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    • 54. 发明授权
    • Detecting transients to emphasize formant peaks
    • 检测瞬态以强调共振峰
    • US5953696A
    • 1999-09-14
    • US935695
    • 1997-09-23
    • Masayuki NishiguchiJun Matsumoto
    • Masayuki NishiguchiJun Matsumoto
    • G10L13/00G10L21/02G10L9/02
    • G10L21/0364G10L21/0264G10L25/15H04R2225/43
    • Nasalized sound effects during reproduction of low-pitch sounds are suppressed to produce playback sounds of high clarity. Amplitude data is processed with high range formant emphasis of crests and valleys of the envelope of the frequency spectrum on the high frequency range and with deepening of the valley of the frequency spectrum over the entire frequency range, above all, over the low to mid frequency range. Next, the amplitude data is processed for emphasizing the peak values of the formant of the voiced frame in the portion of the speech signal which is rising in magnitude and for unconditionally emphasizing the spectral envelope on the high frequency range. The voiced speech spectrum is generated by synthesizing the cosine wave based upon the emphasized amplitude data.
    • 在低声音的再现期间的鼻音化效果被抑制以产生高清晰度的播放声音。 振幅数据以高频范围内的频谱包络的​​波峰和波谷的高范围共振峰强化处理,并且在整个频率范围内的频谱范围的深度越来越高,尤其是低频到中频 范围。 接下来,处理振幅数据,以强调在幅度上升的语音信号部分中的有声帧的共振峰的峰值以及无条件地强调高频范围上的频谱包络。 通过基于强调幅度数据合成余弦波来产生浊音语音频谱。
    • 55. 发明授权
    • Voice encoding method and voice decoding method
    • 语音编码方式和语音解码方式
    • US5473727A
    • 1995-12-05
    • US146580
    • 1993-11-01
    • Masayuki NishiguchiRyoji WakatsukiJun MatsumotoShinobu Ono
    • Masayuki NishiguchiRyoji WakatsukiJun MatsumotoShinobu Ono
    • G10L19/02G10L11/06G10L19/00H03M13/35G10L5/00
    • G10L19/005G10L19/10G10L25/93
    • A compressed digital speech signal is encoded to provide a transmission error-resistant transmission signal. The compressed speech signal is derived from a digital speech signal by performing a pitch search on a block obtained by dividing the speech signal in time to provide pitch information for the block. The block of the speech signal is orthogonally transformed to provide spectral data, which is divided by frequency into plural bands in response to the pitch information. A voiced/unvoiced sound discrimination generates voiced/-unvoiced (V/UV) information indicating whether the spectral data in each of the plural bands represents a voiced or an unvoiced sound. The spectral data in the plural bands are interpolated to provide spectral amplitudes for a predetermined number of bands, independent of the pitch. Hierarchical vector quantizing is applied to the spectral amplitudes to generate upper-layer indices, representing an overview of the spectral amplitudes, and lower-layer indices, representing details of the spectral amplitudes. CRC error detection coding is applied to the upper-layer indices, the pitch information, and the V/UV information to generate CRC codes. Convolution coding for error correction is applied to the upper-layer indices, the higher-order bits of the lower-layer indices, the pitch information, the V/UV information, and the CRC codes. The convolution-coded quantities from two blocks of the speech signal are then interleaved in a frame of the transmission signal, together with the lower-order bits of the respective lower-layer indices.
    • 对压缩的数字语音信号进行编码,以提供传输错误传输信号。 通过对通过对语音信号进行时间分割获得的块来执行音调搜索,从数字语音信号导出压缩语音信号,以提供块的音调信息。 语音信号的块被正交变换以提供频谱数据,频谱数据响应于音调信息被频率划分成多个频带。 有声/无声的声音识别产生指示多个频带中的每一个中的频谱数据是否表示有声或无声的声音/未发音(V / UV)信息。 对多个频带中的频谱数据进行插值,以提供与频率无关的预定数量频带的频谱幅度。 层次矢量量化被应用于频谱幅度以产生表示频谱幅度的概览的上层索引,以及表示频谱幅度细节的下层索引。 将CRC错误检测编码应用于上层索引,音调信息和V / UV信息以产生CRC码。 用于纠错的卷积编码被应用于上层索引,下层索引的高阶比特,音调信息,V / UV信息和CRC码。 然后,将来自语音信号的两个块的卷积编码量与发送信号的帧一起与各个下层索引的低位比特进行交织。
    • 58. 发明授权
    • Signal processing method and apparatus, signal processing program, and recording medium
    • 信号处理方法和装置,信号处理程序和记录介质
    • US07720235B2
    • 2010-05-18
    • US10273529
    • 2002-10-18
    • Mototsugu AbeMasayuki Nishiguchi
    • Mototsugu AbeMasayuki Nishiguchi
    • H04B15/00
    • H04H60/37G10L19/02G11B27/102G11B27/28
    • A signal processing method divides a first signal of two signals to be compared in similarity into smaller regions, selects one of the regions, and calculates the correlation of the selected one with the other second signal. The method finds a time difference, an expansion factor, and a similarity in one region in which the maximum similarity as the square of the correlation is obtained, and performs integration in the position represented by the time difference and the expansion factor of values based on similarities. The method performs similar processing on all the regions, and evaluates similarity by, in a peak where the integrated value of similarities is a maximum, compares its magnitude with a threshold value. The region corresponding to the peak can be extracted.
    • 信号处理方法将要比较的两个信号的第一信号相似地划分为更小的区域,选择一个区域,并计算所选择的信号与另一个第二信号的相关性。 该方法在获得作为相关平方的最大相似度的一个区域中找到时间差,扩展因子和相似度,并且在由时间差表示的位置和基于 相似之处 该方法对所有区域执行类似的处理,并且通过在相似度的积分值为最大值的峰值中评估相似度,将其幅度与阈值进行比较。 可以提取与峰值相对应的区域。
    • 59. 发明授权
    • Method and apparatus for classifying signals, method and apparatus for generating descriptors and method and apparatus for retrieving signals
    • 用于分类信号的方法和装置,用于生成描述符的方法和装置以及用于检索信号的方法和装置
    • US07454329B2
    • 2008-11-18
    • US11287970
    • 2005-11-28
    • Mototsugu AbeMasayuki Nishiguchi
    • Mototsugu AbeMasayuki Nishiguchi
    • G10L15/00
    • G10L17/26
    • The input signal can be quickly and accurately classified and a descriptor can be generated according to the result of classification. Then, the input signal can be retrieved on the basis of the result of classification or the descriptor. A signal processing apparatus comprises a time block splitting section 3 for splitting an audio signal into blocks that are typically 1 second long, a feature extracting section 4 for extracting a characteristic quantity of 18 degrees on the signal attribute from the audio signal in each block and a vector quantizing section 5 for carrying out an operation of categorical classification for the audio signal of each block by means of a vector quantization technique that uses a VQ code book 8 and a characteristic vector formed from the characteristic quantity of 18 degrees. The vector quantizing section 5 outputs a classification label obtained as a result of the categorical classification and a descriptor indicating the reliability of the label. If a signal retrieving operation is conducted in the downstream, the result of the classification or the descriptor is used for the signal retrieval.
    • 可以快速,准确地分类输入信号,并根据分类结果生成描述符。 然后,可以基于分类结果或描述符来检索输入信号。 信号处理装置包括用于将音频信号分割成通常为1秒长的块的时间块分割部分3,用于从每个块中的音频信号中提取关于信号属性的18度的特征量的特征提取部分4,以及 矢量量化部分5,用于通过使用VQ码本8的矢量量化技术和由18度的特征量形成的特征矢量来执行每个块的音频信号的分类分类的操作。 矢量量化部5输出作为分类分类的结果而获得的分类标签和表示标签的可靠性的描述符。 如果在下游执行信号检索操作,则将分类结果或描述符用于信号检索。
    • 60. 发明申请
    • Detection Apparatus, Detection Method, and Computer Program
    • 检测装置,检测方法和计算机程序
    • US20080181492A1
    • 2008-07-31
    • US11861906
    • 2007-09-26
    • Mototsugu AbeMasayuki Nishiguchi
    • Mototsugu AbeMasayuki Nishiguchi
    • G06K9/00
    • H04N19/14
    • An apparatus for detecting a cut change based on a similarity between a first image and a second image, includes a unit for generating one of a luminance histogram and a color histogram of each of the first image and the second image, a unit for generating a spatial correlation image representing a correlation between spatial layouts of the first image and the second image, a unit for calculating a histogram similarity representing a similarity between the histogram of the first image and the histogram of the second image, a unit for calculating a spatial correlation image similarity representing a similarity between the spatial correlation image of the first image and the spatial correlation image of the second image, and a unit for determining whether a border between the first image and the second image is a cut change based on the histogram similarity and the spatial correlation image similarity.
    • 一种用于基于第一图像和第二图像之间的相似度检测切割变化的装置,包括用于生成第一图像和第二图像中的每一个的亮度直方图和颜色直方图之一的单元,用于生成 表示第一图像和第二图像的空间布局之间的相关性的空间相关图像,用于计算表示第一图像的直方图与第二图像的直方图之间的相似度的直方图相似度的单元,用于计算空间相关性的单元 表示第一图像的空间相关图像与第二图像的空间相关图像之间的相似度的图像相似度,以及用于基于直方图相似度确定第一图像和第二图像之间的边界是否为切割变化的单元,以及 空间相关图像相似度。