| 摘要 |
PCT No. PCT/FR97/00582 Sec. 371 Date Apr. 27, 1999 Sec. 102(e) Date Apr. 27, 1999 PCT Filed Apr. 2, 1997 PCT Pub. No. WO97/38417 PCT Pub. Date Oct. 16, 1997A coding system delivers a global data stream consisting of primary coded subband data streams from a primary subband coder bank, coding an input signal data stream, and secondary coded subband data streams from a secondary subband coder bank. The coding delay of the primary coder bank is smaller than that of the secondary coder bank. A filter bank receives the input signal data and generates signal streams in a plurality of subbands, which are coded by the respective coder of the primary subband coder bank, forming the primary streams. A bank of decoders receive and decode the respective coded primary subbank streams, which decoded subband signals are subtracted by a bank of subtractors from the corresponding original subband signals, which difference streams are input to the respective coder in a secondary subband coder bank. The secondary coder generates coded secondary subband data streams. A multiplexer interlaces the primary and the secondary coded subband data streams into a single global data stream. |
