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51. 发明申请

WO0143503A3 METHOD AND DEVICE FOR PROCESSING A STEREO AUDIO SIGNAL 审中-公开
标题翻译：方法和装置处理的立体声音频信号
公开(公告)号：WO0143503A3
公开(公告)日：2002-05-10
申请号：PCT/EP0012352
申请日：2000-12-07
申请人： FRAUNHOFER GES FORSCHUNG , TEICHMANN BODO , KUNZ OLIVER , HERRE JUERGEN , PEICHL KLAUS , BEER MICHAEL
发明人： TEICHMANN BODO , KUNZ OLIVER , HERRE JUERGEN , PEICHL KLAUS , BEER MICHAEL
IPC分类号： H04H20/88 , G10L19/008 , H03M7/30 , H04S1/00
CPC分类号： H04S1/00 , G10L19/008
摘要： The invention relates to a device for processing a stereo audio signal comprising a first channel (L) and a second channel (R). The stereo signal is analysed (12) for obtaining a measure for a bit quantity, whereby said quantity is required by a coder for coding the stereo audio signal using a coding algorithm. The first and the second channel are subsequently modified (14) when the measure for the bit quantity is greater than a predetermined value. Modification is carried out in such a way that the energy of a sum signal of the first and second modified channel (L', R') bears a predetermined ratio in relation to the energy of a sum signal of the first and second channel and that a difference signal of the first and second modified channel is muffled in relation to the difference signal of the first and second channel. The side channel is muffled, especially for audio coders that require a constant output bit rate, when the coding of stereo audio signals cannot observe the output bit rate of the coder. Stereo channel separation is thus abandoned in favour of an increased audio bandwidth or a reduction of quantisation interference.
摘要翻译：在一种用于处理具有第一信道（L）和第二信道（R）立体声信号的装置，该立体声信号进行分析（12），以获得用于比特由编码器到所需的量的量度使用的编码算法进行编码的立体声音频信号。然后，第一和第二信道将被修改（14），当度量是大于超过预定值的位的数量，其中所述修饰是这样vonstatten从第一和第二修改的信道求和信号的能量（L' ，R“）处于预定的关系从所述第一和第二信道和信号的能量，而且差分信号从所述第一和第二修改的信道至约来自第一和第二信道的差信号被衰减。特别是对于需要侧信道的一个恒定的输出比特率在立体声音频信号的情况下的音频编码器，该编码不能保持编码器的输出位速率，烟雾存储器O，有利于增加音频带宽和减少量化噪声的从而立体声声道分离被放弃。

52. 发明申请

WO9910886A3 METHOD AND DEVICE FOR DETECTING A TRANSIENT IN A DISCRETE-TIME AUDIOSIGNAL 审中-公开
标题翻译：方法和装置用于记录攻击在时间离散音频信号
公开(公告)号：WO9910886A3
公开(公告)日：1999-06-10
申请号：PCT/EP9803603
申请日：1998-06-15
申请人： FRAUNHOFER GES FORSCHUNG , HILPERT JOHANNES , HERRE JUERGEN , GRILL BERNHARD , BUCHTA RAINER , BRANDENBURG KARLHEINZ , GERHAEUSER HEINZ
发明人： HILPERT JOHANNES , HERRE JUERGEN , GRILL BERNHARD , BUCHTA RAINER , BRANDENBURG KARLHEINZ , GERHAEUSER HEINZ
IPC分类号： H04B1/66
CPC分类号： H04B1/665
摘要： The invention relates to a method for detecting a transient in a discrete-time audiosignal (x(k)) which is carried out entirely in the time domain. Said method comprises a step in which the discrete-time audiosignal is segmented so as generate consecutive segments of identical length with unfiltered discrete-time audiosignals (xs(T), xs(T-1), xs(T-2), ...), after which the discrete-time audiosignal (xs(T)) in a current segment is filtered. Thereafter there are two options: either the energy (Ef(T)) of the filtered discrete-time audiosignal (Ys(T)) in the current segment can be compared with the energy (Ef(T-1)) of the filtered discrete-time audiosignal (Ys(T-1)) in a preceding segment, or a current relationship can be generated between the energy (Ef(T)) of the filtered discrete-time audiosignal (Ys(T)) in the current segment and the energy (Eu(T)) of the unfiltered discrete-time audiosignal (Xs(T)) in the current segment and said current relationship compared with a corresponding preceding relationship. On the basis of the one comparison and/or the other comparison it is determined whether a transient is present in the discrete-time audiosignal.
摘要翻译：在离散时间检测音频信号中的止挡（X（k））的一种方法，在时域中完全进行，并且包括分割所述离散时间的音频信号以与未滤波的离散时间的音频信号（XS（T），XS相同长度的连续片段的步骤（T 生产1），XS（T-2）...）。然后在当前段离散时间的音频信号（XS（T））进行过滤。现在，无论是在与能量当前段的能量滤波的离散时间的音频信号的（EF（T））（YS（T））（EF（T-1））在经滤波的离散时间的音频信号（YS（T-1））的先前片段进行比较时，或者它可以是在当前段中的能量滤波的离散时间的音频信号的（EF（T））（YS（T））和能量未滤波的离散时间的音频信号的（EU（T））（XS（之间的电流关系 T））形成在当前段和该电流关系与前面的对应关系进行比较。上的比较和/或其它比较的基础上它检测到停止是否存在于离散时间的音频信号。

53. 发明专利

CA3043964C APPARATUS AND METHOD FOR DECOMPOSING AN AUDIO SIGNAL USING A RATIO AS A SEPARATION CHARACTERISTIC 未知
公开(公告)号：CA3043964C
公开(公告)日：2022-06-28
申请号：CA3043964
申请日：2017-11-16
申请人： FRAUNHOFER GES FORSCHUNG
发明人： ADAMI ALEXANDER , HERRE JUERGEN , DISCH SASCHA , GHIDO FLORIN
IPC分类号： G10L21/028 , G10L19/008
摘要： An apparatus for decomposing an audio signal (100) into a background component signal (140) and a foreground component signal (150), comprises: a block generator (110) for generating a time sequence of blocks of audio signal values; an audio signal analyzer (120) for determining a block characteristic of a current block of the audio signal and for determining an average characteristic for a group of blocks, the group of blocks comprising at least two blocks; and a separator (130) for separating the current block into a background portion and a foreground portion in response to a ratio of the block characteristic of the current block and the average characteristic of the group of blocks, wherein the background component signal (140) comprises the background portion of the current block and the foreground component signal (150) comprises the foreground portion of the current block.

54. 发明专利

CA3042580C APPARATUS AND METHOD FOR DOWNMIXING OR UPMIXING A MULTICHANNEL SIGNAL USING PHASE COMPENSATION 未知
公开(公告)号：CA3042580C
公开(公告)日：2022-05-03
申请号：CA3042580
申请日：2017-10-30
申请人： FRAUNHOFER GES FORSCHUNG
发明人： BUETHE JAN , FUCHS GUILLAUME , JAEGERS WOLFGANG , REUTELHUBER FRANZ , HERRE JUERGEN , FOTOPOULOU ELENI , MULTRUS MARKUS , KORSE SRIKANTH
IPC分类号： G10L19/008 , H04S3/00
摘要： An apparatus for downmixing a multi-channel signal (100) comprising at least two channels (101, 102), comprises: a downmixer (120) for calculating (34) a downmix signal (122) from the multi-channel signal (100), wherein the downmixer is configured to calculate (34) the downmix using an absolute phase compensation, so that a channel having a lower energy among the at least two channels is only rotated or is rotated stronger than a channel having a greater energy in calculating the downmix signal (122); and an output interface (160) for generating an output signal, the output signal comprising information on the downmix signal (122).

55. 发明专利

CA2985019C POST-PROCESSOR, PRE-PROCESSOR, AUDIO ENCODER, AUDIO DECODER AND RELATED METHODS FOR ENHANCING TRANSIENT PROCESSING 未知
公开(公告)号：CA2985019C
公开(公告)日：2022-05-03
申请号：CA2985019
申请日：2017-02-10
申请人： FRAUNHOFER GES FORSCHUNG
发明人： GHIDO FLORIN , DISCH SASCHA , HERRE JUERGEN , ADAMI ALEXANDER , REUTELHUBER FRANZ
IPC分类号： H03G3/00 , H03G5/16
摘要： An audio post-processor (100) for post-processing an audio signal (102) having a time-variable high frequency gain information (104) as side information comprises: a band extractor (110) for extracting a high frequency band (112) of the audio signal (102) and a low frequency band (114) of the audio signal (102); a high band processor (120) for performing a time-variable modification of the high frequency band (112) in accordance with the time-variable high frequency gain information (104) to obtain a processed high frequency band (122); and a combiner (130) for combining the processed high frequency band (122) and the low frequency band (114). Furthermore, a pre-processor for analyzing an audio signal to determine a time-variable high frequency gain information, perform modification of an high frequency band, and output a signal comprising the pre-processed audio signal and the high frequency gain information.

56. 发明专利

BR112014021054B1 Controle de coerência de fase para sinais harmônicos nos codecs de áudio perceptuais 未知
公开(公告)号：BR112014021054B1
公开(公告)日：2022-04-26
申请号：BR112014021054
申请日：2013-02-26
申请人： FRAUNHOFER GES FORSCHUNG
发明人： EDLER BERND , NAGEL FREDERIK , HERRE JUERGEN , DISCH SASCHA
IPC分类号： G10L19/02
摘要： controle de coerência de fase para. sinais harmônicos nos codecs de áudio perceptuais. um decodificador para decodificar um sina de áudio codificado para obter um sinal de áudio de ajuste de ase é fornecido. o decodificador compreende uma unidade de decodificação (110) e uma unidade de ajuste de fase (120). a unidade de decodificação (110) é adaptada para decodificar o sinal de áudio codificado para obter um sinal de áudio decodificado. a unidade de ajuste de fase (120) é adaptada para ajustar o sinal de áudio decodificado para obter o sinal de áudio ajustado por fase. a unidade de ajuste de fase (120) é configurada para receber a informação de controle, dependendo de uma coerência de fase vertical do sinal de áudio codificado. além disso, a unidade de ajuste de fase (120) é adaptada para ajustar o sinal de áudio decodificado com base na informação de controle. figura 1a.

57. 发明专利

RU2732995C1 УСТРОЙСТВО И СПОСОБ ДЛЯ ПОСТОБРАБОТКИ ЗВУКОВОГО СИГНАЛА С ИСПОЛЬЗОВАНИЕМ ОСНОВАННОГО НА ПРОГНОЗЕ ПРОФИЛИРОВАНИЯ 未知
公开(公告)号：RU2732995C1
公开(公告)日：2020-09-28
申请号：RU2019134577
申请日：2018-03-29
申请人： FRAUNHOFER GES FORSCHUNG
发明人： DISCH SASCHA , UHLE CHRISTIAN , HERRE JUERGEN , PROKEIN PETER , GAMPP PATRICK , KARAMPOURNIOTIS ANTONIOS , HAVENSTEIN JULIA , HELLMUTH OLIVER , RICHTER DANIEL
IPC分类号： G10L19/03 , G10L19/025 , G10L19/26
摘要： Изобретениеотноситсяк средствамдляпостобработкизвуковогосигнала. Техническийрезультатзаключаетсяв повышенииэффективностипостобработкизвуковогосогнала. Преобразуютзвуковойсигналв спектральноепредставление, содержащеепоследовательностьспектральныхкадров. Рассчитываютпрогнозныеданныефильтрадляпрогнозированияпочастотев пределахспектральногокадра. Профилируют, вответнапрогнозныеданныефильтра, спектральныйкадрдляулучшениякачествавсплесковогоучасткав пределахспектральногокадра. Преобразуютпоследовательностьспектральныхкадров, содержащуюпрофилированныйспектральныйкадр, вовременнуюобласть. Рассчитываютавтокорреляционныйсигнал. Производятоконнуюобработкуавтокорреляционногосигналас помощьюокна, имеющегопервуюпостояннуювремени, чтобыполучитьпервыйрезультирующийсигнал. Рассчитываютпервыепрогнозныеданныефильтраизпервогорезультирующегосигнала. Производятоконнуюобработкуавтокорреляционногосигналас помощьюокна, имеющеговторуюпостояннуювремени, чтобыполучитьвторойрезультирующийсигнал. Рассчитываютвторыепрогнозныеданныефильтраизвторогорезультирующегосигнала. 3 н. и 17 з.п. ф-лы, 62 ил.

58. 发明专利

RU2725178C1 УСТРОЙСТВО И СПОСОБ ДЛЯ КОДИРОВАНИЯ ИЛИ ДЕКОДИРОВАНИЯ МНОГОКАНАЛЬНОГО СИГНАЛА С ИСПОЛЬЗОВАНИЕМ КОЭФФИЦИЕНТА ПЕРЕДАЧИ ПОБОЧНОГО СИГНАЛА И КОЭФФИЦИЕНТА ПЕРЕДАЧИ ОСТАТОЧНОГО СИГНАЛА 未知
公开(公告)号：RU2725178C1
公开(公告)日：2020-06-30
申请号：RU2019117749
申请日：2017-10-30
申请人： FRAUNHOFER GES FORSCHUNG
发明人： BUETHE JAN , FUCHS GUILLAUME , JAEGERS WOLFGANG , REUTELHUBER FRANZ , HERRE JUERGEN , FOTOPOULOU ELENI , MULTRUS MARKUS , KORSE SRIKANTH
IPC分类号： G10L19/008 , H03M7/30
摘要： Изобретениеотноситсяк кодированиюмногоканальногосигнала 100. Техническийрезультат - улучшениеконцепциидляобработкимногоканальныхданных. Дляэтогопредусмотренопоменьшеймередваканала 101, 102 иустройствосодержитпонижающиймикшер 120 длярасчетасигнала 122 понижающегомикшированияизмногоканальногосигнала 100; вычислитель 140 параметровдлярасчетакоэффициента 141 передачипобочногосигналаизпервогоканала 101 поменьшеймереиздвухканалови второгоканала 102 поменьшейизмередвухканалови длярасчетакоэффициента 142 передачиостаточногосигналаизпервогоканала 101 ивторогоканала 102; ивыходнойинтерфейс 160 дляформированиявыходногосигнала, причемвыходнойсигналсодержитинформациюо сигнале 122 понижающегомикширования, атакжео коэффициенте 141 передачипобочногосигналаи коэффициенте 142 передачиостаточногосигнала. 6 н. и 38 з.п. ф-лы, 17 ил.

59. 发明专利

AU2017248532B2 Multi-channel decorrelator, multi-channel audio decoder, multi-channel audio encoder, methods and computer program using a premix of decorrelator input signals 未知
公开(公告)号：AU2017248532B2
公开(公告)日：2019-09-19
申请号：AU2017248532
申请日：2017-10-20
申请人： FRAUNHOFER GES FORSCHUNG
发明人： DISCH SASCHA , FUCHS HARALD , HELLMUTH OLIVER , HERRE JUERGEN , MURTAZA ADRIAN , PAULUS JOUNI , RIDDERBUSCH FALKO , TERENTIV LEON
IPC分类号： H04S3/00 , G10L19/008
摘要： Multi-Channel Decorrelator, Multi-Channel Audio Decoder, Multi-Channel Audio Encoder, Methods and Computer Program using a Premix of Decorrelator Input Signals Abstract A multi-channel decorrelator for providing a plurality of decorrelated signals on the basis of a plurality of decorrelator input signals is configured to premix a first set of N 10 decorrelator input signals into a second set of K decorrelator input signals, wherein K K'. The multi-channel 15 decorrelator can be used in a multi-channel audio decoder. A multi-channel audio encoder provides complexity control information for the multi-channel decorrelator. 20 Figure 6 WO 2015/011014 PCT/EP2014/065395 p)- Soo a)M C/) > ~ CD (.00 -ll CNJ C/) -Fc~ A N ~-3 CD C>CD C o CD CIO) cn

60. 发明专利

CA3083891A1 APPARATUS AND METHOD FOR ENCODING OR DECODING DIRECTIONAL AUDIO CODING PARAMETERS USING DIFFERENT TIME/FREQUENCY RESOLUTIONS 未知
公开(公告)号：CA3083891A1
公开(公告)日：2019-05-23
申请号：CA3083891
申请日：2018-11-16
申请人： FRAUNHOFER GES FORSCHUNG
发明人： FUCHS GUILLAUME , HERRE JUERGEN , KUECH FABIAN , DOEHLA STEFAN , MULTRUS MARKUS , THIERGART OLIVER , WUEBBOLT OLIVER , GHIDO FLORIN , BAYER STEFAN , JAGERS WOLFGANG
IPC分类号： G10L19/00 , G10L19/008
摘要： An apparatus for encoding directional audio coding parameters comprising diffuseness parameters and direction parameters, comprises: a parameter calculator (100) for calculating the diffuseness parameters with a first time or frequency resolution and for calculating the direction parameters with a second time or frequency resolution; and a quantizer and encoder processor (200) for generating a quantized and encoded representation of the diffuseness parameters and the direction parameters.

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