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61. 发明公开

EP1891740A4 SCALABLE COMPRESSED AUDIO BIT STREAM AND CODEC USING A HIERARCHICAL FILTERBANK AND MULTICHANNEL JOINT CODING 有权
标题翻译：分级压缩AUDIOBIT流和编解码器和分级的滤波器和多通道联合编码
公开(公告)号：EP1891740A4
公开(公告)日：2011-09-14
申请号：EP06848793
申请日：2006-06-16
申请人： DTS BVI LTD
发明人： SHMUNK DMITRY V , BEATON RICHARD J
IPC分类号： G10L19/02 , H03M7/28 , H03M7/30
CPC分类号： G10L19/0204 , G10L19/0212 , G10L19/022 , G10L19/035 , G10L19/24 , G10L25/18
摘要： The invention regards a method of hierarchically filtering an input signal to achieve a nearly arbitrary time/frequency decomposition. The method comprises the steps of: (a) buffering samples of the input signal into frames of N samples ( 2900 ); (b) multiplying the N samples in each frame by an N-sample window function ( 2900 ); (c) applying an N-point transform to produce N/2 transform coefficients ( 2902 ); (d) dividing the N/2 residual transform coefficients into P groups of M i coefficients ( 2906 ), such that the sum of the M i coefficients is N/2 f ˆˆ 1 �¢ l 2 (e) for each of P groups, applying a (2* M i )-point inverse transform to the transform coefficients to produce (2* M i ) sub-band samples from each group ( 2906 ); (f) in each sub-band i, multiplying the (2* M i ) sub-band samples by a (2* M i )-point window function ( 2908 ); (g) in each sub-band i, overlapping with M i previous samples and adding corresponding values to produce M i new samples for each sub-band ( 2910 ); and (h) repeating steps (a)-(g) on one or more of the sub-bands of M i new samples using successively smaller transform sizes N ( 2912 ) until the desired time/transform resolution is achieved ( 2914 ). The invention further comprises a method of hierarchically reconstructing time samples of an input signal, in which each input frame contains M i time samples in each of P sub-bands.

62. 发明公开

EP2188975A4 A VOICE COMMUNICATION DEVICE, SIGNAL PROCESSING DEVICE AND HEARING PROTECTION DEVICE INCORPORATING SAME 审中-公开
标题翻译： ÖUT ZE UNG UNG IT IT IT IT IT IT IT IT IT IT IT IT IT IT IT IT IT IT IT IT IT
公开(公告)号：EP2188975A4
公开(公告)日：2011-06-15
申请号：EP08783059
申请日：2008-09-05
申请人： SENSEAR PTY LTD
发明人： LOW SIOW YONG , OESTLIN ERIK NIKLAS , DAVIS ALAN
IPC分类号： G10L21/02
CPC分类号： G10L21/0208 , G10L25/18

63. 发明公开

EP2306456A1 Method for decoding an audio signal that has a base layer and an enhancement layer 审中-公开
标题翻译：用于与基础层和增强层的解码音频信号的方法
公开(公告)号：EP2306456A1
公开(公告)日：2011-04-06
申请号：EP09305810.5
申请日：2009-09-04
申请人： Thomson Licensing
发明人： Jax, Peter , Kordon, Sven
IPC分类号： G10L19/02 , G10L19/14
CPC分类号： G10L19/24 , G10L19/0017 , G10L19/0212 , G10L19/173 , G10L25/18
摘要： An audio signal may have a base layer BL and an enhancement layer EL, wherein the EL represents additional information for enhancing the quality of the BL audio content. Decoding of such dual-layer signals usually comprises partial decoding (21) of the BL data, wherein frequency bins of the BL are restored (22), mapping (23) the restored frequency bins to the MDCT domain, adding them to the decoded EL and performing inverse Integer MDCT. A low-complexity method for decoding comprises reverse mapping (45) of the decoded EL data, adding (42) the reverse mapped EL data to the partially decoded BL data and filtering the sum, using the inverse BL filter bank.
摘要翻译：音频信号可以具有基本层BL和增强层EL，用于增强BL音频内容的质量的EL worin darstellt附加信息。求双层信号的解码通常包括BL数据的部分解码（21），则BL的worin频率仓被还原（22），映射（23）恢复的频率仓到MDCT域，将它们添加到经解码的EL 和执行逆整数MDCT。用于解码的低复杂度方法包括反向映射的数据到EL部分解码的BL数据和过滤的总和，使用逆滤波器组BL解码的EL数据的逆映射（45），加入（42）。

64. 发明公开

EP2306449A1 A method of correcting errors in binary masks 有权
标题翻译：弗拉赫伦·祖尔·费勒克雷克图尔
公开(公告)号：EP2306449A1
公开(公告)日：2011-04-06
申请号：EP09168699.8
申请日：2009-08-26
申请人： OTICON A/S
发明人： Boldt, Jesper Bünsow , Kjems, Ulrik , Pedersen, Michael Syskind , Christensen, Mads Græsbøll , Jensen, Søren Holdt
IPC分类号： G10L11/00
CPC分类号： H04R25/505 , G10L15/142 , G10L21/02 , G10L25/18 , G10L25/48 , G10L2021/065 , H04R2225/43
摘要： The invention relates to a method of identifying and correcting errors in a noisy binary mask. An object of the present invention is to provide a scheme for improving a binary mask representing speech. The problem is solved in that the method comprises a) providing a noisy binary mask comprising a binary representation of the power density of an acoustic signal comprising a target signal and a noise signal at a predefined number of discrete frequencies and a number of discrete time instances; b) providing a statistical model of a clean binary mask representing the target signal; and c) using the statistical model to detect and correct errors in the noisy binary mask. This has the advantage of providing an alternative and relatively simple way of improving an estimate of a binary mask representing a speech signal. The invention may e.g. be used for the speech processing, e.g. in a hearing instrument.
摘要翻译：本发明涉及一种识别和纠正噪声二进制掩码中的错误的方法。本发明的目的是提供一种用于改进表示语音的二进制掩码的方案。解决的问题是，该方法包括：a）提供噪声二进制掩模，其包括包含目标信号和噪声信号的声信号的功率密度的二进制表示，所述噪声信号以预定数量的离散频率和多个离散时间实例 ; b）提供表示目标信号的干净二进制掩码的统计模型; 和c）使用统计模型来检测和纠正噪声二进制掩码中的错误。这具有提供改进对表示语音信号的二进制掩码的估计的替代且相对简单的方法的优点。本发明可以例如。用于语音处理，例如。在听力仪器中。

65. 发明公开

EP2238594A1 METHOD AND APPARATUS FOR ESTIMATING HIGH-BAND ENERGY IN A BANDWIDTH EXTENSION SYSTEM 有权转让
标题翻译：方法和装置估算高频段能量带宽扩展系统
公开(公告)号：EP2238594A1
公开(公告)日：2010-10-13
申请号：EP09708900.7
申请日：2009-01-28
申请人： Motorola, Inc.
发明人： RAMABADRAN, Tenkasi V. , JASIUK, Mark A.
IPC分类号： G10L21/02 , G10L11/00
CPC分类号： G10L21/038 , G10L25/18 , G10L25/21
摘要： A method (100) includes receiving (101) an input digital audio signal comprising a narrow-band signal. The input digital audio signal is processed (102) to generate a processed digital audio signal. A high-band energy level corresponding to the input digital audio signal is estimated (103) based on an estimated enery of a transition- band of the processed digital audio signal within a predetermined upper frequency range of a narrow-band bandwidth. A high-band digital audio signal is generated (104) based on the high-band energy level and an estimated high-band spectrum corresponding to the high-band energy level.

66. 发明授权

EP1688912B1 Voice synthesizer of multi sounds 有权
标题翻译：语音合成器与多个声音
公开(公告)号：EP1688912B1
公开(公告)日：2010-09-15
申请号：EP06101138.3
申请日：2006-02-01
申请人： YAMAHA CORPORATION
发明人： Kemmochi, Hideki , Bonada, Jordi
IPC分类号： G10L13/06 , G10L21/00
CPC分类号： G10L13/06 , G10L25/18 , G10L2021/0135

67. 发明授权

EP1643642B1 Apparatus for calculating gain adjustment values for gain adjusting a plurality of subband signals in real-valued filterbanks and corresponding method 有权转让
标题翻译：设备，用于调节多个子带信号的增益以实数值的滤波器组和相关的方法计算增益调整值
公开(公告)号：EP1643642B1
公开(公告)日：2010-08-18
申请号：EP06000181.5
申请日：2003-08-27
申请人： Dolby International AB
发明人： Kjörling, Kristofer , Villemoes, Lars
IPC分类号： H03H17/02
CPC分类号： G10L19/0204 , G10L19/00 , G10L19/025 , G10L19/083 , G10L19/12 , G10L19/26 , G10L25/12 , G10L25/18 , G10L25/21 , G10L25/48 , H03H17/0266
摘要： The present invention proposes a new method for improving the performance of a real-valued filterbank based spectral envelope adjuster. By adaptively locking the gain values for adjacent channels dependent on the sign of the channels, as defined in the application, reduced aliasing is achieved. Furthermore, the grouping of the channels during gain-calculation, gives an improved energy estimate of the real valued subband signals in the filterbank.
摘要翻译：本发明提出了一种用于改善实值滤波器组的基于频谱包络调整器的性能的新方法。通过自适应地锁定为在应用程序定义的依赖于信道的符号相邻信道时，增益值，减小混叠的实现。进一步，增益计算时的信道的分组，使在滤波器组的实值子带信号的改进的能量估计。

68. 发明授权

EP2045801B1 Efficient audio signal processing in the sub-band regime, method, system and associated computer program 有权
标题翻译：在子带音频信号，方法，装置高效的处理和相关联的计算机程序
公开(公告)号：EP2045801B1
公开(公告)日：2010-08-11
申请号：EP07019281.0
申请日：2007-10-01
申请人： Harman Becker Automotive Systems GmbH
发明人： Schmidt, Gerhard , Köpf, Hans-Jörg , Wirsching, Günther
IPC分类号： G10L21/02 , H04M9/08
CPC分类号： H04M9/082 , G10L25/18 , G10L2021/02082

69. 发明公开

EP2188008A1 ELECTRICAL NERVE STIMULATION WITH BROAD BAND LOW FREQUENCY FILTER 有权
标题翻译：随着宽带低频滤波器神经电刺激
公开(公告)号：EP2188008A1
公开(公告)日：2010-05-26
申请号：EP08781698.9
申请日：2008-07-11
申请人： Med-El Elektromedizinische Geräte GmbH
发明人： ZIERHOFER, Clemens, M.
IPC分类号： A61N1/36 , H04R25/00 , A61F11/04
CPC分类号： A61N1/36032 , A61N1/0541 , A61N1/36036 , G10L25/18 , G10L2021/065
摘要： A system and method of generating electrode stimulation signals for an implanted multi-channel electrode array of a cochlear implant includes processing an acoustic audio signal with a bank of filters. Each filter in the bank of filters is associated with at least one channel having an electrode. The bank of filters includes a first band pass filter that produces a broadband signal b(t) with frequencies that substantially cover at least one of a pitch frequency range of 100 Hz to 400 Hz and a first format range of 400 Hz-1000 Hz. At least one electrode associated with the first band pass filter is activated with electrode stimulation signals based, at least in part, on the broadband signal b(t). The filter bank may include at least one electrode associated with one or more filters other than the first band pass filter, the one or more filters producing signals having only higher frequencies than broadband signal b(t).

70. 发明公开

EP2137728A1 NOISE VARIANCE ESTIMATOR FOR SPEECH ENHANCEMENT 有权
标题翻译：噪声方差估计技术的语音改进
公开(公告)号：EP2137728A1
公开(公告)日：2009-12-30
申请号：EP08726859.5
申请日：2008-03-14
申请人： Dolby Laboratories Licensing Corporation
发明人： YU, Rongshan
IPC分类号： G10L21/02 , G10L11/00
CPC分类号： G10L21/0208 , G10L25/18
摘要： A speech enhancement method operative for devices having limited available memory is described. The method is appropriate for very noisy environments and is capable of estimating the relative strengths of speech and noise components during both the presence as well as the absence of speech.

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