Patent ID: 8577482

Claim:
A device for generating an ambience signal suitable for being emitted via loudspeakers for which there is no suitable loudspeaker signal, comprising: a transient detector for detecting a transient period in which an examination signal comprises a transient region; a synthesis signal generator for generating a synthesis signal for the transient period, the synthesis signal generator being implemented to generate a synthesis signal which comprises a flatter temporal course than the examination signal in the transient period and the intensity of which deviates from an intensity of a preceding or subsequent portion of the examination signal by less than a predetermined threshold; and a signal substituter for substituting the examination signal in the transient period by the synthesis signal to obtain the ambience signal, wherein the transient detector is implemented to calculate high-frequency contents for a block of the examination signal; wherein the transient detector is implemented to compare the weighted high frequency contents to a floating average value over a plurality of preceding or subsequent blocks without any transients, and wherein the transient detector is implemented to detect a transient for a block when the high frequency contents of a current block exceeds the floating average value by more than a threshold.