Invention Grant
US08452605B2 Apparatus and method for generating audio subband values and apparatus and method for generating time-domain audio samples
有权
用于产生音频子带值的装置和方法以及用于产生时域音频样本的装置和方法
- Patent Title: Apparatus and method for generating audio subband values and apparatus and method for generating time-domain audio samples
- Patent Title (中): 用于产生音频子带值的装置和方法以及用于产生时域音频样本的装置和方法
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Application No.: US12447126Application Date: 2007-10-23
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Publication No.: US08452605B2Publication Date: 2013-05-28
- Inventor: Markus Schnell , Manfred Lutzky , Markus Lohwasser , Markus Schmidt , Marc Gayer , Michael Mellar , Bernd Edler , Markus Multrus , Gerald Schuller , Ralf Geiger , Bernhard Grill
- Applicant: Markus Schnell , Manfred Lutzky , Markus Lohwasser , Markus Schmidt , Marc Gayer , Michael Mellar , Bernd Edler , Markus Multrus , Gerald Schuller , Ralf Geiger , Bernhard Grill
- Applicant Address: DE Munich
- Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.
- Current Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.
- Current Assignee Address: DE Munich
- Agency: Glenn Patent Group
- Agent Michael A. Glenn
- International Application: PCT/EP2007/009199 WO 20071023
- International Announcement: WO2008/049589 WO 20080502
- Main IPC: G10L19/00
- IPC: G10L19/00 ; G10L19/14
Abstract:
An embodiment of an apparatus for generating audio subband values in audio subband channels has an analysis windower for windowing a frame of time-domain audio input samples being in a time sequence extending from an early sample to a later sample using an analysis window function having a sequence of window coefficients to obtain windowed samples. The analysis window function has a first group of window coefficients and a second group of window coefficients. The first group of window coefficients is used for windowing later time-domain samples and the second group of window coefficients is used for windowing an earlier time-domain samples. The apparatus further has a calculator for calculating the audio subband values using the windowed samples.
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