multichannel encoder operable to process input signals, signal processor, method for encoding input signals in a multichannel encoder, encoded output data, multichannel decoder for decoding output data generated by a multichannel encoder, and method for decode encoded data in a multichannel decoder

摘要

MULTI-CHANNEL ENCODER FOR PROCESSING INPUT SIGNALS, SIGNAL PROCESSOR, METHOD FOR CODING INPUT SIGNALS, CODED OUTPUT, MULTI-CHANNEL DECODER, MULTI-CHANNEL DECODER, To decode encoded data into a multichannel decoder a method of encoding input signals (CH1 to CH3; 400 to 450) is described in a multichannel encoder (5; 15) to generate corresponding output data including down mix signals (610,620). ) together with complementary parametric data (600). The method includes a first step of downmixing input signals (CH1 to CH3; 400 to 450) to generate the corresponding downmix output signals (610, 620), and a second step of processing input signals (CH1 A CH3; 400 to 450) during downmixing to generate said parametric data (600) complementary to the downmixing output signals (610, 620). Processing of the input signals (CH1 to CH3; 400 to 450) involves including information in the down mix signals (610, 620) that is usable during subsequent decoding of the down mix output signals (610, 620) and parametric data. (600) to determine at least some parameter data and thereby enabling representations of the input signals (CH1 to CH3 400 to 450) to be regenerated subsequently. Encoders for use in encoder (5; 15) for performing essential signal processing operations thereon are also elucidated.