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Apparatus and method for decomposing an audio signal using a ratio as a separation characteristic

Vorrichtung und Verfahren zur Dekomposition eines Audiosignals unter Verwendung eines Verhältnisses als eine Eigenschaftscharakteristik
 
: Adami, Alexander; Disch, Sascha; Ghido, Florin; Herre, Jürgen

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Frontpage ()

EP 3324407 A1: 20161117
Englisch
Patent, Elektronische Publikation
Fraunhofer IIS ()

Abstract
An apparatus for decomposing an audio signal into a background component signal and a foreground component signal includes: a block generator for generating a time sequence of blocks of audio signal values; an audio signal analyzer for determining a block characteristic of a current block of the audio signal and for determining an average characteristic for a group of blocks, the group of blocks including at least two blocks; and a separator for separating the current block into a background portion and a foreground portion in response to a ratio of the block characteristic of the current block and the average characteristic of the group of blocks, wherein the background component signal includes the background portion of the current block and the foreground component signal includes the foreground portion of the current block.

: http://publica.fraunhofer.de/dokumente/N-530810.html