APPARATUS AND METHOD FOR EXTENDING OR COMPRESSING TIME SECTIONS OF AN AUDIO SIGNAL

摘要

An audio signal processor (100) comprising an analysis means (104), a manipulation factor unit (106), and a time-stretching and compression device (108). The analysis means (104) is implemented to determine a first measure of information content (M1) of a first time section of an audio signal and a second measure of information content (M2) of a second time section. The manipulation factor unit (106) is implemented to determine a time manipulation factor (?D1) for the first time section in dependence on the first measure of information content (M1) and the second measure of information content (M2). The time-stretching and compression device (108) is implemented to time-stretch or compress the first time section according to the manipulation factor (?D1) and to treat the second time section differently from the first time section. A corresponding method for adjusting time information content variations of an audio signal (s) is also disclosed. The determination of the first measure of information content and of the second measure of information content may be based on externally provided control information such as meta-data provided along with the audio signal.