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1. (WO2017157427) AN AUDIO SIGNAL PROCESSING APPARATUS AND METHOD FOR PROCESSING AN INPUT AUDIO SIGNAL

Pub. No.:    WO/2017/157427    International Application No.:    PCT/EP2016/055622
Publication Date: Fri Sep 22 01:59:59 CEST 2017 International Filing Date: Thu Mar 17 00:59:59 CET 2016
IPC: G10L 21/038
G10L 21/0364
G10L 19/008
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
GEIGER, Jürgen
GROSCHE, Peter
Inventors: GEIGER, Jürgen
GROSCHE, Peter
Title: AN AUDIO SIGNAL PROCESSING APPARATUS AND METHOD FOR PROCESSING AN INPUT AUDIO SIGNAL
Abstract:
The invention relates to an audio signal processing apparatus (100) and method for processing an input audio signal (101) into an output audio signal (103). The audio signal processing apparatus (100) comprises a decomposer (105) configured to decompose the input audio signal (101) into a direct audio signal (102a) and a diffuse audio signal (102b), a modifier (107) configured to modify the direct audio signal (102a) in order to obtain a modified direct audio signal (102a'), wherein the modifier (107) comprises a bandwidth extender (107a) configured to extend an upper cutoff frequency of the frequency range of the direct audio signal (102a), and a combiner (109) configured to combine the modified direct audio signal (102a') with the diffuse audio signal (102b) in order to obtain the output audio signal (103).