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91. 发明专利

AT394901T 未知
公开(公告)号：AT394901T
公开(公告)日：2008-05-15
申请号：AT05757240
申请日：2005-06-13
申请人： FRAUNHOFER GES FORSCHUNG
发明人： HERRE JUERGEN , DISCH SASCHA , HILPERT JOHANNES , ERTEL CHRISTIAN , HOELZER ANDREAS , SPENGER CLAUS-CHRISTIAN
IPC分类号： H04S3/00 , G10L19/00
摘要： A multi-channel synthesizer includes a post processor for determining post processed reconstruction parameters or quantities derived from the reconstruction parameter for an actual time portion of the input signal so that the post processed reconstruction parameter or the post processed quantity is different from the corresponding quantized and inversely quantized reconstruction parameter in that the value of the post processed reconstruction parameter or the derived quantity is not bound by the quantization step size. A multi-channel reconstructor uses the post-processed reconstruction parameter for reconstructing the multi-channel output signal. By post processing reconstruction parameters in connection with multi-channel encoding/decoding allows a low data rate on the one hand and a high quality on the other hand, since strong changes in the reconstructed multi-channel output signal because of a large quantization step size for the reconstruction parameter, which is preferable because of low bit rate requirements, are reduced.

92. 发明专利

AU2005241609B2 Watermark incorporation 未知
公开(公告)号：AU2005241609B2
公开(公告)日：2008-01-10
申请号：AU2005241609
申请日：2005-03-11
申请人： FRAUNHOFER GES FORSCHUNG
发明人： KULESSA RALPH , HERRE JUERGEN , NEUBAUER CHRISTIAN , LINZMEIER KARSTEN , DISCH SASCHA , SIEBENHAAR FRANK
IPC分类号： G10L19/00 , H04H20/31
摘要： According to an inventive scheme for introducing a watermark into an information signal, the information signal is at first transferred from a time representation to a spectral/modulation spectral representation). The information signal is then manipulated in the spectral/modulation spectral representation in dependence on the watermark to be introduced to obtain a modified spectral/modulation spectral representation, and subsequently an information signal provided with a watermark is formed based on the modified spectral/modulation spectral representation. An advantage is that, due to the fact that the watermark is embedded and/or derived in the spectral/modulation spectral representation or range, traditional correlation attacks as are used in watermark methods based on a spread-band modulation cannot succeed easily.

93. 发明专利

AU2007264175A1 Audio encoder, audio decoder and audio processor having a dynamically variable harping characteristic 未知
公开(公告)号：AU2007264175A1
公开(公告)日：2008-01-03
申请号：AU2007264175
申请日：2007-05-16
申请人： FRAUNHOFER GES FORSCHUNG
发明人： BAYER STEFAN , WABNIK STEFAN , HERRE JUERGEN , MULTRUS MARKUS , HIRSCHFELD JENS , GRILL BERNHARD , KRAEMER ULRICH
IPC分类号： G10L19/00 , G10L19/20
摘要： An audio encoder, an audio decoder or an audio processor includes a filter (12) for generating a filtered audio signal, the filter having a variable warping characteristic, the characteristic being controllable in response to a time-varying control signal (16), the control signal indicating a small or no warping characteristic or a comparatively high warping characteristic. Furthermore, a controller (18) is connected for providing the time-varying control signal, which depends on the audio signal. The filtered audio signal can be introduced to an encoding processor (22) having different encoding algorithms, one of which is a coding algorithm adapted to a specific signal pattern. Alternatively, the filter is a post-filter receiving a decoded audio signal.

94. 发明专利

HK1103320A1 WATERMARK INCORPORATION 未知
公开(公告)号：HK1103320A1
公开(公告)日：2007-12-14
申请号：HK07107275
申请日：2007-07-06
申请人： FRAUNHOFER GES FORSCHUNG
发明人： HERRE JUERGEN , KULESSA RALPH , DISCH SASCHA , LINZMEIER KARSTEN , NEUBAUER CHRISTIAN , SIEBENHAAR FRANK
IPC分类号： H04H20/31

95. 发明专利

BRPI0511362A 未知
公开(公告)号：BRPI0511362A
公开(公告)日：2007-12-04
申请号：BRPI0511362
申请日：2005-06-13
申请人： FRAUNHOFER GES FORSCHUNG
发明人： HERRE JUERGEN , DISCH SASHA , HILPERT JOHANNES , ERTEL CHRISTIAN , HOELZER ANDREAS , SPENCER CLAUS-CHRISTIAN
IPC分类号： H04S3/00 , G10L19/00
摘要： A multi-channel synthesizer includes a post processor for determining post processed reconstruction parameters or quantities derived from the reconstruction parameter for an actual time portion of the input signal so that the post processed reconstruction parameter or the post processed quantity is different from the corresponding quantized and inversely quantized reconstruction parameter in that the value of the post processed reconstruction parameter or the derived quantity is not bound by the quantization step size. A multi-channel reconstructor uses the post-processed reconstruction parameter for reconstructing the multi-channel output signal. By post processing reconstruction parameters in connection with multi-channel encoding/decoding allows a low data rate on the one hand and a high quality on the other hand, since strong changes in the reconstructed multi-channel output signal because of a large quantization step size for the reconstruction parameter, which is preferable because of low bit rate requirements, are reduced.

96. 发明专利

DE102006017280A1 Ambience signal generating device for loudspeaker, has synthesis signal generator generating synthesis signal, and signal substituter substituting testing signal in transient period with synthesis signal to obtain ambience signal 未知
公开(公告)号：DE102006017280A1
公开(公告)日：2007-10-18
申请号：DE102006017280
申请日：2006-04-12
申请人： FRAUNHOFER GES FORSCHUNG
发明人： HERRE JUERGEN , HELLMUTH OLIVER , GEYERSBERGER STEPHAN , WALTHER ANDREAS , JANSSEN CHRISTIAAN
IPC分类号： H04S5/00 , G10L19/00 , G10L19/008
摘要： The device has a transient detector (11) for detecting a transient period, in which a testing signal has a transient range, and a synthesis signal generator (12) generating a synthesis signal (13), where the synthesis signal has even time distribution as the testing signal in the transient period and the intensity of the synthesis signal deviates from the intensity of a section of the testing signal. A signal substituter (14) substitutes the testing signal in the transient period with the synthesis signal to obtain an ambience signal (10). An independent claim is also included for a method of generating an ambience signal.

97. 发明专利

DK1697930T3 未知
公开(公告)号：DK1697930T3
公开(公告)日：2007-10-08
申请号：DK05715611
申请日：2005-02-28
申请人： FRAUNHOFER GES FORSCHUNG
发明人： HERRE JUERGEN , SCHUG MICHAEL , GROESCHL ALEXANDER
IPC分类号： G10L19/008 , G10L19/03
摘要： An apparatus for processing a multi-channel signal includes a means for determining a similarity between a first one of two channels and a second one of the two channels. Furthermore, a means for performing a prediction filtering of the spectral coefficients is provided, which is formed to perform a prediction filtering with only a single prediction filter for both channels in case of high similarity between the first and the second channel, and to perform a prediction filtering with two separate prediction filters in case of a dissimilarity between the first and the second channel. With this, an introduction of stereo artifacts and a deterioration of the coding gain in stereo coding techniques are avoided.

98. 发明专利

BRPI0509818A 未知
公开(公告)号：BRPI0509818A
公开(公告)日：2007-09-18
申请号：BRPI0509818
申请日：2005-03-22
申请人： FRAUNHOFER GES FORSCHUNG
发明人： DISCH SASCHA , LINZMEIER KARSTEN , HERRE JUERGEN
IPC分类号： G06F17/14 , G10L19/02 , G10L21/0208 , H04N7/30
摘要： Processing of information signals separated according to modulation and carrier components in a more controlled way is made possible by a device for processing an information signal including a unit for converting the information signal to a time/spectral representation by block-wise transforming of the information signal and a unit for converting the information signal from the time/spectral representation to a spectral/modulation spectral representation, wherein the unit for converting is designed such that the spectral/modulation spectral representation depends on both a magnitude component and a phase component of the time/spectral representation of the information signal. A unit then performs a manipulation and/or modification of the information signal in the spectral/modulation spectral representation to obtain a modified spectral/modulation spectral representation. A further unit finally forms a processed information signal representing a processed version of the information signal based on the modified spectral/modulation spectral representation.

99. 发明专利

ES2278348T3 CODIFICACION/DECODIFICACION MULTICANAL COMPATIBLE. 未知
公开(公告)号：ES2278348T3
公开(公告)日：2007-08-01
申请号：ES04787072
申请日：2004-09-30
申请人： FRAUNHOFER GES FORSCHUNG
发明人： HERRE JUERGEN , HILPERT JOHANNES , GEYERSBERGER STEFAN , HOELZER ANDREAS , SPENGER CLAUS
IPC分类号： H04S3/00 , H04S3/02
摘要： Aparato para procesar una señal de audio multicanal, teniendo la señal de audio multicanal al menos tres canales originales, que comprende: un medio (12) para proporcionar un primer canal de mezclado descendente como un canal de mezclado descendente izquierdo y un segundo canal de mezclado descendente como un canal de mezclado descendente derecho, derivándose el primer y segundo canales de mezclado descendentes de los canales originales de manera que los canales de mezclado descendente izquierdo y derecho se forman de manera que el resultado, cuando se reproduce, es una representación estéreo de la señal de audio multicanal; un medio (14) medios para calcular la información lateral de canal para un canal original seleccionado de las señales originales, siendo el medio para calcular operativo para calcular la información lateral de canal de manera que un canal de mezclado descendente o un canal de mezclado descendente combinado que incluye el primer y segundo canal de mezclado descendente, cuando se ponderan utilizando la información lateral de canal, dan como resultando una aproximación del canal original seleccionado; y un medio (18) para generar datos de salida, incluyendo los datos de salida la información lateral de canal.

100. 发明专利

NO20071492L 未知
公开(公告)号：NO20071492L
公开(公告)日：2007-07-19
申请号：NO20071492
申请日：2007-03-21
申请人： FRAUNHOFER GES FORSCHUNG
发明人： HERRE JUERGEN , FALLER CHRISTOF , DISCH SASCHA , ALLAMANCHE ERIC
IPC分类号： G10L19/00 , H04S3/00
摘要： In one embodiment, C input audio channels are encoded to generate E transmitted audio channel(s), where one or more cue codes are generated for two or more of the C input channels, and the C input channels are downmixed to generate the E transmitted channel(s), where C>E≧1. One or more of the C input channels and the E transmitted channel(s) are analyzed to generate a flag indicating whether or not a decoder of the E transmitted channel(s) should perform envelope shaping during decoding of the E transmitted channel(s). In one implementation, envelope shaping adjusts a temporal envelope of a decoded channel generated by the decoder to substantially match a temporal envelope of a corresponding transmitted channel.

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