-
公开(公告)号：US20100169081A1
公开(公告)日：2010-07-01
申请号：US12517956
申请日：2007-12-12
CPC分类号： G10L19/0204 , G10L19/0212 , G10L19/038 , G10L19/083 , G10L19/24
摘要： An encoding device includes: a frequency region converter which converts an inputted audio signal into a frequency region; a band selector which selects a quantization object band from a plurality of sub bands obtained by dividing the frequency region; and a shape quantizer which quantizes the shape of the frequency region parameter of the quantization object band. When a prediction encoding presence/absence determiner determines that the number of common sub bands between the quantization object band and the quantization object band selected in the past is not smaller than a predetermined value, a gain quantizer performs prediction encoding on the gain of the frequency region parameter of the quantization object band. When the number of common sub bands is smaller than the predetermined value, the gain quantizer non-predictively encodes the gain of the frequency region parameter of the quantization object band.
摘要翻译： 编码装置包括：频率区域转换器，其将输入的音频信号转换成频率区域; 频带选择器，其从通过划分频率区域获得的多个子频带中选择量化对象频带; 以及量化量化对象带的频域参数的形状的形状量化器。 当预测编码存在/不存在确定器确定量化对象带和过去选择的量化对象带之间的公共子带的数量不小于预定值时，增益量化器对频率的增益执行预测编码 量化对象带的区域参数。 当公共子带的数量小于预定值时，增益量化器对量化对象带的频域参数的增益进行非预测编码。
-
公开(公告)号：US20100098199A1
公开(公告)日：2010-04-22
申请号：US12529212
申请日：2008-02-29
申请人： Masahiro Oshikiri
发明人： Masahiro Oshikiri
IPC分类号： H04B1/10
摘要： Provided is a decoding device which suppresses generation of an abnormal sound caused by a layer switch. The decoding device includes: a first layer decoding unit (202) which performs a decoding process on first layer encoded data so as to generate a first layer decoding signal; a second layer decoding unit (203) which performs a decoding process on second layer encoded data so as to generate a first layer decoding error signal; an adder (204) which adds the first layer decoding signal and the first layer decoding error signal so as to generate a second layer decoding signal; a switching unit (205) which performs switching between the first layer signal and the second layer decoding signal for output according to layer information; and a post-filter (206) which selects a control parameter corresponding to the respective layer information and performs a control parameter smoothing process so as to generate a smoothed control parameter and performs a filter process on the decoding signal from the switching unit (205) by using the generated smoothed control parameter.
摘要翻译： 提供了抑制由层切换引起的异常声音的产生的解码装置。 解码装置包括：第一层解码单元，对第一层编码数据执行解码处理，以产生第一层解码信号; 第二层解码单元，对第二层编码数据进行解码处理，生成第一层解码误差信号; 加法器（204），其将第一层解码信号和第一层解码误差信号相加以产生第二层解码信号; 切换单元，其根据层信息执行第一层信号和第二层解码信号之间的切换以进行输出; 以及后置滤波器（206），其选择与各层信息对应的控制参数，并执行控制参数平滑处理，以产生平滑的控制参数，并对来自切换单元（205）的解码信号执行滤波处理， 通过使用生成的平滑控制参数。
-
公开(公告)号：US20100017204A1
公开(公告)日：2010-01-21
申请号：US12528659
申请日：2008-02-29
IPC分类号： G10L19/12
CPC分类号： G10L19/00 , G10L19/005 , G10L19/02 , G10L19/0208 , G10L19/038 , G10L19/083 , G10L19/24 , G10L25/18
摘要： Provided is a voice encoding device which can accurately encode a spectrum shape of a signal having a strong tonality such as a vowel. The device includes: a sub-band constituting unit (151) which divides a first layer error conversion coefficient to be encoded into M sub-bands so as to generate M sub-band conversion coefficients; a shape vector encoding unit (152) which performs encoding on each of the M sub-band conversion coefficient so as to obtain M shape encoded information and calculates a target gain of each of the M sub-band conversion coefficients; a gain vector forming unit (153) which forms one gain vector by using M target gains; a gain vector encoding unit (154) which encodes the gain vector so as to obtain gain encoded information; and a multiplexing section unit (155) which multiplexes the shape encoded information with the gain encoded information.
摘要翻译： 提供了一种语音编码装置，其可以精确地编码具有强音调的信号的频谱形状，例如元音。 该装置包括：子带构成单元，将要编码的第一层错误转换系数划分为M个子带，以产生M个子带转换系数; 形状矢量编码单元，对M个子带转换系数中的每一个进行编码，以获得M个编码信息，并计算M个子带转换系数中的每一个的目标增益; 通过使用M个目标增益形成一个增益矢量的增益矢量形成单元（153） 增益矢量编码单元，其对所述增益矢量进行编码，以获得增益编码信息; 以及将形状编码信息与增益编码信息进行复用的多路复用单元（155）。
-
公开(公告)号：US20100017200A1
公开(公告)日：2010-01-21
申请号：US12528869
申请日：2008-02-29
CPC分类号： G10L19/00 , G10L19/005 , G10L19/0204 , G10L19/0208 , G10L19/0212 , G10L19/24
摘要： Disclosed is an encoding device which can accurately specify a band having a large error among all the bands by using a small calculation amount. The device includes: a first position identification unit (201) which uses a first layer error conversion coefficient indicating an error of decoding signal for an input signal so as to search for a band having a large error in a relatively wide bandwidth in all the bands of the input signal and generates first position information indicating the identified band; a second position identification unit (202) which searches for a target frequency band having a large error in a relatively narrow bandwidth in the band identified by the first position identification unit (201) and generates second position information indicating the identified target frequency band; and an encoding unit (203) which encodes a first layer decoding error conversion coefficient contained in the target frequency band. The first position information, the second position information, and the encoding unit are transmitted to a communication partner.
摘要翻译： 公开了一种编码装置，其可以通过使用小的计算量来精确地指定所有频带中的大误差的频带。 该装置包括：第一位置识别单元，其使用指示用于输入信号的解码信号的误差的第一层错误转换系数，以便在所有频带中搜索相对较宽带宽中具有较大误差的频带 并产生指示所识别的频带的第一位置信息; 第二位置识别单元，其在由所述第一位置识别单元识别的所述频带中搜索具有相对较窄带宽的大误差的目标频带，并产生指示所识别的目标频带的第二位置信息; 以及对包含在目标频带中的第一层解码错误转换系数进行编码的编码单元（203）。 第一位置信息，第二位置信息和编码单元被发送到通信伙伴。
-
公开(公告)号：US20100017198A1
公开(公告)日：2010-01-21
申请号：US12518371
申请日：2007-12-14
IPC分类号： G10L19/00
CPC分类号： G10L19/24 , G10L21/038
摘要： Disclosed is a decoding device and others capable of flexibly calculating high-band spectrum data with a high accuracy in accordance with an encoding band selected by an upper-node layer of the encoding side. In this device: a first layer decoding unit (202) decodes first layer encoded information to generate a first layer decoded signal; a second layer decoding unit (204) decodes second layer encoded information to generate a second layer decoded signal; a spectrum decoding unit (205) performs a band extension process by using the second layer decoded signal and the first layer decoded signal up-sampled in an up-sampling unit (203) so as to generate a all-band decoded signal; and a switch (206) outputs the first layer decoded signal or the all-band decoded signal according to the control information generated in a control unit (201).
摘要翻译： 公开了一种能够根据由编码侧的上层节点选择的编码频带，以高精度灵活地计算高频谱数据的解码装置等。 在该设备中：第一层解码单元（202）解码第一层编码信息以产生第一层解码信号; 第二层解码单元（204）对第二层编码信息进行解码以产生第二层解码信号; 频谱解码单元（205）通过使用第二层解码信号和在上采样单元（203）中被上采样的第一层解码信号来执行频带扩展处理，以便产生全频带解码信号; 开关（206）根据在控制单元（201）中生成的控制信息输出第一层解码信号或全频带解码信号。
-
26.发明申请公开(公告)号：US20080255833A1
公开(公告)日：2008-10-16
申请号：US11576264
申请日：2005-09-28
申请人： Michiyo Goto , Koji Yoshida , Hiroyuki Ehara , Masahiro Oshikiri
发明人： Michiyo Goto , Koji Yoshida , Hiroyuki Ehara , Masahiro Oshikiri
IPC分类号： G10L19/12
CPC分类号： G10L19/008 , G10L19/24
摘要： A scalable encoding device for realizing scalable encoding by CELP encoding of a stereo sound signal and improving the encoding efficiency. In this device, an adder and a multiplier obtain an average of a first channel signal CH1 and a second channel signal CH2 as a monaural signal M. A CELP encoder for a monaural signal subjects the monaural signal M to CELP encoding, outputs the obtained encoded parameter to outside, and outputs a synthesized monaural signal M′ synthesized by using the encoded parameter to a first channel signal encoder. By using the synthesized monaural signal M′ and the second channel signal CH2, the first channel signal encoder subjects the first channel signal CH1 to CELP encoding to minimize the sum of the encoding distortion of the first channel signal CH1 and the encoding distortion of the second channel signal CH2.
摘要翻译： 一种可扩展编码装置，用于通过立体声信号的CELP编码实现可分级编码，并提高编码效率。 在该装置中，加法器和乘法器获得第一信道信号CH 1和第二信道CH 2的平均值作为单声道信号M.用于单声道信号的CELP编码器使单声道信号M进行CELP编码， 获得编码参数到外部，并且将通过使用编码参数合成的合成单声道信号M'输出到第一声道信号编码器。 通过使用合成单声道信号M'和第二声道信号CH 2，第一声道信号编码器对第一声道信号CH 1进行CELP编码，使第一声道信号CH 1的编码失真和编码失真的和最小化 的第二信道信号CH 2。
-
公开(公告)号：US20080126082A1
公开(公告)日：2008-05-29
申请号：US11718437
申请日：2005-11-02
申请人： Hiroyuki Ehara , Masahiro Oshikiri , Koji Yoshida
发明人： Hiroyuki Ehara , Masahiro Oshikiri , Koji Yoshida
IPC分类号： G10L19/00
CPC分类号： G10L21/038 , G10L19/24
摘要： A scalable decoding apparatus capable of providing decoded audio signals of high quality having less degradation of a high frequency spectrum even when decoding audio signals by generating the high frequency spectrum by use of a low frequency spectrum. In the apparatus, an amplitude adjusting part (1211) uses different adjustment coefficients in accordance with the characteristic of first layer spectrum information to adjust the amplitude of a first layer decoded signal spectrum, and then outputs the amplitude-adjusted first layer decoded signal spectrum to a pseudo-spectrum generating part (1012). Using amplitude-adjusted first layer decoded signal spectrum received from the amplitude adjusting part (1211), the pseudo-spectrum generating part (1012) generates and outputs a pseudo-spectrum of high frequencies to a scaling part (1013). The scaling part (1013) scales the spectrum received from the pseudo-spectrum generating part (1012) and then outputs it to an adder (B).
摘要翻译： 即使在通过使用低频谱生成高频谱来解码音频信号的同时，也能够提供具有较低的高频谱劣化的高质量解码音频信号的可扩展解码装置。 在该装置中，振幅调整部（1211）根据第一层频谱信息的特性使用不同的调整系数来调整第一层解码信号频谱的振幅，然后将经调幅的第一层解码信号频谱输出到 伪频谱生成部（1012）。 使用从振幅调整部（1211）接收到的经调幅的第一层解码信号频谱，伪频谱生成部（1012）生成并将高频的伪频谱输出到缩放部（1013）。 缩放部分（1013）缩放从伪频谱生成部分（1012）接收的频谱，然后将其输出到加法器（B）。
-
公开(公告)号：US06704702B2
公开(公告)日：2004-03-09
申请号：US09726562
申请日：2000-12-01
申请人： Masahiro Oshikiri , Kimio Miseki , Masami Akamine
发明人： Masahiro Oshikiri , Kimio Miseki , Masami Akamine
IPC分类号： G10L1104
摘要： A speech encoding method, apparatus and program wherein an input speech signal is divided into a plurality of frames each having a predetermined length, each of the frames is subdivided into a plurality of subframes, a predictive pitch period of a subframe in a to-be-encoded current frame is obtained by using pitch periods of at least two frames of the current frame and past and future frames with respect to the current frame; a pitch period of a subframe in the current frame is obtained by using the predictive pitch period, a relative pitch pattern codebook storing a plurality of relative pitch patterns representing fluctuations in pitch periods of a plurality of subframes is prepared, and a change in pitch period of plural subframes is expressed with one relative pitch pattern selected from the relative pitch pattern codebook.
摘要翻译： 一种语音编码方法，装置和程序，其中输入语音信号被划分为具有预定长度的多个帧，每个帧被细分为多个子帧，子帧的预测音调周期 通过使用当前帧的至少两帧的音调周期和相对于当前帧的过去和未来帧来获得编码的当前帧; 通过使用预测音调周期来获得当前帧中的子帧的音调周期，准备存储表示多个子帧的音调周期的波动的多个相对音调模式的相对音调模式码本，并且音调周期的变化 由相对的音调图案码本中选择的一个相对音调图形来表示多个子帧。
-
29.发明授权Method for encoding and decoding a speech signal including background noise 失效用于对包括背景噪声的语音信号进行编码和解码的方法
公开(公告)号：US6167375A
公开(公告)日：2000-12-26
申请号：US39317
申请日：1998-03-16
申请人： Kimio Miseki , Masahiro Oshikiri , Tadashi Amada , Masami Akamine
发明人： Kimio Miseki , Masahiro Oshikiri , Tadashi Amada , Masami Akamine
CPC分类号： G10L19/012 , G10L19/02
摘要： A method for encoding speech wherein an input speech signal is separated by a component separator into a first component mainly constituted by speech and a second component mainly constituted by a background noise at each predetermined unit of time, a bit allocation selector selects bit allocation for each component based on the first and second components from among a plurality of predetermined candidates for bit allocation, a speech encoder and a noise encoder encode the first and second components from the component separator based on the bit allocation according to predetermined different methods for encoding, and a multiplexer multiplexes encoded data of the first and second components and information on the bit allocation and outputs them as transmitted encoded data.
摘要翻译： 一种编码语音的方法，其中输入语音信号由分量分离器分离成主要由语音构成的第一分量和主要由每个预定单位时间的背景噪声构成的第二分量，比特分配选择器选择每个 基于来自用于比特分配的多个预定候选中的第一和第二分量的分量，语音编码器和噪声编码器根据预定的不同编码方法基于比特分配对来自分量分离器的第一和第二分量进行编码，以及 复用器复用第一和第二分量的编码数据和关于比特分配的信息，并将其作为发送的编码数据输出。
-
30.发明授权Voice coding device, voice decoding device, voice coding method and voice decoding method 有权语音编码装置，语音解码装置，语音编码方式及语音解码方式公开(公告)号：US09264094B2
公开(公告)日：2016-02-16
申请号：US14123841
申请日：2012-05-25
IPC分类号： G10L19/00 , H04B1/66 , G10L19/24 , G10L19/02 , G10L21/038
CPC分类号： H04B1/667 , G10L19/02 , G10L19/0204 , G10L19/24 , G10L21/038
摘要： A voice coding device capable of preventing overall quality degradation even when the bit rate for coding is lowered. The voice coding device codes a wide band signal in a first layer, and codes an extended band signal whose frequency band is located in higher frequency than the wide band signal in an extended band layer. An adaptive band selection unit (301) selects a frequency band to be excluded from a coding object in the extended band layer or a frequency band whose energy is to be attenuated in the extended band layer. A band-limited signal generation unit (302) excludes, within the frequency band of an input signal, the frequency band selected by the adaptive band selection unit (301) from the coding object, or attenuates the energy of the frequency band selected by the adaptive band selection unit (301).
摘要翻译： 即使当编码的比特率降低时，能够防止整体质量劣化的语音编码装置。 语音编码装置对第一层中的宽带信号进行编码，并且对扩展频带信号进行编码，其频带位于比扩频带中的宽带信号更高的频带。 自适应频带选择单元（301）从扩展频带层中的编码对象或能量在扩展频带层中衰减的频带中选择要排除的频带。 频带限制信号生成单元（302）在输入信号的频带内从编码对象排除由自适应频带选择部（301）选择的频带，或者衰减由所述编码对象选择的频带的能量 自适应频带选择单元（301）。
-
-
-
-
-
-
-
-
-
搜索结果
138 条记录 (耗时 0.027 秒)
