Qdesign Music Codec
Based in British Columbia, Qdesign developed a high quality, streaming audio codec. Distributed by Apple as part of their QuickTime media architecture, this codec gives excellent quality at dialup data rates.


Quantised DCT coefficients
DCT coefficients before dequantisation. A variable length coded representation of quantised DCT coefficients is stored as part of the compressed bitstream.


Quantiser scale
A scalefactor coded in the bitstream and used by the decoding process to scale the dequantisation.