CODING DEVICE, DECODING DEVICE, AND METHODS THEREOF
    1.
    发明申请
    CODING DEVICE, DECODING DEVICE, AND METHODS THEREOF 有权
    编码装置,解码装置及其方法

    公开(公告)号:US20130132099A1

    公开(公告)日:2013-05-23

    申请号:US13814597

    申请日:2011-11-08

    IPC分类号: G10L19/008

    摘要: Provided are a coding device, a decoding device, and methods thereof, with which it is possible to implement high sound quality coding and decoding in layered coding (scalable coding or embedded coding) wherein each layer comprises a plurality of bit rates (multi-rate). In the coding device (100), a feature analysis unit (101) extracts feature values of an input signal. Then a bit rate determination unit (102) determines, on the basis of the feature values of the input signal, a combination of a coding rate (low region coding rate) of a low region signal coding unit (104) which carries out coding of a low region part of the input signal and a coding rate (high region coding rate) of a high region signal coding unit (105) which carries out coding of a high region part of the input signal.

    摘要翻译: 提供了一种编码装置,解码装置及其方法,其可以在分层编码(可伸缩编码或嵌入编码)中实现高音质编码和解码,其中每层包括多个比特率(多速率 )。 在编码装置(100)中,特征分析部(101)提取输入信号的特征值。 然后,比特率确定单元(102)基于输入信号的特征值,确定执行编码的低区域信号编码单元(104)的编码率(低区域编码率) 输入信号的低区域部分和执行输入信号的高区域部分的编码的高区域信号编码单元(105)的编码率(高区域编码率)。

    Coding device, decoding device, and methods thereof
    2.
    发明授权
    Coding device, decoding device, and methods thereof 有权
    编码装置,解码装置及其方法

    公开(公告)号:US09373332B2

    公开(公告)日:2016-06-21

    申请号:US13814597

    申请日:2011-11-08

    摘要: Provided are a coding device, a decoding device, and methods thereof, with which it is possible to implement high sound quality coding and decoding in layered coding (scalable coding or embedded coding) wherein each layer comprises a plurality of bit rates (multi-rate). In the coding device (100), a feature analysis unit (101) extracts feature values of an input signal. Then a bit rate determination unit (102) determines, on the basis of the feature values of the input signal, a combination of a coding rate (low region coding rate) of a low region signal coding unit (104) which carries out coding of a low region part of the input signal and a coding rate (high region coding rate) of a high region signal coding unit (105) which carries out coding of a high region part of the input signal.

    摘要翻译: 提供了一种编码装置,解码装置及其方法,其可以在分层编码(可伸缩编码或嵌入编码)中实现高音质编码和解码,其中每层包括多个比特率(多速率 )。 在编码装置(100)中,特征分析部(101)提取输入信号的特征值。 然后,比特率确定单元(102)基于输入信号的特征值,确定执行编码的低区域信号编码单元(104)的编码率(低区域编码率) 输入信号的低区域部分和执行输入信号的高区域部分的编码的高区域信号编码单元(105)的编码率(高区域编码率)。

    ENCODER, DECODER, AND METHOD THEREFOR
    3.
    发明申请
    ENCODER, DECODER, AND METHOD THEREFOR 有权
    编码器,解码器及其方法

    公开(公告)号:US20110307248A1

    公开(公告)日:2011-12-15

    申请号:US13203122

    申请日:2010-02-25

    IPC分类号: H04L27/00 G10L21/00

    CPC分类号: G10L19/0204 G10L21/038

    摘要: Provided is an encoder which can effectively encode/decode spectrum data of a broad frequency signal in a high frequency range, can dramatically reduce the number of the arithmetic operations to be performed, and can improve the quality of the decoded signal. The encoder comprises a first layer coding unit (202) which encodes an input signal in a low frequency range below a predetermined frequency to generate first coded information, a first layer decoding unit (203) which decodes the first coded information to generate a decoded signal, and a second layer coding unit (206) which splits the input signal in a high frequency range above a predetermined frequency, into a plurality of sub-bands, presumes the respective sub-hands from the input signal or decoded signal, partially selects a spectrum component within each sub-band, and calculates an amplitude adjustment parameter used to adjust the amplitude of the selected spectrum component to thereby generate second coding information.

    摘要翻译: 提供了能够在高频范围内有效地编码/解码宽频信号的频谱数据的编码器,可以显着地减少要执行的算术运算的数量,并且可以提高解码信号的质量。 编码器包括对低于预定频率的低频范围内的输入信号进行编码以产生第一编码信息的第一层编码单元(202),对第一编码信息进行解码以产生解码信号的第一层解码单元(203) ,以及将高于预定频率的高频范围内的输入信号分割成多个子带的第二层编码单元(206),从输入信号或解码信号中假设相应的副手,部分地选择 并且计算用于调整所选择的频谱分量的振幅的幅度调整参数,从而生成第二编码信息。

    Scalable decoding apparatus and scalable encoding apparatus
    4.
    发明授权
    Scalable decoding apparatus and scalable encoding apparatus 有权
    可扩展解码装置和可扩展编码装置

    公开(公告)号:US07983904B2

    公开(公告)日:2011-07-19

    申请号:US11718437

    申请日:2005-11-02

    IPC分类号: G10L19/14

    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 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. Using amplitude-adjusted first layer decoded signal spectrum received from the amplitude adjusting part, the pseudo-spectrum generating part generates and outputs a pseudo-spectrum of high frequencies to a scaling part. The scaling part scales the spectrum received from the pseudo-spectrum generating part and then outputs it to an adder.

    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,然后将调幅后的第一层解码信号频谱输出到伪 - 频谱产生部分。 使用从振幅调整部接收到的经调幅的第一层解码信号频谱,伪频谱生成部生成并输出高频的伪频谱到缩放部。 缩放部分缩放从伪频谱生成部分接收到的频谱,然后将其输出到加法器。

    Scalable encoding device, scalable decoding device, and method thereof
    5.
    发明授权
    Scalable encoding device, scalable decoding device, and method thereof 有权
    可扩展编码装置,可扩展解码装置及其方法

    公开(公告)号:US07904292B2

    公开(公告)日:2011-03-08

    申请号:US11576264

    申请日:2005-09-28

    IPC分类号: G10L19/12 G10L19/00

    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CH1和第二信道信号CH2的平均值作为单声道信号M.用于单声道信号的CELP编码器对单声道信号M进行CELP编码,将获得的编码 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CH2,第一声道信号编码器使第一声道信号CH1至CELP编码器使第一声道信号CH1的编码失真和第二声道信号CH1的编码失真之和最小化 通道信号CH2。

    Scalable Encoding Device, Scalable Decoding Device, and Method Thereof
    6.
    发明申请
    Scalable Encoding Device, Scalable Decoding Device, and Method Thereof 有权
    可扩展编码设备,可扩展解码设备及其方法

    公开(公告)号:US20080255833A1

    公开(公告)日:2008-10-16

    申请号:US11576264

    申请日:2005-09-28

    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。

    Scalable Decoding Apparatus and Scalable Encoding Apparatus
    7.
    发明申请
    Scalable Decoding Apparatus and Scalable Encoding Apparatus 有权
    可扩展解码装置和可扩展编码装置

    公开(公告)号:US20080126082A1

    公开(公告)日:2008-05-29

    申请号:US11718437

    申请日:2005-11-02

    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)。

    Voice coding device, voice decoding device, voice coding method and voice decoding method
    8.
    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

    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)。

    SPECTRAL SMOOTHING DEVICE, ENCODING DEVICE, DECODING DEVICE, COMMUNICATION TERMINAL DEVICE, BASE STATION DEVICE, AND SPECTRAL SMOOTHING METHOD
    9.
    发明申请
    SPECTRAL SMOOTHING DEVICE, ENCODING DEVICE, DECODING DEVICE, COMMUNICATION TERMINAL DEVICE, BASE STATION DEVICE, AND SPECTRAL SMOOTHING METHOD 有权
    光谱平滑装置,编码装置,解码装置,通信终端装置,基站装置和光谱平滑方法

    公开(公告)号:US20110137643A1

    公开(公告)日:2011-06-09

    申请号:US13057454

    申请日:2009-08-07

    IPC分类号: G10L19/02

    摘要: Disclosed is a spectral smoothing device with a structure whereby smoothing is performed after a nonlinear conversion has been performed for a spectrum calculated from an audio signal, and with which the amount of processing calculation is significantly reduced while maintaining excellent audio quality. With this spectral smoothing device, a sub band division unit (102) divides an input spectrum into multiple sub bands; a representative value calculation unit (103) calculates a representative value for each sub band using an arithmetic mean and a geometric mean; with respect to each representative value, a nonlinear conversion unit (104) performs a nonlinear conversion the characteristic of which is further emphasized as the value increases; and a smoothing unit (105) that smoothes the representative value which has undergone the nonlinear conversion for each sub band, at the frequency domain.

    摘要翻译: 公开了一种光谱平滑装置,其具有在对从音频信号计算出的频谱进行非线性转换之后进行平滑处理,并且在保持优良音频质量的同时显着减少处理计算量的结构。 利用该频谱平滑装置,子带分割单元(102)将输入频谱划分成多个子频带; 代表值计算单元(103)使用算术平均值和几何平均值计算每个子带的代表值; 对于每个代表值,非线性转换单元(104)执行非线性转换,其特性随着值的增加被进一步强调; 以及平滑化单元(105),其以频域对每个子带进行了非线性转换的代表值进行平滑化。

    Stereo signal encoding device, stereo signal decoding device, stereo signal encoding method, and stereo signal decoding method
    10.
    发明授权
    Stereo signal encoding device, stereo signal decoding device, stereo signal encoding method, and stereo signal decoding method 有权
    立体声信号编码装置,立体声信号解码装置,立体声信号编码方法和立体声信号解码方法

    公开(公告)号:US09514757B2

    公开(公告)日:2016-12-06

    申请号:US13882750

    申请日:2011-10-17

    IPC分类号: H04R5/00 G10L19/008 G10L19/22

    CPC分类号: G10L19/008 G10L19/22

    摘要: A stereo signal encoding device is provided that enables a lower bitrate without decreasing quality when applying an intermittent transmission technique to a stereo signal. A stereo encoding unit generates first stereo encoded data by encoding the stereo signal when the stereo signal of the current frame is an audio section. A stereo DTX encoding unit is a means for encoding the stereo signal when the stereo signal of the current frame is a non-audio section. The stereo DTX encoding unit generates second stereo encoded data by encoding each of a monaural signal spectral parameter that is a spectral parameter of a monaural signal generated using the first channel signal and the second channel signal, first channel signal information relating to the first channel signal, and second channel signal information relating to the second channel signal.

    摘要翻译: 提供一种立体声信号编码装置,当将间歇传输技术应用于立体声信号时,能够实现较低的比特率而不降低质量。 当当前帧的立体声信号是音频部分时,立体声编码单元通过对立体声信号进行编码来产生第一立体声编码数据。 立体声DTX编码单元是当当前帧的立体声信号是非音频部分时对立体声信号进行编码的装置。 立体声DTX编码单元通过对作为使用第一声道信号和第二声道信号产生的单声道信号的频谱参数的单声道信号频谱参数进行编码,生成第二立体声编码数据,与第一声道信号有关的第一声道信号信号 ,以及与第二信道信号相关的第二信道信号信息。