audio codec
All codecs are devices or computer programs capable of coding or decoding a digital data stream or signal.The term audio codec has two meanings depending on the context:...
developed and owned by Beijing E-World, that uses a unique perceptual model, spectral band replication
Spectral band replication
Spectral band replication is a technology to enhance audio or speech codecs, especially at low bit rates and is based on harmonic redundancy in the frequency domain....
, to compress the audio signal
Audio signal
An audio signal is an analog representation of sound, typically as an electrical voltage. Audio signals may be synthesized directly, or may originate at a transducer such as a microphone, musical instrument pickup, phonograph cartridge, or tape head. Loudspeakers or headphones convert an electrical...
by utilizing the redundancy as well as the relevancy. The EAC codec supports mono, stereo
STEREO
STEREO is a solar observation mission. Two nearly identical spacecraft were launched into orbits that cause them to respectively pull farther ahead of and fall gradually behind the Earth...
and 5.1 surround sound modes for encoding and decoding. EAC is part of the EVD system specification.
External references
- http://en.shinco.com/web/news.php?action=viewnews&news_id=12
- http://www.codingtechnologies.com/news/assets/20031118_beijing_eng.pdf
- http://www.davworld.com/eindex.htm