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61. 发明申请

US20060074644A1 Voice code conversion apparatus 失效
公开(公告)号：US20060074644A1
公开(公告)日：2006-04-06
申请号：US11284332
申请日：2005-11-21
申请人： Masanao Suzuki , Yasuji Ota , Yoshiteru Tsuchina
发明人： Masanao Suzuki , Yasuji Ota , Yoshiteru Tsuchina
IPC分类号： G10L19/12
CPC分类号： G10L19/16 , G10L19/12
摘要： Disclosed is a voice code conversation apparatus to which voice code obtained by a first voice encoding method is input for converting this voice code to voice code of a second voice encoding method. The apparatus includes a code separating unit for separating, from the voice code based upon the first voice encoding method, codes of a plurality of components necessary to reconstruct a voice signal, code converters for dequantizing the codes of each of the components and then quantizing the dequantized values by the second voice encoding method to thereby generate codes, and a code multiplexer for multiplexing the codes output from respective ones of the code converters and transmitting voice code based upon the second voice encoding method.

62. 发明申请

US20050278174A1 Audio coder 失效
标题翻译：音频编码器
公开(公告)号：US20050278174A1
公开(公告)日：2005-12-15
申请号：US11185302
申请日：2005-07-20
申请人： Hitoshi Sasaki , Yasuji Ota
发明人： Hitoshi Sasaki , Yasuji Ota
IPC分类号： G10L19/02 , H03M7/38
CPC分类号： G10L19/032
摘要： An audio coder that improves audio quality by reducing a quantization error. When a code corresponding to a sampled value of an audio signal is determined, a candidate code storage section stores all combinations of candidate codes in a neighborhood interval of the sampled value. A local decoder generates reproduced signals by decoding the codes stored in the candidate code storage section. An error evaluation section calculates, for each candidate code, a sum of squares of differentials between input sampled values and reproduced signals, detects a combination of candidate codes by which a smallest sum is obtained, that is to say, which minimizes a quantization error, and outputs a code included in the detected combination of candidate codes.
摘要翻译：一种通过减少量化误差来提高音频质量的音频编码器。当确定与音频信号的采样值相对应的代码时，候选代码存储部分将候选代码的所有组合存储在采样值的邻域间隔中。本地解码器通过解码存储在候选代码存储部分中的代码来产生再现信号。误差评估部分针对每个候选代码计算输入采样值和再现信号之间的差分的平方和，检测获得最小和的候选代码的组合，即将量化误差最小化的组合，并且输出检测到的候选代码的组合中包括的代码。

63. 发明申请

US20050166124A1 Voice packet loss concealment device, voice packet loss concealment method, receiving terminal, and voice communication system 有权
标题翻译：语音包丢失隐藏设备，语音丢包隐藏方法，接收终端和语音通信系统
公开(公告)号：US20050166124A1
公开(公告)日：2005-07-28
申请号：US11065416
申请日：2005-02-24
申请人： Yoshiteru Tsuchinaga , Yasuji Ota , Masanao Suzuki , Masakiyo Tanaka , Miyuki Shirakawa
发明人： Yoshiteru Tsuchinaga , Yasuji Ota , Masanao Suzuki , Masakiyo Tanaka , Miyuki Shirakawa
IPC分类号： G01L19/00 , G10L19/00 , H04L12/56 , H04L29/06 , H04M7/00 , H04J3/16 , H03M13/00 , H04J3/22
CPC分类号： G10L19/005 , H04L29/06027 , H04L65/607 , H04L65/80 , H04M7/006
摘要： In a voice packet communication system, a voice packet loss concealment device compensates for the deterioration of voice quality due to voice packet loss. In the device, a detecting section detects a loss of a voice packet and outputting information; an estimating section estimates the voice characteristics of the lost segment using a pre-loss voice packet received before the lost segment or a post-loss voice packet received after the lost segment; a pitch signal generating section generates a pitch signal having the voice characteristics; and a lost packet generating section outputs the pitch signal generated by the pitch signal generating section, with the voice characteristics estimated by the estimating section, which allows abnormal noise and feeling of mute, subjective deterioration of naturalness and continuity to be improved, and the voice packet loss concealment to be further improved.
摘要翻译：在语音分组通信系统中，语音分组丢失隐藏装置补偿语音分组丢失导致的语音质量的恶化。在该装置中，检测部检测出语音分组的丢失并输出信息; 估计部分使用在丢失段之前接收到的丢失前话音分组或在丢失分段之后接收到的丢失后语音分组来估计丢失分段的语音特性; 音调信号产生部分产生具有语音特征的音调信号; 并且丢失分组产生部分输出由音调信号产生部分产生的音调信号与由估计部分估计的语音特征，其允许异常噪声和静音感觉，自然性和连续性的主观恶化被改善，并且语音丢包隐藏进一步提高。

64. 发明授权

US5274741A Speech coding apparatus for separately processing divided signal vectors 失效
标题翻译：用于分开处理分频信号矢量的语音编码装置
公开(公告)号：US5274741A
公开(公告)日：1993-12-28
申请号：US515430
申请日：1990-04-27
申请人： Tomohiko Taniguchi , Yoshinori Tanaka , Yasuji Ota , Fumio Amano , Shigeyuki Unagami
发明人： Tomohiko Taniguchi , Yoshinori Tanaka , Yasuji Ota , Fumio Amano , Shigeyuki Unagami
IPC分类号： G10L11/00 , G10L15/02 , G10L19/00 , G10L19/02 , G10L19/06 , H03M1/12 , H03M7/30 , G10L9/02
CPC分类号： G10L19/038 , G10L19/06 , H03M7/3082
摘要： A speech coding apparatus includes multipliers and prediction filters which successively process a plurality of signal vectors obtained from an index 2.sup.M and dimension N code book to obtain a reproduced speech signal. Error detectors are provided which find the error between the input speech signal and reproduced speech signal. Evaluators are also provided which calculate the optimum signal vectors giving the smallest errors. The multipliers are connected to a reduced code book, which is constituted of n number of code book blocks of index 2.sup.M/n and dimension N/n (where n is an integer of two or more). There are n number of multipliers, n number of prediction filters, n number of error detectors, and n number of evaluators corresponding to the code book blocks.

65. 发明授权

US08264981B2 Inter-multipoint voice conversation apparatus 有权
标题翻译：多点间语音通话装置
公开(公告)号：US08264981B2
公开(公告)日：2012-09-11
申请号：US12767925
申请日：2010-04-27
申请人： Ryosuke Hamasaki , Yasuji Ota
发明人： Ryosuke Hamasaki , Yasuji Ota
IPC分类号： G01R31/08
CPC分类号： H04M9/08 , G10L25/69
摘要： A quality level analysis unit 504 specifies a coding method, communication line conditions, and a quality level, such as an S/N ratio and the like, of voices of an input channel, received by a corresponding receiving unit 501. A channel allocation/mixing unit 502 controls the allocation or mixing of voices of respective input channels to or into respective output channels 503 (output units 505) on the basis of the results of analysis by the quality level analysis unit 504. Consequently, loud speakers from which poor quality voices and good quality voices are output can be separated from one another, thus improving the total intelligibility of received voices.
摘要翻译：质量等级分析单元504指定由相应的接收单元501接收的输入信道的语音的编码方法，通信线路条件和诸如S / N比等的质量等级。信道分配/ 混合单元502基于质量水平分析单元504的分析结果控制相应输入通道的声音分配或混合到相应的输出通道503（输出单元505）中。因此，质量差的扬声器声音和优质声音的输出可以相互分离，从而提高了接收到的声音的总体清晰度。

66. 发明申请

US20100017201A1 Data embedding apparatus, data extraction apparatus, and voice communication system 审中-公开
标题翻译：数据嵌入装置，数据提取装置和语音通信系统
公开(公告)号：US20100017201A1
公开(公告)日：2010-01-21
申请号：US12585153
申请日：2009-09-04
申请人： Masakiyo Tanaka , Yasuji Ota , Masanao Suzuki
发明人： Masakiyo Tanaka , Yasuji Ota , Masanao Suzuki
IPC分类号： G10L19/00 , G10L11/04
CPC分类号： G10L19/018
摘要： A voice communication system having, on a transmission side, a data embedding apparatus provided with an embedding allowability judgment unit (41) calculating an analysis parameter with respect to an input audio signal and judging based on the analysis parameter whether there is a part of the input audio signal allowing embedding of data and an embedding unit (42) outputting an audio signal having the data embedded in the allowable part when the result of judgment of the embedding allowability judgment unit is data can be embedded and outputting the audio signal as is when the result of judgment of the embedding allowability judgment unit is data cannot be embedded and having, on the receiving side, a data extraction apparatus provided with a data extraction apparatus extracting data by a reverse operation is provided, whereby data can be embedded in voice signals without causing an unallowable change in audio quality and a drop in amount of embedded data due to embedding data in parts unsuitable for embedding data.
摘要翻译：一种语音通信系统，在发送侧具有数据嵌入装置，该数据嵌入装置设置有可嵌入允许判断单元，根据输入音频信号计算分析参数，并根据分析参数判断是否存在部分输入音频信号允许嵌入数据;以及嵌入单元（42），当嵌入允许判断单元的判断结果为数据时，输出具有嵌入在允许部分中的数据的音频信号，并且按照嵌入允许判断单元的判断结果是数据不能被嵌入，并且在接收侧具有提供通过反向操作提取数据的数据提取装置的数据提取装置，从而可以将数据嵌入在语音信号中而不会导致音频质量的不允许的改变以及由于嵌入数据而导致的嵌入式数据量的下降不适合嵌入数据。

67. 发明授权

US07590532B2 Voice code conversion method and apparatus 有权
标题翻译：语音代码转换方法和装置
公开(公告)号：US07590532B2
公开(公告)日：2009-09-15
申请号：US10307869
申请日：2002-12-02
申请人： Masanao Suzuki , Yasuji Ota , Yoshiteru Tsuchinaga , Masakiyo Tanaka
发明人： Masanao Suzuki , Yasuji Ota , Yoshiteru Tsuchinaga , Masakiyo Tanaka
IPC分类号： G10L19/00
CPC分类号： G10L19/173
摘要： It is so arranged that a voice code can be converted even between voice encoding schemes having different subframe lengths. A voice code conversion apparatus demultiplexes a plurality of code components (Lsp1, Lag1, Gain1, Cb1), which are necessary to reconstruct a voice signal, from voice code in a first voice encoding scheme, dequantizes the codes of each of the components and converts the dequantized values of code components other than an algebraic code component to code components (Lsp2, Lag2, Gp2) of a voice code in a second voice encoding scheme. Further, the voice code conversion apparatus reproduces voice from the dequantized values, dequantizes codes that have been converted to codes in the second voice encoding scheme, generates a target signal using the dequantized values and reproduced voice, inputs the target signal to an algebraic code converter and obtains an algebraic code (Cb2) in the second voice encoding scheme.
摘要翻译：即使在具有不同子帧长度的语音编码方案之间也可以转换语音代码。声音码转换装置从第一语音编码方案中的语音码解复用重构语音信号所需的多个代码分量（Lsp1，Lag1，Gain1，Cb1），对每个分量的代码进行去量化，并将其转换除了代数代码分量之外的代码分量的解量化值，以对第二语音编码方案中的语音代码的分量（Lsp2，Lag2，Gp2）进行编码。此外，语音代码转换装置从去量化值再现语音，对已经转换为第二语音编码方案中的代码的代码进行解量化，使用去量化值和再现语音生成目标信号，将目标信号输入到代数码转换器并获得第二语音编码方案中的代数码（Cb2）。

68. 发明授权

US07092875B2 Speech transcoding method and apparatus for silence compression 有权
标题翻译：用于静音压缩的语音转码方法和装置
公开(公告)号：US07092875B2
公开(公告)日：2006-08-15
申请号：US10108153
申请日：2002-03-27
申请人： Yoshiteru Tsuchinaga , Yasuji Ota , Masanao Suzuki
发明人： Yoshiteru Tsuchinaga , Yasuji Ota , Masanao Suzuki
IPC分类号： G10L11/02 , G10L19/12 , H04J3/22
CPC分类号： G10L19/173 , G10L19/012
摘要： A first CN code (silence code) obtained by encoding a silence signal, which is contained in an input signal, by a silence compression function of a first speech encoding scheme is transcoded to a second CN code of a second speech encoding scheme without decoding the first CN code to a CN signal. For example, the first CN code is demultiplexed into a plurality of first element codes by a code demultiplexer, the first element codes are each transcoded to a plurality of second element codes that constitute the second CN code, and the second element codes obtained by this transcoding are multiplexed to output the second CN code.
摘要翻译：通过第一语音编码方案的静音压缩函数对包含在输入信号中的静音信号进行编码而获得的第一CN码（静音码）被转码为第二语音编码方案的第二CN码，而不解码第一个CN码到CN信号。例如，第一CN码通过码分离器解复用为多个第一单元编码，第一单元代码被转码为构成第二CN代码的多个第二单元代码，并且通过该代码获得的第二单元代码代码转换被多路复用以输出第二CN码。

69. 发明授权

US07016831B2 Voice code conversion apparatus 失效
公开(公告)号：US07016831B2
公开(公告)日：2006-03-21
申请号：US09818355
申请日：2001-03-27
申请人： Masanao Suzuki , Yasuji Ota , Yoshiteru Tsuchinaga
发明人： Masanao Suzuki , Yasuji Ota , Yoshiteru Tsuchinaga
IPC分类号： G10L19/12 , G10L19/14
CPC分类号： G10L19/16 , G10L19/12
摘要： Disclosed is a voice code conversation apparatus to which voice code obtained by a first voice encoding method is input for converting this voice code to voice code of a second voice encoding method. The apparatus includes a code separating unit for separating, from the voice code based upon the first voice encoding method, codes of a plurality of components necessary to reconstruct a voice signal, code converters for dequantizing the codes of each of the components and then quantizing the dequantized values by the second voice encoding method to thereby generate codes, and a code multiplexer for multiplexing the codes output from respective ones of the code converters and transmitting voice code based upon the second voice encoding method.

70. 发明申请

US20050165608A1 Voice enhancement device 有权
标题翻译：语音增强设备
公开(公告)号：US20050165608A1
公开(公告)日：2005-07-28
申请号：US11060188
申请日：2005-02-17
申请人： Masanao Suzuki , Masakiyo Tanaka , Yasuji Ota , Yoshiteru Tsuchinaga
发明人： Masanao Suzuki , Masakiyo Tanaka , Yasuji Ota , Yoshiteru Tsuchinaga
IPC分类号： G10L13/04
CPC分类号： G10L19/06 , G10L21/0364
摘要： A voice intensifier capable of reducing abrupt changes in the amplification factor between frames and realizing excellent sound quality with less noise feeling by dividing input voices into the sound source characteristic and the vocal tract characteristic, so as to individually intensify the sound source characteristic and the vocal tract characteristic and then synthesize them before being output. The voice intensifier comprises a signal separation unit for separating the input sound signal into the sound source characteristic and the vocal tract characteristic, a characteristic extraction unit for extracting characteristic information from the vocal tract characteristic, a corrective vocal tract characteristic calculation unit for obtaining vocal tract characteristic correction information from the vocal tract characteristic and the characteristic information, a vocal tract characteristic correction unit for correcting the vocal tract characteristic by using the vocal tract characteristic correction information, and a signal synthesizing means for synthesizing the corrective vocal tract characteristic from the vocal tract characteristic correction unit and the sound source characteristic, so that the sound synthesized by the signal synthesizing means is output.
摘要翻译：一种语音增强器，其能够通过将输入声音分解成声源特性和声道特性来减少帧之间的放大系数的突然变化，并且通过较少的噪音感觉实现优良的音质，从而单独加强声源特性和声带然后在输出之前进行合成。语音增强器包括：信号分离单元，用于将输入声音信号分离成声源特征和声道特征;特征提取单元，用于从声道特征中提取特征信息;矫正声道特征计算单元，用于获得声道来自声道特征和特征信息的特征校正信息，通过使用声道特征校正信息来校正声道特征的声道特征校正单元，以及用于从声道合成矫正声道特征的信号合成装置特征校正单元和声源特性，从而输出由信号合成装置合成的声音。

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