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61. 发明专利

NO20082176A 未知
公开(公告)号：NO20082176A
公开(公告)日：2008-05-09
申请号：NO20082176
申请日：2008-05-09
申请人： KONINKL PHILIPS ELECTRONICS NV
发明人： HERRE JUERGEN , NEUSINGER MATTHIAS , DISCH SASCHA , BREEBART JEROEN , HOTHO GERARD
IPC分类号： G10L19/00 , H04S3/00
CPC分类号： G10L19/008 , H04S3/008

62. 发明专利

NO20082176L 未知
公开(公告)号：NO20082176L
公开(公告)日：2008-05-09
申请号：NO20082176
申请日：2008-05-09
申请人： KONINKL PHILIPS ELECTRONICS NV
发明人： HERRE JUERGEN , NEUSINGER MATTHIAS , DISCH SASCHA , BREEBART JEROEN , HOTHO GERARD
IPC分类号： G10L19/00 , H04S3/00
摘要： A selected channel of a multi-channel signal which is represented by frames composed from sampling values having a high time resolution can be encoded with higher quality when a wave form parameter representation representing a wave form of an intermediate resolution representation of the selected channel is derived, the wave form parameter representation including a sequence of intermediate wave form parameters having a time resolution lower than the high time resolution of the sampling values and higher than a time resolution defined by a frame repetition rate. The wave form parameter representation with the intermediate resolution can be used to shape a reconstructed channel to retrieve a channel having a signal envelope close to that one of the selected original channel. The time scale on which the shaping is performed is shorter than the time scale of a framewise processing, thus enhancing the quality of the reconstructed channel. On the other hand, the shaping time scale is larger than the time scale of the sampling values, significantly reducing the amount of data needed by the wave form parameter representation.

63. 发明专利

CA2792449C DEVICE AND METHOD FOR IMPROVED MAGNITUDE RESPONSE AND TEMPORAL ALIGNMENT IN A PHASE VOCODER BASED BANDWIDTH EXTENSION METHOD FOR AUDIO SIGNALS 未知
公开(公告)号：CA2792449C
公开(公告)日：2017-12-05
申请号：CA2792449
申请日：2011-03-04
申请人： DOLBY INT AB , FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E V
发明人： DISCH SASCHA , NAGEL FREDERIK , WILDE STEPHAN , VILLEMOES LARS , EKSTRAND PER
IPC分类号： G10L19/00 , G10L19/022 , G10L21/038
摘要： An apparatus for generating a bandwidth extended audio signal from an input signal, comprises a patch generator for generating one or more patch signals from the input signal, wherein the patch generator is configured for performing a time stretching (1800, 1808) of subband signals from an analysis filterbank, and wherein the patch generator further comprises a phase adjuster (1806) for adjusting phases of the subband signals using a filterbank-channel dependent phase correction.

64. 发明专利

CA2804907C AUDIO ENCODER, AUDIO DECODER AND RELATED METHODS FOR PROCESSING MULTI-CHANNEL AUDIO SIGNALS USING COMPLEX PREDICTION 未知
公开(公告)号：CA2804907C
公开(公告)日：2016-05-31
申请号：CA2804907
申请日：2011-03-23
申请人： DOLBY INT AB , FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E V
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.

65. 发明专利

CA2792450C APPARATUS AND METHOD FOR PROCESSING AN AUDIO SIGNAL USING PATCH BORDER ALIGNMENT 未知
公开(公告)号：CA2792450C
公开(公告)日：2016-05-31
申请号：CA2792450
申请日：2011-03-04
申请人： DOLBY INT AB , FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E V
发明人： VILLEMOES LARS , EKSTRAND PER , DISCH SASCHA , NAGEL FREDERIK , WILDE STEPHAN
IPC分类号： G10L19/02 , G10L19/022 , G10L21/038 , G10L21/04
摘要： Apparatus for processing an audio signal to generate a bandwidth extended signal having a high frequency part and a low frequency part using parametric data for the high frequency part, the parametric data relating to frequency bands of the high frequency part comprises a patch border calculator (2302) for calculating a patch border such that the patch border coincides with a frequency band border of the frequency bands. The apparatus further comprises a patcher (2312) for generating a patched signal using the audio signal (2300) and the patch border.

66. 发明专利

ES2461172T3 Aparato y procedimiento para generar una señal de audio de alta frecuencia usando sobremuestreo adaptativo 未知
公开(公告)号：ES2461172T3
公开(公告)日：2014-05-19
申请号：ES10730733
申请日：2010-05-25
申请人： DOLBY INT AB , FRAUNHOFER GES ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E V
发明人： VILLEMOES LARS , EKSTRAND PER , DISCH SASCHA , NAGEL FREDERIK , WILDE STEFAN
IPC分类号： G10L21/038 , G10L19/025
摘要： Un aparato para generar una señal de audio de alta frecuencia (18), que comprende: un analizador (12) para analizar una señal de entrada a fin de determinar una información de componente transitorio, en el cual una primera porción de la señal de entrada tiene asociada una información de componente transitorio y la segunda porción posterior de la señal de entrada no tiene una información de componente transitorio; un conversor espectral (14) para convertir la señal de entrada en una representación espectral de entrada (11); un procesador espectral (13) para procesar la representación espectral de entrada para generar una representación espectral procesada (15) que comprende valores de frecuencias más altas que la representación espectral de entrada; y un conversor de tiempo (17) para convertir la representación espectral procesada en una representación de tiempo, caracterizado por el hecho de que el conversor espectral (14) o el conversor de tiempo (17) pueden ser controlados para llevar a cabo un sobremuestreo en el dominio de la frecuencia para la primera porción de la señal de entrada que tiene asociada la información de componente transitorio y para no llevar a cabo el sobremuestreo en el dominio de la frecuencia para la segunda porción de la señal de entrada o para llevar a cabo un sobremuestreo en el dominio de la frecuencia con un factor de sobremuestreo más pequeño en comparación con la primera porción de la señal de entrada, y el procesador espectral (13) está configurado para calcular un valor para una frecuencia mayor mediante la combinación de dos valores de frecuencia adyacentes de la representación espectral de entrada.

67. 发明专利

ES2458354T3 Decodificador de señales de audio, codificador de señales de audio, métodos y programa de ordenador que utiliza tasa de muestreo dependiente de la codificación del contorno de distorsión en el tiempo 未知
公开(公告)号：ES2458354T3
公开(公告)日：2014-05-05
申请号：ES11707665
申请日：2011-03-09
申请人： FRAUNHOFER GES ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E V , DOLBY INT AB
发明人： BAYER STEFAN , BÄCKSTRÖM TOM , GEIGER RALF , EDLER BERND , DISCH SASCHA , VILLEMOES LARS
IPC分类号： G10L19/02 , G10L19/022 , G10L25/90
摘要： Un decodificador de señal de audio (200;350) que provee una representación de señal de audio decodificada (212) teniendo en cuenta una representación de señal de audio codificada (112, 210) que comprende información de frecuencia de muestreo (218), información de distorsión en el tiempo codificada (216, índice(i) dt)) y una representación de espectro codificada (214, datos_espectrales_ar), el decodificador de señal de audio comprende: Un calculador de distorsión en el tiempo (230, 604) configurado para mapear la información de distorsión en el tiempo codificada (216, índice(i) dt)) en una información de distorsión en el tiempo decodificada (232, tbl (índice(i)_valor_ distorsión), Prel). Donde el calculador de distorsión en el tiempo se configura para adaptar una regla de mapeo para mapear palabras codificadas (índice, índice(i) dt) de la información de distorsión en el tiempo codificada (216) en valores de distorsión en el tiempo decodificados (tbl (índice_dt)_valor_ distorsión), Prel) que describen la información de distorsión en el tiempo decodificada (232) dependiendo de la información de frecuencia de muestreo (218); y Un decodificador de distorsión (240) configurado para proveer una representación de señal de audio decodificada (212) teniendo en cuenta la representación de espectro codificada (214, datos()- espectrales_ar) y dependiendo de la información de distorsión en el tiempo decodificada (232).

68. 发明专利

HK1174733A1 APPARATUS AND METHOD FOR GENERATING HIGH FREQUENCY AUDIO SIGNAL USING ADAPTIVE OVERSAMPLING 未知
公开(公告)号：HK1174733A1
公开(公告)日：2013-06-14
申请号：HK13101868
申请日：2013-02-14
申请人： DOLBY INT AB
发明人： VILLEMOES LARS , EKSTRAND PER , DISCH SASCHA , NAGEL FREDERIK , WILDE STEFAN
IPC分类号： G10L19/025 , G10L21/038
摘要： An apparatus for generating a high frequency audio signal that includes an analyzer for analyzing an input signal to determine a transient information adaptively. Additionally a spectral converter is provided for converting the input signal into an input spectral representation. A spectral processor processes the input spectral representation to generate a processed spectral representation including values for higher frequencies than the input spectral representation. A time converter is configured for converting the processed spectral representation to a time representation, wherein the spectral converter or the time converter are controllable to perform a frequency domain oversampling for the first portion of the input signal having the transient information associated and to not perform the frequency domain oversampling for the second portion of the input signal not having the associated transient information.

69. 发明专利

AU2011238010A1 Audio encoder, audio decoder and related methods for processing multi-channel audio signals using complex prediction 未知
公开(公告)号：AU2011238010A1
公开(公告)日：2012-11-08
申请号：AU2011238010
申请日：2011-03-23
申请人： DOLBY INT AB , FRAUNHOFER GES DER ANGEWANDTEN FORSCHUNG E V
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.

70. 发明专利

MY160467A AUDIO ENCODER, AUDIO DECODER AND RELATED METHODS FOR PROCESSING MULTI-CHANNEL AUDIO SIGNALS USING COMPLEX PREDICTION 未知
公开(公告)号：MY160467A
公开(公告)日：2017-03-15
申请号：MYPI2012004489
申请日：2011-03-23
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E V , DOLBY INT AB
发明人： PURNHAGEN HEIKO , EDLER BERND , CARLSSON PONTUS , VILLEMOES LARS , ROBILLARD JULIEN , NEUSINGER MATTHIAS , HELMRICH CHRISTIAN , HILPERT JOHANNES , RETTELBACH NIKOLAUS , DISCH SASCHA
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 (HE COMPLEX PREDICTION INFORMATION.

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