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公开(公告)号：US08719011B2
公开(公告)日：2014-05-06
申请号：US12529219
申请日：2008-02-29
IPC分类号： G10L21/00
CPC分类号： G10L19/038 , G10L19/10 , G10L25/18
摘要： Provided is an encoding device which can obtain a sound quality preferable for auditory sense even if the number of information bits is small. The encoding device includes a shape quantization unit (111) having: a section search unit (121) which searches for a pulse for each of bands into which a predetermined search section is divided; and a whole search unit (122) which performs search for a pulse over the entire search section. The shape of an input spectrum is quantized by a small number of pulse positions and polarities. A gain quantization unit (112) calculates a gain of the pulse searched by the shape quantization unit (111) and quantizes the gain for each of the bands.
摘要翻译： 提供一种编码装置，即使信息比特数较少，也可以获得听觉优先的声音质量。 编码装置包括形状量化单元（111），具有：搜索单元（121），搜索预定搜索区被分割成的每个频带的脉冲; 以及整个搜索单元（122），其执行搜索整个搜索部分的脉冲。 输入频谱的形状由少量的脉冲位置和极性量化。 增益量化单元（112）计算由形状量化单元（111）搜索的脉冲的增益，并对每个频带的增益进行量化。
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公开(公告)号：US20130339009A1
公开(公告)日：2013-12-19
申请号：US13993851
申请日：2011-12-14
IPC分类号： G10L19/12
摘要： Provided are a coding device, a communication processing device, and a coding method, whereby processing operation load (computational load) is significantly reduced for a configuration which computes either frame energy or sub-frame energy of an input signal, using auto-correlation operations, without causing a decline in the precision of either the frame energy or the sub-frame energy. In a coding device (101), a sub-frame energy computation unit (201) computes the sub-frame energy by substituting the sum of input signal auto-correlation operations in a first range with the sum of auto-correlation operations in a second range which differs at least partially from the first range.
摘要翻译： 提供了一种编码装置，通信处理装置和编码方法，由此对于使用自相关操作来计算输入信号的帧能量或子帧能量的配置，处理操作负荷（计算负荷）显着降低 ，而不会导致帧能量或子帧能量的精度下降。 在编码装置（101）中，子帧能量计算单元（201）通过将第一范围内的输入信号自相关运算的和与第二范围的自相关运算的总和相乘来计算子帧能量 至少部分地与第一范围不同的范围。
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公开(公告)号：US20080167865A1
公开(公告)日：2008-07-10
申请号：US10590417
申请日：2005-02-22
申请人： Tomofumi Yamanashi , Kaoru Sato , Toshiyuki Mori
发明人： Tomofumi Yamanashi , Kaoru Sato , Toshiyuki Mori
IPC分类号： G10L19/14
CPC分类号： G10L19/24
摘要： There is provided a communication device for effectively encoding an audio/music signal while maintaining a predetermined quality by controlling the transmission bit rate of the transmission side considering the use environment of the reception side. In this device, a transmission mode decision unit (101) detects an environment noise contained in the background of the audio/music signal in the input signal and decides the transmission mode controlling the transmission bit rate of the signal transmitted from a communication terminal device (150), which is a communication terminal of the partner side, according to the environment noise level. A signal decoding unit (103) decodes encoded information transmitted from the communication terminal device (150) via a transmission path (110) and outputs the obtained signal as an output signal. Here, the signal decoding unit (103) detects a transmission error by comparing the transmission mode information contained in the encoded information outputted from the transmission path (110), to the transmission mode information obtained by the transmission mode decision unit (101) while considering the transmission delay.
摘要翻译： 提供了一种用于通过根据接收侧的使用环境控制发送侧的传输比特率来保持预定质量而有效地对音频/音乐信号进行编码的通信装置。 在该装置中，发送模式决定部（101）检测输入信号中音频/音乐信号的背景中包含的环境噪声，并决定控制从通信终端装置发送的信号的发送比特率的发送模式（ 150），它是伙伴方的通信终端，根据环境噪声水平。 信号解码单元（103）经由传输路径（110）解码从通信终端装置（150）发送的编码信息，并将所获得的信号作为输出信号输出。 这里，信号解码单元（103）通过将从传输路径（110）输出的编码信息中包含的传输模式信息与由传输模式决定单元（101）获得的传输模式信息进行比较来检测传输错误，同时考虑 传输延迟。
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公开(公告)号：US20130176150A1
公开(公告)日：2013-07-11
申请号：US13822823
申请日：2011-09-07
IPC分类号： H03M7/00
摘要： An encoding device enables the amount of processing operations to be significantly reduced while minimizing deterioration in the quality of an output signal. This encoding device (101) encodes an input signal by determining the correlation between a first signal generated by using the input signal and a second signal generated by a predetermined method. An importance assessment unit (202) sets the importance of each of a plurality of processing units obtained by dividing the frames of the input signal. A CELP coder (203) performs sparse processing in which the amplitude value of a predetermined number of samples among multiple samples constituted by the first signal and/or the second signal in each processing unit is set to zero according to the importance that was set for each processing unit, and calculates the correlation between the first signal and the second signal, either of which was subjected to sparse processing.
摘要翻译： 编码装置使得可以显着减少处理操作量，同时最小化输出信号质量的劣化。 该编码装置（101）通过确定通过使用输入信号产生的第一信号和通过预定方法产生的第二信号之间的相关性来对输入信号进行编码。 重要性评估单元（202）设置通过划分输入信号的帧而获得的多个处理单元中的每个处理单元的重要性。 CELP编码器（203）执行稀疏处理，其中根据为每个处理单元中的第一信号和/或第二信号构成的多个样本中的预定数量样本的振幅值被设置为零，根据为 每个处理单元，并且计算第一信号和第二信号之间的相关性，其中任一个都进行稀疏处理。
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公开(公告)号：US08423371B2
公开(公告)日：2013-04-16
申请号：US12809150
申请日：2008-12-22
CPC分类号： G10L19/0204 , G10L21/038
摘要： An encoder capable of reducing the degradation of the quality of the decoded signal in the case of band expansion in which the high band of the spectrum of an input signal is estimated from the low band. In this encoder, a first layer encoder encodes an input signal and generates first encoded information, a first layer decoder decodes the first encoded information and generates a first decoded signal, a characteristic judger analyzes the intensity of the harmonic structure of the input signal and generates harmonic characteristic information representing the analysis result, and a second layer encoder changes, on the basis of the harmonic characteristic information, the numbers of bits allocated to parameters included in second encoded information created by encoding the difference between the input signal and the first decoded signal before creating the second information.
摘要翻译： 在频带扩展的情况下，能够降低解码信号的质量劣化的编码器，其中从低频段估计输入信号的频谱的高频带。 在该编码器中，第一层编码器编码输入信号并产生第一编码信息，第一层解码器解码第一编码信息并产生第一解码信号，特征判断器分析输入信号的谐波结构的强度并产生 表示分析结果的谐波特征信息，第二层编码器根据谐波特性信息，改变分配给包括在通过对输入信号和第一解码信号之间的差进行编码而产生的第二编码信息中的参数的比特数 在创建第二个信息之前。
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公开(公告)号：US20100332221A1
公开(公告)日：2010-12-30
申请号：US12918575
申请日：2009-03-13
CPC分类号： G10L21/038 , G10L19/18 , G10L19/24
摘要： It is possible to improve quality of a decoding signal in a band spread for estimating a high band from a low band of a decoding signal. A first layer encoding unit (202) encodes a lower band portion below a predetermined frequency of an input signal so as to generate first layer encoded information. A first layer decoding unit (203) decodes the first layer encoded information so as to generate a first layer demodulated signal. A second layer encoding unit (206) divides a high band portion higher than a predetermined frequency of an input signal into a plurality of sub-bands and estimates each of the sub-bands from the input signal or the first layer decoded signal by using the estimation result of the sub-band adjacent to the lower band side so as to generate second encoded information including the estimation results of the sub-bands.
摘要翻译： 可以提高从解码信号的低频带估计高频带的频带扩展中的解码信号的质量。 第一层编码单元（202）对输入信号的预定频率以下的低频带部分进行编码，以产生第一层编码信息。 第一层解码单元（203）对第一层编码信息进行解码，以产生第一层解调信号。 第二层编码单元（206）将高于输入信号的预定频率的高频带部分划分成多个子带，并且通过使用第二层编码单元从输入信号或第一层解码信号估计每个子带 估计与低频带侧相邻的子带的结果，以产生包括子频带的估计结果的第二编码信息。
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公开(公告)号：US08760323B2
公开(公告)日：2014-06-24
申请号：US13822823
申请日：2011-09-07
摘要： An encoding device enables the amount of processing operations to be significantly reduced while minimizing deterioration in the quality of an output signal. This encoding device (101) encodes an input signal by determining the correlation between a first signal generated by using the input signal and a second signal generated by a predetermined method. An importance assessment unit (202) sets the importance of each of a plurality of processing units obtained by dividing the frames of the input signal. A CELP coder (203) performs sparse processing in which the amplitude value of a predetermined number of samples among multiple samples constituted by the first signal and/or the second signal in each processing unit is set to zero according to the importance that was set for each processing unit, and calculates the correlation between the first signal and the second signal, either of which was subjected to sparse processing.
摘要翻译： 编码装置使得可以显着减少处理操作量，同时最小化输出信号质量的劣化。 该编码装置（101）通过确定通过使用输入信号产生的第一信号和通过预定方法产生的第二信号之间的相关性来对输入信号进行编码。 重要性评估单元（202）设置通过划分输入信号的帧而获得的多个处理单元中的每个处理单元的重要性。 CELP编码器（203）执行稀疏处理，其中根据为每个处理单元中的第一信号和/或第二信号构成的多个样本中的预定数量样本的振幅值被设置为零，根据为 每个处理单元，并且计算第一信号和第二信号之间的相关性，其中任一个都进行稀疏处理。
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公开(公告)号：US08660851B2
公开(公告)日：2014-02-25
申请号：US13322202
申请日：2010-05-25
IPC分类号： G10L19/008
CPC分类号： G10L19/005 , G10L19/008
摘要： A decoding device reduces abrupt changes in the number of channels in a decoded signal when transmission errors occur as a result of lost frames in an encoding/decoding system for multichannel signals. In the device, a demultiplexer receives an encoded monaural signal and an encoded differential signal and detects change over time in the received encoded differential signal. An M signal decoder decodes the encoded monaural signal and obtains a decoded monaural signal. An S signal decoder decodes the encoded differential signal and obtains a decoded differential signal. A smoothing unit performs smoothing on the decoded differential signal by means of a computation involving the decoded differential signal and coefficients corresponding to the change over time detected by the demultiplexer. An L/R signal computation unit computes a decoded stereo signal from the decoded monaural signal and the smoothed decoded differential signal.
摘要翻译： 由于多通道信号的编码/解码系统中的丢失帧的结果，当传输错误发生时，解码装置减少解码信号中的信道数量的突然变化。 在该装置中，解复用器接收经编码的单声道信号和经编码的差分信号，并检测接收到的编码差分信号中随时间的变化。 M信号解码器解码编码的单声道信号并获得解码的单声道信号。 S信号解码器对编码的差分信号进行解码并获得解码的差分信号。 平滑单元通过涉及解码的差分信号的计算和对应于由解复用器检测到的随时间变化的系数对解码的差分信号进行平滑处理。 L / R信号计算单元从解码的单声道信号和平滑的解码的差分信号计算解码的立体声信号。
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公开(公告)号：US20130124201A1
公开(公告)日：2013-05-16
申请号：US13703491
申请日：2011-06-07
IPC分类号： G10L19/008 , H03G3/20
CPC分类号： G10L19/008 , G10L19/0212 , G10L19/18 , G10L19/24 , G10L21/038 , H03G3/20
摘要： Disclosed is a decoding device which can efficiently encode/decode spectral data in a high pass section of a broadband signal. In the disclosed device: a sample group extraction unit (372) partially selects spectral components by means of an ease of selection importance which is the extent that the spectral components come close to the spectral component having the maximum amplitude value, in the spectrum of a high pass estimated by means of first parameters contained in second encoded information and bands most approximated to each of the spectrums of a plurality of sub-bands calculated from the spectrum of a second decode signal; a logarithmic gain application unit (373) applies second parameters to the partially selected spectral components; and an interpolation processing unit (374) applies third parameters which are adaptively set according to the value of the second parameters, to the spectral components which were not partially selected.
摘要翻译： 公开了一种可以在宽带信号的高通部分中有效地编码/解码频谱数据的解码装置。 在所公开的装置中：采样组提取单元（372）通过在频谱分量接近具有最大振幅值的频谱分量的范围内的选择重要性的方面来部分地选择频谱分量 通过第二编码信息中包含的第一参数和最接近于从第二解码信号的频谱计算出的多个子带的每个频谱的频带估计的高通; 对数增益应用单元（373）将第二参数应用于部分选择的频谱分量; 并且插值处理单元（374）将根据第二参数的值自适应地设定的第三参数应用于未被部分选择的频谱分量。
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50.发明申请公开(公告)号：US20130035943A1
公开(公告)日：2013-02-07
申请号：US13641493
申请日：2011-04-01
IPC分类号： G10L21/00
CPC分类号： G10L19/24 , G10L19/038 , G10L2019/0006
摘要： Disclosed is an encoding device capable of improving decoded signal quality. A local search unit (302) conducts a local search on a plurality of sub-bands generated by dividing spectrum data, and calculates lattice vectors for the spectra in the plurality of sub-bands. A multi-rate indexing unit (303) uses the lattice vectors to perform multi-rate indexing on each of the sub-bands, and generates indexing information showing the results thereof. A band selection unit (304) determines certain sub-bands from amongst the plurality of sub-bands in a plurality of encoding layers as perceptually important sub-band groups, where these are: within a selection range of sub-bands wherein the total number of encoding bits allocated to each of the plurality of sub-bands in the indexing information is equal to or less than an already set value, and within a sub-band selection range with the highest total energy of each of the plurality of sub-bands.
摘要翻译： 公开了能够提高解码信号质量的编码装置。 本地搜索单元（302）对通过分割频谱数据产生的多个子带进行局部搜索，并且计算多个子带中的频谱的格子向量。 多速率索引单元（303）使用格子向量对每个子带执行多速率索引，并生成表示其结果的索引信息。 频带选择单元（304）从多个编码层中的多个子频带中确定某些子频带，作为感知上重要的子频带组，其中它们是：在子频段的选择范围内，其中总数 分配给索引信息中的多个子带中的每一个的编码比特等于或小于已经设定的值，并且在多个子带中的每个子带的总能量最高的子带选择范围内 。
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