LOW-COMPLEXITY AUDIO MATRIX DECODER

摘要

Deriving n audio output signals from m audio input signals, where m and n are positive whole integers and the n audio output signals are derived using an adaptive matrix or matrixing process responsive to one or more control signals, which matrix or matrixing process produces n audio signals in response to m audio signals, and (b) deriving a plurality of time- varying control signals from the m audio input signals, wherein the control signals are derived from the m input audio signals using (i) a processor or process that produces a plurality of directional dominance signals in response to the m audio input signals, at least one directional dominance signal relating to a first directional axis and at least one other directional dominance signal relating to a second directional axis, and (iÊ) a processor or process that produces the control signals in response to the directional dominance signals.