Device and method for manipulating an audio signal having a transient event

摘要

Abstract Apparatus for manipulating an audio signal having a transient event (801), comprising: a signal processor (110) for processing a transient reduced audio signal in which a first 5 time portion (804) comprising the transient event (801) is removed or, for processing an audio signal comprising the transient event (803) to obtain a processed audio signal; a signal inserter (120) for inserting a second time portion (809) into the processed audio signal at a signal location, where the first portion was removed or where the transient event is located in the processed audio signal, wherein the second time portion (809) 10 comprises a transient event (801) not influenced by the processing performed by the signal processor (110) so that a manipulated audio signal is obtained, wherein the signal inserter (120) is configured: for determining (122) a time length of the second time portion (809) to be copied from the audio signal having the transient event, for determining (123) a start time instant of the second time portion or a stop time instant 15 of the second time portion by finding a maximum of a cross correlation calculation, so that a border of the second time portion matches with a corresponding border of the processed audio signal as far as possible, wherein a position in time (803') of the transient event in the manipulated audio signal coincides with the position (803) in time of the transient event in the audio signal or deviates from the position in time of the 20 transient event (803) in the audio signal by a time difference smaller than a pyschoacoustically tolerable degree determined by a pre-masking or post-masking of the transient event. 3488823_1 (GHMatters) P85079.AU.2 audio 101 signal transient 102 with sint signal transient I removr processor processed l2 2---- J 1 2-~-2111audio signal 1 13 (with or without transient event) _ _ _ __signal1 inserter transient -_ _ 140s signal (and neighbor- 141 audio signal with hood) generator unprocessed, "natural" or synthesized transient signal - 130 conditioner