| 摘要 |
FIELD: physics. ^ SUBSTANCE: device (1) for converting a first number (M) of input audio channels to a second larger number (N) of output audio channels has: a decorrelation unit (3) for breaking input audio channels into a set of decorrelated auxiliary channels, at least one mixing unit (4) for combining the decorrelated auxiliary channels into output audio channels and at least one pre-processing unit (2) for pre-processing input audio channels and transmitting the pre-processed input audio channels to the decorrelation unit (3). The pre-processing unit (2) and the mixing unit (4) are preferably controlled based on audio parametres. ^ EFFECT: reduced signal distortion due to time levelling between signal parametres and corresponding parts of the signal. ^ 13 cl, 6 dwg |
