1. Spectral Band Replication compression> SBR Guessing the nontransmitted higher frequency range of a compressed audio file by some helper bits transmiited with the stream and the transmitted base band. SBR allows a restoration not reconstruction of the upper frequency range without lots of bits. It was developed by Coding Technology http://www. codingtechnology. com/, and is useful for medium and high quality coding at low and medium data rates. It is used by Digital Radio Mondiale and MP3 Pro.
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