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1. 发明公开

EP4454298A1 MULTI CHANNEL AUDIO PROCESSING FOR UPMIXING/REMIXING/DOWNMIXING APPLICATIONS 失效
公开(公告)号：EP4454298A1
公开(公告)日：2024-10-30
申请号：EP22836266.1
申请日：2022-12-20
申请人： Dirac Research AB
发明人： SKOVGAARD CHRISTENSEN, Søren , HØJEN-SØRENSEN, Pedro , ROLLE HANSEN, Morten , VOLKOV, Denys , BRÄNNMARK, Lars-Johan
IPC分类号： H04S5/00 , H04S5/02
CPC分类号： H04S5/005 , H04S5/02

2. 发明授权

EP3059732B1 AUDIO DECODING DEVICE 有权
公开(公告)号：EP3059732B1
公开(公告)日：2018-10-10
申请号：EP14853892.9
申请日：2014-08-20
申请人： Socionext Inc.
发明人： MIYASAKA, Shuji , ABE, Kazutaka , LIU, Zong Xian , SIM, Yong Hwee , TRAN, Anh Tuan
IPC分类号： G10L19/008 , H04S5/02 , H04S5/00 , G10L19/002 , H04S3/00
CPC分类号： G10L19/008 , G10L19/002 , H04S3/008 , H04S5/005 , H04S2400/11 , H04S2400/15
摘要： An input signal includes a channel-based audio signal and an object-based audio signal, and an audio encoding device includes an audio scene analysis unit (100) configured to determine an audio scene from the input signal and detect audio scene information; a channel-based encoder (101) that encodes the channel-based audio signal output from the audio scene analysis unit; an object-based encoder (102) that encodes the object-based audio signal output from the audio scene analysis unit; and an audio scene encoding unit (103) configured to encode the audio scene information.

3. 发明授权

EP2708038B1 A SPEAKER FOR REPRODUCING SURROUND SOUND 有权
公开(公告)号：EP2708038B1
公开(公告)日：2018-08-08
申请号：EP12781939.9
申请日：2012-04-26
申请人： Creative Technology Ltd.
发明人： KOH, Swee, Leong, Alvin , ONG, Kok Huan
IPC分类号： H04R5/00 , H04S3/00 , H04S5/00
CPC分类号： H04R5/04 , H04R2420/07 , H04S5/005
摘要： The present invention relates to a speaker, and a method and surround sound system for processing multi-channel audio signals in each of a plurality of audio output sources for generation of surround sound in a listening area. In particular, the system comprises a transmitter for transmitting a left channel (L) signal and a right channel (R) signal to a speaker. The speaker comprises a processing unit configured to (a) receive an audio signal having a left channel (L) signal and a right channel (R) signal; (b) process separately and independently the L and R audio signals to produce processed signals; and (c) mix the processed signals to produce the surround sound signal.

4. 发明公开

EP3282448A2 COMPRESSION OF DECOMPOSED REPRESENTATIONS OF A SOUND FIELD 无效
公开(公告)号：EP3282448A2
公开(公告)日：2018-02-14
申请号：EP17177230.4
申请日：2014-05-29
申请人： Qualcomm Incorporated
发明人： Sen, Dipanjan , Ryu, Sang-Uk
IPC分类号： G10L19/038 , G10L19/008 , H04R5/00 , G06F17/16 , H04S7/00
CPC分类号： H04S5/005 , G06F17/16 , G10L19/002 , G10L19/008 , G10L19/0204 , G10L19/038 , G10L19/06 , G10L19/167 , G10L19/20 , G10L25/18 , G10L2019/0001 , G10L2019/0005 , H04R2205/021 , H04S7/30 , H04S7/304 , H04S7/40 , H04S2400/01 , H04S2400/15 , H04S2420/01 , H04S2420/03 , H04S2420/11
摘要： In general, techniques are described for performing a vector-based synthesis with respect to higher order ambisonic coefficients (or, in other words, spherical harmonic coefficients). A device comprising a processor may be configured to perform the techniques. The processor may perform the vector-based synthesis with respect to spherical harmonic coefficients to generate decomposed representations of the plurality of spherical harmonic coefficients and determine distinct and background directional information from the directional information. The processor may then reduce an order of the directional information associated with the background audio objects to generate transformed background directional information, and apply compensation to increase values of the transformed directional information to preserve an overall energy of the sound field.

5. 发明授权

EP3061089B1 PARAMETRIC RECONSTRUCTION OF AUDIO SIGNALS 有权转让
标题翻译：音频信号的参数重构
公开(公告)号：EP3061089B1
公开(公告)日：2018-01-17
申请号：EP14792778.4
申请日：2014-10-21
申请人： Dolby International AB
发明人： VILLEMOES, Lars , LEHTONEN, Heidi-Maria , PURNHAGEN, Heiko , HIRVONEN, Toni
IPC分类号： G10L19/008
CPC分类号： G10L19/167 , G10L19/008 , G10L19/265 , H04S5/005 , H04S2420/03
摘要： An encoding system (400) encodes an N-channel audio signal (X), wherein N≧3, as a single-channel downmix signal (Y) together with dry and wet upmix parameters (C, P). In a decoding system (200), a decorrelating section (101) outputs, based on the downmix signal, an (N−1)-channel decorrelated signal (Z); a dry upmix section (102) maps the downmix signal linearly in accordance with dry upmix coefficients (C) determined based on the dry upmix parameters; a wet upmix section (103) populates an intermediate matrix based on the wet upmix parameters and knowing that the intermediate matrix belongs to a predefined matrix class, obtains wet upmix coefficients (P) by multiplying the intermediate matrix by a predefined matrix, and maps the decorrelated signal linearly in accordance with the wet upmix coefficients; and a combining section (104) combines outputs from the upmix sections to obtain a reconstructed signal (X) corresponding to the signal to be reconstructed.

6. 发明公开

EP3163915A4 METHOD AND DEVICE FOR RENDERING ACOUSTIC SIGNAL, AND COMPUTER-READABLE RECORDING MEDIUM 审中-公开
公开(公告)号：EP3163915A4
公开(公告)日：2017-12-20
申请号：EP15811229
申请日：2015-06-26
申请人： SAMSUNG ELECTRONICS CO LTD
发明人： CHON SANG-BAE , KIM SUN-MIN
IPC分类号： H04S5/00 , H04S3/00
CPC分类号： H04S7/302 , H04S3/008 , H04S5/005 , H04S2400/01 , H04S2400/03 , H04S2420/05
摘要： When a channel signal, such as a 22.2 channel signal, is rendered into a 5.1 channel signal, a three-dimensional (3D) audio may be reproduced by using a two-dimensional (2D) output channel, however, when an elevation angle of an input channel is different from a standard elevation angle, if elevation rendering parameters according to the standard elevation angle are used, distortion may occur in a sound image. In order to solve the aforementioned problem according to the related art and to prevent front-back confusion due to a surround output channel, an embodiment of the present invention provides a method of rendering an audio signal, the method including receiving a multichannel signal including a plurality of input channels to be converted to a plurality of output channels; adding a preset delay to a frontal height input channel so as to allow each of the plurality of output channels to provide a sound image having an elevation at a reference elevation angle; changing, based on the added delay, an elevation rendering parameter with respect to the frontal height input channel; and preventing front-back confusion by generating, based on the changed elevation rendering parameter, an elevation-rendered surround output channel delayed with respect to the frontal height input channel.

7. 发明公开

EP3255450A1 A POSITIONING ARRANGEMENT 审中-公开
标题翻译：定位安排
公开(公告)号：EP3255450A1
公开(公告)日：2017-12-13
申请号：EP16173657.4
申请日：2016-06-09
申请人： Nokia Technologies Oy
发明人： ERONEN, Antti , LEHTINIEMI, Arto , LEPPÄNEN, Jussi , KOLMONEN, Veli-Matti
IPC分类号： G01S5/02
CPC分类号： H04S7/303 , G01S5/02 , H04H60/04 , H04N7/181 , H04R1/406 , H04S5/005 , H04S2400/11 , H04S2420/01
摘要： The invention relates to a method and a system for positioning objects, the method comprising detecting, by a central unit, signals from a plurality of receiver/transmitter units at least partly surrounding an area around the central unit; detecting, by the central unit, an absence of at least one signal from at least one of the plurality of receiver/transmitter units at least partly surrounding an area around the central unit; and determining a position of at least one object between the central unit and the at least one of the plurality of receiver/transmitter units based on the detected absence of the at least one signal.
摘要翻译：用于定位对象的方法和系统技术领域本发明涉及一种用于定位对象的方法和系统，该方法包括：由中央单元检测来自至少部分围绕中央单元的区域的多个接收器/发送器单元的信号; 由中央单元检测来自至少部分围绕中央单元的区域的多个接收器/发射器单元中的至少一个的至少一个信号的缺失; 以及基于所检测到的所述至少一个信号的不存在来确定所述中央单元与所述多个接收器/发射器单元中的所述至少一个之间的至少一个对象的位置。

8. 发明授权

EP2382631B1 DISTRIBUTED SPATIAL AUDIO DECODER 有权
标题翻译：分布式空间音频解码器
公开(公告)号：EP2382631B1
公开(公告)日：2017-06-14
申请号：EP10729477.9
申请日：2010-01-06
申请人： Creative Technology Ltd.
发明人： WALSH, Martin , JOT, Jean-Marc , STEIN, Edward
IPC分类号： G10L19/16 , G10L19/008 , H04S5/00
CPC分类号： G10L19/16 , G10L19/008 , H04R2205/024 , H04R2420/07 , H04S5/005

9. 发明公开

EP3048815A4 METHOD AND APPARATUS FOR PROCESSING AUDIO SIGNALS 有权转让
标题翻译： VERFAHREN UND VORRICHTUNG ZUR VERARBEITUNG VON AUDIOSIGNALEN
公开(公告)号：EP3048815A4
公开(公告)日：2017-05-31
申请号：EP14846160
申请日：2014-09-17
申请人： WILUS INST STANDARDS & TECHNOLOGY INC
发明人： OH HYUNOH , LEE TAEGYU
IPC分类号： H04S3/00 , G10L19/008 , G10L19/02 , H03H17/02 , H03H21/00 , H04S3/02
CPC分类号： H04S5/005 , G10L19/008 , G10L19/0204 , G10L25/48 , H03H17/0229 , H03H17/0248 , H03H17/0266 , H03H17/0272 , H03H21/0012 , H04R5/04 , H04S3/00 , H04S3/002 , H04S3/008 , H04S3/02 , H04S7/30 , H04S2400/01 , H04S2400/03 , H04S2420/03 , H04S2420/07 , H04S2420/11
摘要： The present invention relates to a method and an apparatus for processing a signal, which are used for effectively reproducing a multimedia signal, and more particularly, to a method and an apparatus for processing a signal, which are used for implementing filtering for multimedia signal having a plurality of subbands with a low calculation amount. To this end, provided are a method for processing a multimedia signal including: receiving a multimedia signal having a plurality of subbands; receiving at least one proto-type filter coefficients for filtering each subband signal of the multimedia signal; converting the proto-type filter coefficients into a plurality of subband filter coefficients; truncating each subband filter coefficients based on filter order information obtained by at least partially using characteristic information extracted from the corresponding subband filter coefficients, the length of at least one truncated subband filter coefficients being different from the length of truncated subband filter coefficients of another subband; and filtering the multimedia signal by using the truncated subband filter coefficients corresponding to each subband signal and an apparatus for processing a multimedia signal using the same.
摘要翻译：用于处理信号的方法和设备技术领域本发明涉及用于有效地再现多媒体信号的信号处理方法和设备，并且更具体地涉及用于处理信号的方法和设备，具有低计算量的多个子带。为此，提供了一种用于处理多媒体信号的方法，包括：接收具有多个子带的多媒体信号; 接收用于对所述多媒体信号的每个子带信号进行滤波的至少一个原型滤波器系数; 将原型滤波器系数转换成多个子带滤波器系数; 基于通过至少部分地使用从相应的子带滤波器系数提取的特征信息获得的滤波器阶数信息来截断每个子带滤波器系数，所述至少一个截断的子带滤波器系数的长度不同于另一个子带的截短的子带滤波器系数的长度; 以及使用对应于每个子带信号的截断的子带滤波器系数对多媒体信号进行滤波以及使用该装置处理多媒体信号的装置。

10. 发明公开

EP3048814A4 METHOD AND DEVICE FOR AUDIO SIGNAL PROCESSING 有权转让
标题翻译： VERFAHREN UND VORRICHTUNG ZUR VERARBEITUNG VON TONSIGNALEN
公开(公告)号：EP3048814A4
公开(公告)日：2017-05-31
申请号：EP14845972
申请日：2014-09-17
申请人： WILUS INST STANDARDS & TECHNOLOGY INC
发明人： LEE TAEGYU , OH HYUNOH
IPC分类号： H04S3/00 , G10L19/008 , G10L19/02 , H03H17/02 , H04S3/02
CPC分类号： H04S5/005 , G10L19/008 , G10L19/0204 , G10L25/48 , H03H17/0229 , H03H17/0248 , H03H17/0266 , H03H17/0272 , H03H21/0012 , H04R5/04 , H04S3/00 , H04S3/002 , H04S3/008 , H04S3/02 , H04S7/30 , H04S2400/01 , H04S2400/03 , H04S2420/03 , H04S2420/07 , H04S2420/11
摘要： The present invention relates to a method and an apparatus for processing a signal, which are used for effectively reproducing a multimedia signal, and more particularly, to a method and an apparatus for processing a signal, which are used for implementing filtering for multimedia signal having a plurality of subbands with a low calculation amount. To this end, provided are a method for processing a multimedia signal including: receiving a multimedia signal having a plurality of subbands; receiving at least one proto-type filter coefficients for filtering each subband signal of the multimedia signal; converting the proto-type filter coefficients into a plurality of subband filter coefficients; truncating each subband filter coefficients based on filter order information obtained by at least partially using characteristic information extracted from the corresponding subband filter coefficients, the length of at least one truncated subband filter coefficients being different from the length of truncated subband filter coefficients of another subband; and filtering the multimedia signal by using the truncated subband filter coefficients corresponding to each subband signal and an apparatus for processing a multimedia signal using the same.
摘要翻译：用于处理信号的方法和设备技术领域本发明涉及用于有效地再现多媒体信号的信号处理方法和设备，并且更具体地涉及用于处理信号的方法和设备，具有低计算量的多个子带。为此，提供了一种用于处理多媒体信号的方法，包括：接收具有多个子带的多媒体信号; 接收用于对所述多媒体信号的每个子带信号进行滤波的至少一个原型滤波器系数; 将原型滤波器系数转换成多个子带滤波器系数; 基于通过至少部分地使用从相应的子带滤波器系数提取的特征信息获得的滤波器阶数信息来截断每个子带滤波器系数，所述至少一个截断的子带滤波器系数的长度不同于另一个子带的截短的子带滤波器系数的长度; 以及使用对应于每个子带信号的截断的子带滤波器系数对多媒体信号进行滤波以及使用该装置处理多媒体信号的装置。

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