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1. 发明专利

JP2012083775A Signal processor and signal processing method 有权
标题翻译：信号处理器和信号处理方法
公开(公告)号：JP2012083775A
公开(公告)日：2012-04-26
申请号：JP2011260812
申请日：2011-11-29
申请人： Toshiba Corp , 株式会社東芝
发明人： TANIGUCHI TAKAYUKI , TSUKAHARA YURIKO , MISEKI KIMIO
IPC分类号： G10L19/14 , G10L19/00 , G10L21/02 , H03M7/30
摘要： PROBLEM TO BE SOLVED: To transmit/receive high-quality voice by including a noise suppressor exhibiting a sufficient function even if a use setting is changed.SOLUTION: According to one embodiment, a signal processor includes: noise suppressing means for adaptively suppressing noise components contained in a voice signal; and encoding means for processing, by encoding process, the voice signal in which noise components are suppressed by the noise suppressing means, and generating compressed encoded voice data. The encoding means can perform a plurality of different encoding processes. The noise suppressing means suppresses noise of a signal of a frequency band encoded by the encoding means, using a different noise suppressing method according to the encoding process performed by the encoding means.
摘要翻译：要解决的问题：即使改变使用设置，通过包括具有足够功能的噪声抑制器来发送/接收高质量语音。解决方案：根据一个实施例，信号处理器包括：噪声抑制装置，用于自适应地抑制语音信号中包含的噪声分量; 以及编码装置，用于通过编码处理处理由噪声抑制装置抑制噪声分量的语音信号，并产生压缩编码语音数据。编码装置可以执行多个不同的编码处理。噪声抑制装置使用根据由编码装置进行的编码处理的不同的噪声抑制方法来抑制由编码装置编码的频带的信号的噪声。版权所有（C）2012，JPO＆INPIT

2. 发明专利

JP2010160496A Signal processing device and signal processing method 审中-公开
标题翻译：信号处理装置和信号处理方法
公开(公告)号：JP2010160496A
公开(公告)日：2010-07-22
申请号：JP2010030698
申请日：2010-02-15
申请人： Toshiba Corp , 株式会社東芝
发明人： TANIGUCHI TAKAYUKI , TSUKAHARA YURIKO , MISEKI KIMIO
IPC分类号： G10L21/02 , G10L19/00 , H03M7/30 , H04M1/60
摘要： PROBLEM TO BE SOLVED: To provide a signal processing device in which a noise suppressor demonstrates a sufficient function, and which transmits and receives high quality voice, even when use setting is changed. SOLUTION: A voice coding device 120 is provided with: an A system coding section 121; a B system coding section 122; and a C system coding section 123, as three circuits for coding a voice data by algorithms which are different from one another. The noise suppressor 110 is provided with: an X system noise suppressing section 111; a Y system noise suppressing section 112; and a Z system noise suppressing section 113, as three circuits for suppressing a background noise by algorithms which are different from one another. A suppression system switching control section 114 makes the optimum noise suppressing section (any one of 111, 112 or 113) operate, according to the coding section (any one of 121, 122 or 123) which functions in the voice coding device 120, on the basis of information from the coding system switching control section 124. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：即使当改变使用设置时，提供其中噪声抑制器表现出足够的功能并且发送和接收高质量语音的信号处理装置。解决方案：语音编码装置120具有：A系统编码部分121; B系统编码部分122; 和C系统编码部分123，作为用于通过不同的算法对语音数据进行编码的三个电路。噪声抑制器110具有：X系统噪声抑制部111; Y系统噪声抑制部112; 和Z系统噪声抑制部分113，作为用于通过彼此不同的算法来抑制背景噪声的三个电路。抑制系统切换控制部114根据在语音编码装置120中工作的编码部（任何一个，121,122或123），使最优噪声抑制部（111,112或113中的任一个）工作，来自编码系统切换控制部分124的信息的基础。版权所有：（C）2010，JPO＆INPIT

3. 发明专利

JPH033496A PICTURE CODING SYSTEM 失效
公开(公告)号：JPH033496A
公开(公告)日：1991-01-09
申请号：JP13598789
申请日：1989-05-31
申请人： TOSHIBA CORP
发明人： TSUKAHARA YURIKO , AKAMINE MASAMI
IPC分类号： H04N19/176 , H04N1/413 , H04N1/415 , H04N19/115 , H04N19/12 , H04N19/124 , H04N19/126 , H04N19/134 , H04N19/136 , H04N19/146 , H04N19/189 , H04N19/192 , H04N19/196 , H04N19/423 , H04N19/46 , H04N19/60 , H04N19/625 , H04N19/70 , H04N19/91
摘要： PURPOSE:To improve the picture quality of a decoded picture by preparing plural sets of orthogonal transformers and setting a quantizer depending on each of plural orthogonal transformations applied to each block. CONSTITUTION:At first a picture is split into blocks of 8X8 and 16X16 and information such as a coefficient obtained from autocorrelation matrix, variance or each conversion of each block is extracted. Based on the information, one of optimum one among plural orthogonal transformation sets is selected. Then based on the information or conversion of all blocks, the quantization method is decided for each block or each conversion. Then the decided conversion is in use to apply orthogonal transformation and the transformation coefficient is quantized by the method decided by each transformation to attain coding transmission. Thus, a bit number and a step number size in response to the transformation are used to attain the coding reflecting much of the property of the transformation and excellent picture quality more than that of a conventional system is obtained.

4. 发明专利

JP2001344000A NOISE CANCELER, COMMUNICATION EQUIPMENT PROVIDED WITH IT, AND STORAGE MEDIUM WITH NOISE CANCELLATION PROCESSING PROGRAM STORED 失效
公开(公告)号：JP2001344000A
公开(公告)日：2001-12-14
申请号：JP2000162086
申请日：2000-05-31
申请人： TOSHIBA CORP
发明人： TSUKAHARA YURIKO
IPC分类号： G10L21/02 , G10L11/00 , G10L11/02 , G10L19/02 , H03H17/00 , H03H21/00 , H04B3/20
摘要： PROBLEM TO BE SOLVED: To improve the cancellation performance by excluding an influence of a noise energy to perform stable noise suppression processing even in the case of variance of the noise energy and preventing an unexpected noise from being erroneously detected as a sound to improve the discrimination precision of a sound/noise section. SOLUTION: A minimum value of the noise power in each band is obtained in a noise minimum value estimating circuit 29, and a spectrum shape of this noise minimum value is used for determination of a gain in each band by a band-classified gain determination part 33, and a weighting addition value of a difference in each of plural continuous bands where a threshold exceeds one is obtained by a significant value calculation part 27, and this weighting addition value is used to calculate a sound weight in a sound weight calculation part 28, namely, to discriminate whether a pertinent frame is a sound frame, a noise frame or an intermediate transitional area frame between them.

5. 发明专利

JP2000020094A VOICE ENCODING CIRCUIT AND VOICE COMMUNICATION DEVICE PROVIDED WITH THIS CIRCUIT 失效
公开(公告)号：JP2000020094A
公开(公告)日：2000-01-21
申请号：JP18431798
申请日：1998-06-30
申请人： TOSHIBA CORP
发明人： TANIGUCHI TAKAYUKI , TSUKAHARA YURIKO , TATSUMI KAORU , SAKANISHI MASAYUKI
IPC分类号： G10L15/02 , G10L19/00 , G10L19/002 , G10L19/012 , G10L21/0208 , G10L25/00 , G10L25/78 , H03M7/30 , H04J13/00 , H04J13/16 , G10L21/02
摘要： PROBLEM TO BE SOLVED: To improve communication quality by preventing feeling of interruption of a voice at a receiving side even when a background noise level is large. SOLUTION: When an input signal frame is discriminated as a section having only a background noise, an estimation power value BNP [K] of a background noise is compared with UPL2 being smaller than the maximum limit value ULP1 of an encoding level of a third encoding section 36 for encoding a background noise by the prescribed level in a background noise level discriminating means 334, it is discriminated whether BNP[K]>=ULP2 or not. When it is BNP[K]>=ULP2, the third encoding section 36 for encoding a background noise is not selected, but a second encoding section 35 is selected.

6. 发明专利

JPH0954600A VOICE-CODING COMMUNICATION DEVICE 失效
公开(公告)号：JPH0954600A
公开(公告)日：1997-02-25
申请号：JP20715495
申请日：1995-08-14
申请人： TOSHIBA CORP
发明人： TSUKAHARA YURIKO , MINAMI SHIGENOBU
IPC分类号： G10L19/02 , G10L19/04 , H03M1/12 , G10L9/18 , G10L9/14
摘要： PROBLEM TO BE SOLVED: To additionally enhance communication quality in high-noise environment by decreasing the distortions between noise frames and improving a noise characteristic. SOLUTION: This device is provided with a noise level estimating section 13 and a noise power calculating section 15 separately from an encoding section 17 and is provided with a noise LPC estimating section 16. The noise power and noise LPC coeffts. in the past plural noise frames of transmitted speeches are continuously and respectively calculated by these section. The results of the calculation of the noise power and noise LPC coeffts. are supplied to the encoding section 17, by which the results are encoded at the time of encoding the present noise frames in the encoding section 17.

7. 发明专利

JP2010160521A Noise canceller, and communication device equipped with the same 审中-公开
标题翻译：噪音消除器，以及与此相同的通信设备
公开(公告)号：JP2010160521A
公开(公告)日：2010-07-22
申请号：JP2010089555
申请日：2010-04-08
申请人： Toshiba Corp , 株式会社東芝
发明人： TSUKAHARA YURIKO
IPC分类号： G10L21/02
摘要： PROBLEM TO BE SOLVED: To reduce generation of voice distortion in noise suppressing by performing stable noise suppression processing by avoiding influence of change, even when noise energy is changed.
SOLUTION: In a noise minimum value estimation circuit 29, a minimum value of acoustic noise power of each band is calculated, and a spectrum feature of the noise minimum value is used for determination of a band classified gain by a band classified gain determination section 33.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：即使当噪声能量改变时，通过避免影响变化来执行稳定的噪声抑制处理来减少噪声抑制中的语音失真的产生。解决方案：在噪声最小值估计电路29中，计算每个频带的声学噪声功率的最小值，并且将噪声最小值的频谱特征用于通过频带分类增益来确定频带分类增益确定部分33.版权所有（C）2010，JPO＆INPIT

8. 发明专利

JP2002300687A ELECTRONIC APPARATUS 失效
公开(公告)号：JP2002300687A
公开(公告)日：2002-10-11
申请号：JP2001095039
申请日：2001-03-29
申请人： TOSHIBA CORP
发明人： TSUKAHARA YURIKO
IPC分类号： H04R3/02 , G10L21/02 , H04M1/00 , H04M1/60 , H04M1/725
摘要： PROBLEM TO BE SOLVED: To provide an electronic apparatus which realizes a satisfactory noise suppressing function and voice switch function. SOLUTION: The electronic apparatus comprises a voice switch for inserting a loss corresponding to a signal attenuation A in a transmitted or received signal and a noise canceler which detects voice components from the transmitted or received signal, computes a signal attenuation B and compares the attenuation A with the attenuation B to obtain an adjusted final signal attenuation C for suppressing noise.

9. 发明专利

JP2002076960A NOISE SUPPRESSING METHOD AND MOBILE TELEPHONE 失效
公开(公告)号：JP2002076960A
公开(公告)日：2002-03-15
申请号：JP2000262326
申请日：2000-08-31
申请人： TOSHIBA CORP
发明人： TSUKAHARA YURIKO
IPC分类号： G10L21/02 , G10L19/12 , H04B1/10
摘要： PROBLEM TO BE SOLVED: To provide a noise suppressing method for determining a good noise frame. SOLUTION: This noise suppressing system comprises the steps of dividing a transmission input signal into frames of a prescribed unit of time, dividing each frame to prescribed frequency bands, desiding whether each frame is a noise frame or not, reconfiguring a frame by controlling the gain for each band by reflecting the result of decision, and then outputting a transmittion signal in which the noise is suppressed. As a result, the present frame is decided whether it is a noise frame or not based on a normalization ratio (r) when a value (sum) obtained by totalizing the present frame and preceding frame of a significant value (suby) for each bandwidth in which the difference between the bandwidth power and estimated bandwidth noise power is weighted, is normalized with the sum number average of this value.

10. 发明专利

JP2001320289A NOISE CANCELER, COMMUNICATION EQUIPMENT PROVIDED WITH THE SAME AND STORAGE MEDIUM WITH NOISE CANCEL PROCESSING PROGRAM STORED THEREIN 失效
公开(公告)号：JP2001320289A
公开(公告)日：2001-11-16
申请号：JP2000134932
申请日：2000-05-08
申请人： TOSHIBA CORP
发明人： TSUKAHARA YURIKO
IPC分类号： G10L21/02 , H04B1/10 , H04L27/22
摘要： PROBLEM TO BE SOLVED: To always stably estimate a noise power by excluding the influence of a transmitting error or the like and to perform optimal suppressing processing corresponding to the character of a frame even when the frame power of an input signal is small. SOLUTION: In the case of estimating a noise power E in a noise power estimating part 24, when a difference (min-noise) between a detected minimum frame power value min and an estimated noise power value 'noise' preceding for one block is >= a threshold '-2', the new estimated noise power value E is updated to the minimum frame power value min detected in the present block and when the difference (min-noise) is

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