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1. 发明公开

EP4325723A2 APPARATUS AND METHOD FOR GENERATING TIME-DOMAIN AUDIO SAMPLES 审中-实审
公开(公告)号：EP4325723A2
公开(公告)日：2024-02-21
申请号：EP23210951.2
申请日：2007-10-23
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Schnell, Markus , Lutzky, Manfred , Lohwasser, Markus , Schmidt, Markus , Gayer, Marc , Mellar, Michael , Edler, Bernd , Multrus, Markus , Schuller, Gerald , Geiger, Ralf , Grill, Bernhard
IPC分类号： H03H17/02
摘要： An apparatus for generating time-domain audio samples or synthesis filterbank (300) comprises a calculator (310) for calculating a frame (330) comprising a sequence of intermediate time-domain samples from audio subband values of block (320). The calculator (310) is coupled to a synthesis windower (360) to which the frame (330) of intermediate time-domain samples is provided. The synthesis windower (360) is adapted to windowing the sequence of intermediate time-domain samples using a synthesis window function (370) and provides a frame (380) of windowed intermediate time-domain samples. The synthesis windower (360) is coupled to an overlap-adder output stage (400) that obtains a block (410) of time-domain samples. The block (410) of the time-domain (output) samples can then for instance be provided to further components for further processing, storing or transforming into audible audio signals.

2. 发明公开

EP4325724A3 APPARATUS AND METHOD FOR GENERATING AUDIO SUBBAND VALUES 审中-实审
公开(公告)号：EP4325724A3
公开(公告)日：2024-04-17
申请号：EP23210959.5
申请日：2007-10-23
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Schnell, Markus , Lutzky, Manfred , Lohwasser, Markus , Schmidt, Markus , Gayer, Marc , Mellar, Michael , Edler, Bernd , Multrus, Markus , Schuller, Gerald , Geiger, Ralf , Grill, Bernhard
IPC分类号： G10L19/02 , G10L19/022 , G10L25/45 , H03H17/02 , G10L21/038
CPC分类号： G10L19/022 , H03H17/0266 , G10L21/038 , G10L25/45 , G10L19/0204
摘要： An embodiment of an apparatus (100) for generating audio subband values in audio subband channels comprises an analysis windower (110) for windowing a frame (120) 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 (190) comprising a sequence of window coefficients to obtain windowed samples. The analysis window function (190) comprises a first group (200) of window coefficients and a second group (210) of window coefficients. The first group (200) of window coefficients is used for windowing later time-domain samples and the second group (210) of window coefficients is used for windowing an earlier time-domain samples. The apparatus (100) further comprises a calculator (170) for calculating the audio subband values using the windowed samples.

3. 发明公开

EP4300825A3 APPARATUS AND METHOD FOR GENERATING TIME-DOMAIN AUDIO SAMPLES 审中-实审
公开(公告)号：EP4300825A3
公开(公告)日：2024-03-20
申请号：EP23210978.5
申请日：2007-10-23
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Schnell, Markus , Lutzky, Manfred , Lohwasser, Markus , Schmidt, Markus , Gayer, Marc , Mellar, Michael , Edler, Bernd , Multrus, Markus , Schuller, Gerald , Geiger, Ralf , Grill, Bernhard
IPC分类号： G10L19/02 , G10L19/022 , G10L25/45 , H03H17/02 , G10L21/038
摘要： An embodiment of an apparatus (100) for generating audio subband values in audio subband channels comprises an analysis windower (110) for windowing a frame (120) 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 (190) comprising a sequence of window coefficients to obtain windowed samples. The analysis window function (190) comprises a first group (200) of window coefficients and a second group (210) of window coefficients. The first group (200) of window coefficients is used for windowing later time-domain samples and the second group (210) of window coefficients is used for windowing an earlier time-domain samples. The apparatus (100) further comprises a calculator (170) for calculating the audio subband values using the windowed samples.

4. 发明公开

EP4300824A3 APPARATUS AND METHOD FOR GENERATING TIME-DOMAIN AUDIO SAMPLES 审中-实审
公开(公告)号：EP4300824A3
公开(公告)日：2024-03-20
申请号：EP23210953.8
申请日：2007-10-23
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Schnell, Markus , Lutzky, Manfred , Lohwasser, Markus , Schmidt, Markus , Gayer, Marc , Mellar, Michael , Edler, Bernd , Multrus, Markus , Schuller, Gerald , Geiger, Ralf , Grill, Bernhard
IPC分类号： G10L19/02 , G10L19/022 , G10L25/45 , H03H17/02 , G10L21/038
摘要： An apparatus for generating time-domain audio samples or synthesis filterbank (300) comprises a calculator (310) for calculating a frame (330) comprising a sequence of intermediate time-domain samples from audio subband values of block (320). The calculator (310) is coupled to a synthesis windower (360) to which the frame (330) of intermediate time-domain samples is provided. The synthesis windower (360) is adapted to windowing the sequence of intermediate time-domain samples using a synthesis window function (370) and provides a frame (380) of windowed intermediate time-domain samples. The synthesis windower (360) is coupled to an overlap-adder output stage (400) that obtains a block (410) of time-domain samples. The block (410) of the time-domain (output) samples can then for instance be provided to further components for further processing, storing or transforming into audible audio signals.

5. 发明公开

EP4325724A2 APPARATUS AND METHOD FOR GENERATING AUDIO SUBBAND VALUES 审中-实审
公开(公告)号：EP4325724A2
公开(公告)日：2024-02-21
申请号：EP23210959.5
申请日：2007-10-23
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Schnell, Markus , Lutzky, Manfred , Lohwasser, Markus , Schmidt, Markus , Gayer, Marc , Mellar, Michael , Edler, Bernd , Multrus, Markus , Schuller, Gerald , Geiger, Ralf , Grill, Bernhard
IPC分类号： H03H17/02
摘要： An embodiment of an apparatus (100) for generating audio subband values in audio subband channels comprises an analysis windower (110) for windowing a frame (120) 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 (190) comprising a sequence of window coefficients to obtain windowed samples. The analysis window function (190) comprises a first group (200) of window coefficients and a second group (210) of window coefficients. The first group (200) of window coefficients is used for windowing later time-domain samples and the second group (210) of window coefficients is used for windowing an earlier time-domain samples. The apparatus (100) further comprises a calculator (170) for calculating the audio subband values using the windowed samples.

6. 发明公开

EP2757558A1 Time domain level adjustment for audio signal decoding or encoding 审中-公开
标题翻译： Niveaueinstellung der Zeitbereichsebene zur Audiosignaldekodierung oder -kodierung
公开(公告)号：EP2757558A1
公开(公告)日：2014-07-23
申请号：EP13151910.0
申请日：2013-01-18
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Schreiner, Stephan , Borsum, Arne , Neusinger, Matthias , Jander, Manuel , Lohwasser, Markus , Neugebauer, Bernhard
IPC分类号： G10L19/00
CPC分类号： G10L19/005 , G10L19/0017 , G10L19/02 , G10L21/0224 , G10L21/0232 , G10L21/0332 , G10L21/034
摘要： An audio signal decoder (100) for providing a decoded audio signal representation on the basis of an encoded audio signal representation comprises a decoder preprocessing stage (110) for obtaining a plurality of frequency band signals from the encoded audio signal representation, a clipping estimator (120), a level shifter (130), a frequency-to-time-domain converter (140), and a level shift compensator (150). The clipping estimator (120) analyzes the encoded audio signal representation and/or side information relative to a gain of the frequency band signals in order to determine a current level shift factor. The level shifter (130) shifts levels of the frequency band signals according to the level shift factor. The frequency-to-time-domain converter (140) converts the level shifted frequency band signals into a time-domain representation. The level shift compensator (150) acts on the time-domain representation for at least partly compensating a corresponding level shift and for obtaining a substantially compensated time-domain representation.
摘要翻译：用于基于经编码的音频信号表示提供解码的音频信号表示的音频信号解码器（100）包括用于从编码的音频信号表示获得多个频带信号的解码器预处理级（110），剪辑估计器 120），电平移位器（130），频域 - 时域转换器（140）和电平移位补偿器（150）。剪辑估计器（120）相对于频带信号的增益分析编码的音频信号表示和/或侧信息，以便确定当前的电平移位因子。电平移位器（130）根据电平移位因子移位频带信号的电平。频域 - 时域转换器（140）将电平移位的频带信号转换成时域表示。电平移位补偿器（150）作用于时域表示，用于至少部分地补偿相应的电平移位并用于获得实质上经补偿的时域表示。

7. 发明授权

EP2352147B1 An apparatus and a method for encoding an audio signal 有权
标题翻译：装置和方法，用于编码的声音信号，
公开(公告)号：EP2352147B1
公开(公告)日：2013-09-04
申请号：EP11162255.1
申请日：2009-06-23
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Neuendorf, Max , Krämer, Ulrich , Grill, Bernhard , Multrus, Markus , Popp, Harald , Rettelbach, Nikolaus , Nagel, Frederik , Lohwasser, Markus , Gayer, Marc , Jander, Manuel , Bacigalupo, Virgilio
IPC分类号： G10L19/20 , G10L21/038 , G10L21/02 , G10L19/008
CPC分类号： G10L21/038 , G10L19/008 , G10L19/0212 , G10L19/022 , G10L19/20 , G10L21/04

8. 发明公开

EP2109098A2 Apparatus and method for generating audio subband values and apparatus and method for generating time-domain audio samples 有权
标题翻译：装置和方法，用于产生音频子带值和的装置和方法用于产生时域音频采样
公开(公告)号：EP2109098A2
公开(公告)日：2009-10-14
申请号：EP09010010.8
申请日：2007-10-23
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Schnell, Markus , Lutzky, Manfred , Lohwasser, Markus , Schmidt, Markus , Gayer, Marc , Mellar, Michael , Edler, Bernd , Multrus, Markus , Schuller, Gerald , Geiger, Ralf , Grill, Bernhard
IPC分类号： G10L19/02 , H03H17/02
摘要： An embodiment of an apparatus (100) for generating audio subband values in audio subband channels comprises an analysis windower (110) for windowing a frame (120) 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 (190) comprising a sequence of window coefficients to obtain windowed samples. The analysis window function (190) comprises a first group (200) of window coefficients and a second group (210) of window coefficients. The first group (200) of window coefficients is used for windowing later time-domain samples and the second group (210) of window coefficients is used for windowing an earlier time-domain samples. The apparatus (100) further comprises a calculator (170) for calculating the audio subband values using the windowed samples.

9. 发明公开

EP4325723A3 APPARATUS AND METHOD FOR GENERATING TIME-DOMAIN AUDIO SAMPLES 审中-实审
公开(公告)号：EP4325723A3
公开(公告)日：2024-04-17
申请号：EP23210951.2
申请日：2007-10-23
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Schnell, Markus , Lutzky, Manfred , Lohwasser, Markus , Schmidt, Markus , Gayer, Marc , Mellar, Michael , Edler, Bernd , Multrus, Markus , Schuller, Gerald , Geiger, Ralf , Grill, Bernhard
IPC分类号： G10L19/02 , G10L19/022 , G10L25/45 , H03H17/02 , G10L21/038
CPC分类号： G10L19/022 , H03H17/0266 , G10L21/038 , G10L25/45 , G10L19/0204
摘要： An apparatus for generating time-domain audio samples or synthesis filterbank (300) comprises a calculator (310) for calculating a frame (330) comprising a sequence of intermediate time-domain samples from audio subband values of block (320). The calculator (310) is coupled to a synthesis windower (360) to which the frame (330) of intermediate time-domain samples is provided. The synthesis windower (360) is adapted to windowing the sequence of intermediate time-domain samples using a synthesis window function (370) and provides a frame (380) of windowed intermediate time-domain samples. The synthesis windower (360) is coupled to an overlap-adder output stage (400) that obtains a block (410) of time-domain samples. The block (410) of the time-domain (output) samples can then for instance be provided to further components for further processing, storing or transforming into audible audio signals.

10. 发明公开

EP3848928A1 APPARATUS AND METHOD FOR GENERATING COMPLEX-VALUED AUDIO SUBBAND VALUES 有权转让
公开(公告)号：EP3848928A1
公开(公告)日：2021-07-14
申请号：EP21160250.3
申请日：2007-10-23
申请人： FRAUNHOFER-GESELLSCHAFT zur Förderung der angewandten Forschung e.V.
发明人： Schnell, Markus , Lutzky, Manfred , Lohwasser, Markus , Schmidt, Markus , Gayer, Marc , Mellar, Michael , Edler, Bernd , Multrus, Markus , Schuller, Gerald , Geiger, Ralf , Grill, Bernhard
IPC分类号： G10L19/02 , G10L19/022 , G10L25/45 , H03H17/02 , G10L21/038
摘要： An embodiment of an apparatus (100) for generating audio subband values in audio subband channels comprises an analysis windower (110) for windowing a frame (120) 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 (190) comprising a sequence of window coefficients to obtain windowed samples. The analysis window function (190) comprises a first group (200) of window coefficients and a second group (210) of window coefficients. The first group (200) of window coefficients is used for windowing later time-domain samples and the second group (210) of window coefficients is used for windowing an earlier time-domain samples. The apparatus (100) further comprises a calculator (170) for calculating the audio subband values using the windowed samples.

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