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131. 发明专利

PL2297978T3 Urządzenie i sposób generowania wyjściowych sygnałów audio z użyciem metadanych na bazie obiektów 未知
公开(公告)号：PL2297978T3
公开(公告)日：2014-08-29
申请号：PL09776987
申请日：2009-07-06
申请人： FRAUNHOFER GES FORSCHUNG
发明人： SCHREINER STEPHAN , FIESEL WOLFGANG , NEUSINGER MATTHIAS , HELLMUTH OLIVER , SPERSCHNEIDER RALPH
IPC分类号： H04S3/00

132. 发明专利

CA2898005A1 TIME DOMAIN LEVEL ADJUSTMENT FOR AUDIO SIGNAL DECODING OR ENCODING 未知
公开(公告)号：CA2898005A1
公开(公告)日：2014-07-24
申请号：CA2898005
申请日：2014-01-07
申请人： FRAUNHOFER GES FORSCHUNG
发明人： SCHREINER STEPHAN , BORSUM ARNE , NEUSINGER MATTHIAS , JANDER MANUEL , LOHWASSER MARKUS , NEUGEBAUER BERNHARD
IPC分类号： G10L19/00
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.

133. 发明专利

PL2394268T3 Urządzenie, sposób i program komputerowy do realizacji upmixu sygnału audio downmixu z użyciem wygładzania wartości faz 未知
公开(公告)号：PL2394268T3
公开(公告)日：2014-06-30
申请号：PL10716780
申请日：2010-04-01
申请人： FRAUNHOFER GES FORSCHUNG
发明人： NEUSINGER MATTHIAS , ROBILLIARD JULIEN , HILPERT JOHANNES
IPC分类号： G10L19/008

134. 发明专利

AU2011240239B2 Audio or video encoder, audio or video decoder and related methods for processing multi-channel audio or video signals using a variable prediction direction 未知
公开(公告)号：AU2011240239B2
公开(公告)日：2014-06-26
申请号：AU2011240239
申请日：2011-02-17
申请人： FRAUNHOFER GES FORSCHUNG
发明人： ROBILLIARD JULIEN , NEUSINGER MATTHIAS , HELMRICH CHRISTIAN , HILPERT JOHANNES , RETTELBACH NIKOLAUS , DISCH SASCHA , EDLER BERND
IPC分类号： G10L19/00 , G10L19/008 , G10L19/06
摘要： An audio or video encoder and an audio or video decoder are based on a combination of two audio or video channels (201, 202) to obtain a first combination signal (204) as a mid signal and a residual signal (205) which can be derived using a predicted side signal derived from the mid signal. The first combination signal and the prediction residual signal are encoded (209) and written (212) into a data stream (213) together with the prediction information (206) derived by an optimizer (207) based on an optimization target (208) and a prediction direction indicator indicating a prediction direction associated with the residual signal. A decoder uses the prediction residual signal, the first combination signal, the prediction direction indicator and the prediction information to derive a decoded first channel signal and a decoded second channel signal. In an encoder example or in a decoder example, a real-to-imaginary transform can be applied for estimating the imaginary part of the spectrum of the first combination signal. For calculating the prediction signal used in the derivation of the prediction residual signal, the real-valued first combination signal is multiplied by a real portion of the complex prediction information and the estimated imaginary part of the first combination signal is multiplied by an imaginary portion of the complex prediction information.

135. 发明专利

ES2452569T3 Aparato, procedimiento y programa de computación para mezclar en forma ascendente una señal de audio con mezcla descendente utilizando una suavización de valor fase 未知
公开(公告)号：ES2452569T3
公开(公告)日：2014-04-02
申请号：ES10716780
申请日：2010-04-01
申请人： FRAUNHOFER GES FORSCHUNG
发明人： NEUSINGER MATTHIAS , ROBILLIARD JULIEN , HILPERT JOHANNES
IPC分类号： G10L19/008
摘要： Un aparato (100; 200) para mezclar en forma ascendente una señal de audio con mezcla descendente(110;210) que describe uno o más canales de audio de mezcla descendente en una señal de audio mezclada enforma ascendente (120;214) que describe una pluralidad de canales de audio mezclada en forma ascendente, elaparato comprende: un mezclador ascendente (130;230) configurado para aplicar parámetros de mezcla ascendente temporalmentevariables (144; 262) para mezclar en forma ascendente la señal de audio con mezcla descendente, para obtener laseñal de audio mezclada en forma ascendente, donde los parámetros de mezcla ascendente temporalmentevariables comprenden valores de fase suavizados temporalmente variables (144a; 270); un determinador de parámetro (140; 250), donde el determinador de parámetro está configurado para obtener uno omás parámetros de mezcla ascendente temporalmente suavizados (αn) para usa por el mezclador ascendente(130;230) teniendo en cuenta una información de entrada de parámetro cuantizada (142; 212), donde el determinador de parámetro (140;250) está configurado para combinar una versión ajustada a escala ((1-α) &alpha ~n-1) de un valor de fase suavizado previo ( α ~n-1) con una versión ajustada a escala (αn) de una información defase de entrada (αn) utilizando un algoritmo de limitación de cambio de fase, para determinar un valor de fasesuavizado actual ( α ~n) teniendo en cuenta el valor de fase suavizado previo y la información de fase de entrada.donde el determinador de parámetro está configurado para obtener un valor de fase suavizado actual α ~ n deacuerdo con las siguiente ecuación:**Fórmula**

136. 发明专利

AU2011238010B2 Audio encoder, audio decoder and related methods for processing multi-channel audio signals using complex prediction 未知
公开(公告)号：AU2011238010B2
公开(公告)日：2014-01-16
申请号：AU2011238010
申请日：2011-03-23
申请人： DOLBY INT AB , FRAUNHOFER GES FORSCHUNG
发明人： PURNHAGEN HEIKO , CARLSSON PONTUS , VILLEMOES LARS , ROBILLARD JULIEN , NEUSINGER MATTHIAS , HELMRICH CHRISTIAN , HILPERT JOHANNES , RETTELBACH NIKOLAUS , DISCH SASCHA , EDLER BERND
IPC分类号： G10L19/00 , G10L19/008 , G10L19/04
摘要： An audio encoder and an audio decoder are based on a combination of two audio channels (201, 202) to obtain a first combination signal (204) as a mid signal and a residual signal (205) which can be derived using a predicted side signal derived from the mid signal. The first combination signal and the prediction residual signal are encoded (209) and written (212) into a data stream (213) together with the prediction information (206) derived by an optimizer (207) based on an optimization target (208). A decoder uses the prediction residual signal, the first combination signal and the prediction information to derive a decoded first channel signal and a decoded second channel signal. In an encoder example or in a decoder example, a real-to-imaginary transform can be applied for estimating the imaginary part of the spectrum of the first combination signal. For calculating the prediction signal used in the derivation of the prediction residual signal, the real-valued first combination signal is multiplied by a real portion of the complex prediction information and the estimated imaginary part of the first combination signal is multiplied by an imaginary portion of the complex prediction information.

137. 发明专利

HK1180823A1 DECODING OF MULTI-CHANNEL AUDIO SIGNALS USING COMPLEX PREDICTION 未知
公开(公告)号：HK1180823A1
公开(公告)日：2013-10-25
申请号：HK13107919
申请日：2013-07-08
申请人： FRAUNHOFER GES FORSCHUNG
发明人： PURNHAGEN HEIKO , CARLSSON PONTUS , VILLEMOES LARS , ROBILLARD JULIEN , NEUSINGER MATTHIAS , HELMRICH CHRISTIAN , HILPERT JOHANNES , RETTELBACH NIKOLAUS , DISCH SASCHA , EDLER BERND
IPC分类号： G10L19/008 , G10L19/04
摘要： An audio encoder and an audio decoder are based on a combination of two audio channels (201, 202) to obtain a first combination signal (204) as a mid signal and a residual signal (205) which can be derived using a predicted side signal derived from the mid signal. The first combination signal and the prediction residual signal are encoded (209) and written (212) into a data stream (213) together with the prediction information (206) derived by an optimizer (207) based on an optimization target (208). A decoder uses the prediction residual signal, the first combination signal and the prediction information to derive a decoded first channel signal and a decoded second channel signal. In an encoder example or in a decoder example, a real-to-imaginary transform can be applied for estimating the imaginary part of the spectrum of the first combination signal. For calculating the prediction signal used in the derivation of the prediction residual signal, the real-valued first combination signal is multiplied by a real portion of the complex prediction information and the estimated imaginary part of the first combination signal is multiplied by an imaginary portion of the complex prediction information.

138. 发明专利

AU2010233863B2 Apparatus, method and computer program for upmixing a downmix audio signal using a phase value smoothing 未知
公开(公告)号：AU2010233863B2
公开(公告)日：2013-09-26
申请号：AU2010233863
申请日：2010-04-01
申请人： FRAUNHOFER GES FORSCHUNG
发明人： NEUSINGER MATTHIAS , ROBILLIARD JULIEN , HILPERT JOHANNES
IPC分类号： G10L19/00
摘要： An apparatus for upmixing a downmix audio signal describing one or more downmix audio channels into an upmixed audio signal describing a plurality of upmixed audio channels comprises an upmixer and a parameter determinator. The upmixer is configured to apply temporally variable upmix parameters to upmix the downmix audio signal in order to obtain the upmixed audio signal, wherein the temporally variable upmix parameters comprise temporally variable smoothened phase values. The parameter determinator is configured to obtain one or more temporally smoothened upmix parameters for usage by the upmixer on the basis of a quantized upmix parameter input information. The parameter determinator is configured to combine a scaled version of a previous smoothened phase value with a scaled version of an input phase information using a phase change limitation algorithm, to determine a current smoothened phase value on the basis of the previous smoothened phase value and the phase input information.

139. 发明专利

AU2010209872B2 Upmixer, method and computer program for upmixing a downmix audio signal 未知
公开(公告)号：AU2010209872B2
公开(公告)日：2013-06-20
申请号：AU2010209872
申请日：2010-01-12
申请人： FRAUNHOFER GES FORSCHUNG
发明人： NEUSINGER MATTHIAS , ROBILLIARD JULIEN , HILPERT JOHANNES
IPC分类号： G10L19/00
摘要： An upmixer for upmixing a downmix audio signal into an upmixed audio signal describing one or more upmixed audio channels comprises a parameter applier configured to apply upmixing parameters to upmix the downmix audio signal in order to obtain the upmixed audio signal. The parameter applier is configured to apply a phase shift to the downmix audio signal to obtain a phase-shifted version of the downmix audio signal, while leaving a decorrelated signal unmodified by the phase shift. The parameter applier is further configured to combine the phase-shifted version of the downmix audio signal with the decorrelated signal to obtain the upmixed audio signal.

140. 发明专利

AU2009270526B2 Apparatus and method for generating audio output signals using object based metadata 未知
公开(公告)号：AU2009270526B2
公开(公告)日：2013-05-23
申请号：AU2009270526
申请日：2009-07-06
申请人： FRAUNHOFER GES FORSCHUNG
发明人： NEUSINGER MATTHIAS , SCHREINER STEPHAN , SPERSCHNEIDER RALPH , HELLMUTH OLIVER , FIESEL WOLFGANG
IPC分类号： H04S3/00
摘要： An apparatus for generating at least one audio output signal representing a superposition of at least two different audio objects comprises a processor for processing an audio input signal to provide an object representation of the audio input signal, where this object representation can be generated by a parametrically guided approximation of original objects using an object downmix signal. An object manipulator individually manipulates objects using audio object based metadata referring to the individual audio objects to obtain manipulated audio objects. The manipulated audio objects are mixed using an object mixer for finally obtaining an audio output signal having one or several channel signals depending on a specific rendering setup.

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