Audio system and method therefor

摘要

An audio system comprises a receiver which receives an input audio signal. A decomposer (103) decomposes the audio signal into at least a transient component signal and a non-transient component signal. An output circuit (105, 107, 109) then generates a first output audio signal in response to a weighted combination of the transient component signal and the non-transient component signal. In the combination the weighting of the transient component signal is different than the weighting of the non-transient component signal. A new signal with different emphasis of specific sound characteristics can be achieved. The approach may be particularly suited to generation of new spatial audio channels from an existing spatial audio channel, such as in particular the generation of an elevated channel from audio signals of a lower channel.

主权项

1. An audio system comprising:
a receiver for receiving an input audio signal; a decomposer for at least partially decomposing the input audio signal into at least a transient component signal and a non-transient component signal; and a first circuit for generating a first output audio signal in response to a weighted combination of the transient component signal and the non-transient component signal, wherein a weighting of the transient component signal is different than a weighting of the non transient component signal, said audio system characterized by the input audio signal being a signal of a first spatial audio channel, and the first output signal being a signal of a second spatial audio channel associated with a nominal position that is different than the nominal position of the first spatial channel, wherein the nominal position is a position from which a spatial audio channel is rendered.