| 摘要 |
A method for producing a multi-channel audio signal from one or more sound object signals is disclosed, where, for each sound object signal a plurality of width signals is produced, the amplitudes of the width signals following a substantially Gaussian distribution. The width signals are processed to produce a plurality of pan signals which are mapped to at least one channel. Each channel in the audio signal is produced by combining the pan signals from each sound object. An apparatus for reproducing such a multi-channel audio signal is also disclosed, comprising: a predetermined listening zone provided within the apparatus; a plurality of first loudspeakers provided spaced around a first arc forward of the listening zone, each of the first loudspeakers facing towards the listening zone and substantially equidistant therefrom, a plurality of second loudspeakers provided spaced around a second arc behind the listening zone, each of the second loudspeakers facing towards the listening zone, an amplifier arranged to produce an amplified signal from each channel in the audio signal, each amplified signal being provided to a corresponding first or second loudspeaker, whereby each sound object is reproduced by one or more loudspeakers such that the SPL at a point spaced from the apparatus is less than the SPL at the listening zone. |
