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1.发明授权Audio coding device, method, and computer-readable recording medium storing program 有权音频编码装置，方法和计算机可读记录介质存储程序公开(公告)号：US09111533B2
公开(公告)日：2015-08-18
申请号：US13297536
申请日：2011-11-16
IPC分类号： G10L19/02 , G10L19/035 , G10L19/00 , G10L19/008
CPC分类号： G10L19/035 , G10L19/0017 , G10L19/008 , G10L19/0204
摘要： An audio coding device includes a time-to-frequency converter that performs time-to-frequency conversion on each frame of a signal in at least one channel included in an audio signal in a predetermined length of time in order to convert the signal in the at least one channel to a frequency signal; a complexity calculator that calculates complexity of the frequency signal for each of the at least one channel. The audio further includes a bit allocation controller that determines a number of bits to be allocated to each of at least one channel so that more bits are allocated to the each of the at least one channel as the complexity of the each of at least one channel increases, and increases the number of bits to be allocated as an estimation error in the number; and a coder that codes the frequency signal.
摘要翻译： 一种音频编码装置包括一个时间 - 频率转换器，它以预定的时间长度在包括在音频信号中的至少一个信道中的信号的每个帧上进行时间 - 频率转换，以便将信号转换成 至少一个频道到频率信号; 复杂度计算器，其计算所述至少一个信道中的每一个的频率信号的复杂度。 音频还包括位分配控制器，其确定要被分配给至少一个信道中的每一个的比特数，使得更多的比特被分配给至少一个信道中的每一个，因为至少一个信道中的每一个的复杂度 增加并增加要分配的比特数作为该数量中的估计误差; 以及编码频率信号的编码器。
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2.发明授权公开(公告)号：US09070373B2
公开(公告)日：2015-06-30
申请号：US13614085
申请日：2012-09-13
IPC分类号： G10L21/038 , G10L25/90
CPC分类号： G10L21/038 , G10L25/90
摘要： A decoding device to decode a main signal code obtained by encoding low-frequency components of an original signal and to output a lowband main signal for output of a main signal, includes: a processor; and a memory which stores a plurality of instructions, which when executed by the processor, cause the processor to execute, decoding auxiliary information code obtained by encoding auxiliary information, the auxiliary information being for generating, from the lowband main signal, a highband main signal corresponding to high-frequency components of the original signal; decoding residual code obtained by encoding low-frequency components of a residual signal indicating error components produced by encoding of the original signal, and thereby output a lowband residual signal; generating a highband residual signal indicating high-frequency components of the residual signal, based on the lowband residual signal output by the residual decoder and the output auxiliary information; generating an output signal.
摘要翻译： 解码装置，对通过对原始信号的低频分量进行编码而得到的主信号编码，并输出用于输出主信号的低频带主信号，包括：处理器; 以及存储器，其存储多个指令，所述指令在由所述处理器执行时使所述处理器执行解码通过对辅助信息进行编码而获得的辅助信息代码，所述辅助信息用于从所述低频带主信号产生高频主信号 对应于原始信号的高频分量; 解码通过编码表示由原始信号编码产生的误差分量的残差信号的低频分量获得的残差码，从而输出低频带残留信号; 基于所述残差解码器输出的低频带残留信号和所述输出辅助信息，生成指示所述残留信号的高频成分的高频残留信号; 产生输出信号。
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3.发明授权公开(公告)号：US08818539B2
公开(公告)日：2014-08-26
申请号：US12829650
申请日：2010-07-02
IPC分类号： G10L19/00 , G10L19/008 , G10L19/02 , H04R5/00
CPC分类号： G10L19/008 , G10L19/0204
摘要： An audio encoding device includes, a time-frequency transform unit that transforms signals of channels included in an audio signal having a first number of channels into frequency signals respectively, a down-mix unit that generates an audio frequency signal having a second number of channels, a low channel encoding unit that generates a low channel audio code by encoding the audio frequency signal, a space information extraction unit that extracts space information representing spatial information of a sound, an importance calculation unit that calculates importance on the basis of the space information, a space information correction unit that corrects the space information, a space information encoding unit that generates a space information code, and a multiplexing unit that generates an encoded audio signal by multiplexing the low channel audio code and the space information code.
摘要翻译： 一种音频编码装置包括：时频变换单元，其将包括在具有第一数量的频道的音频信号中的信道的信号分别变换为频率信号;降混单元，其生成具有第二数量的频道的音频信号 ，通过对音频信号进行编码来生成低通道音频代码的低通道编码单元，提取表示声音的空间信息的空间信息的空间信息提取单元，基于空间信息计算重要性的重要度计算单元 校正空间信息的空间信息校正单元，产生空间信息代码的空间信息编码单元，以及通过多路复用低频声道音频码和空间信息码来生成编码音频信号的复用单元。
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4.发明授权Audio decoding apparatus and audio decoding method performing weighted addition on signals 有权对信号进行加权相加的音频解码装置和音频解码方法公开(公告)号：US08706508B2
公开(公告)日：2014-04-22
申请号：US12659306
申请日：2010-03-03
CPC分类号： G10L19/008 , H04S2400/03
摘要： An audio decoding apparatus and method are provided. The audio decoding apparatus includes a spectrum converting part configured to divide the first frequency spectrum in each channel of the first audio signal in a time direction or in a frequency direction to calculate a first signal sequence having the same time resolution and the same frequency resolution in all the channels of the first audio signal, a down-mixing part configured to perform weighted addition on the signals at the same time and within the same frequency band included in the first signal sequence in all the channels to calculate a second signal sequence having channels of a second number different from the first number of channels.
摘要翻译： 提供音频解码装置和方法。 音频解码装置包括频谱转换部分，被配置为在时间方向或频率方向上划分第一音频信号的每个信道中的第一频谱，以计算具有相同时间分辨率和相同频率分辨率的第一信号序列 所述第一音频信号的所有信道，下混合部分被配置为在所有信道中同时且在包括在所述第一信号序列中的相同频带内的信号上对所述信号执行加权相加，以计算具有信道的第二信号序列 与第一数量的频道不同的第二号码。
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公开(公告)号：US08244524B2
公开(公告)日：2012-08-14
申请号：US12654591
申请日：2009-12-23
IPC分类号： G10L19/14
CPC分类号： G10L19/02
摘要： An encoding apparatus including an SBR (Spectral Band Replication) encoder creates high-frequency-component encoded data with reduced bits. The encoding apparatus converts an input signal into a frequency-domain spectrum signal, divides the converted spectrum signal into an arbitrary number of segments with respect to a time axis and a frequency axis, calculates a spectrum power of each segment and a feature parameter that represents a feature of the corresponding spectrum power, calculates a masking threshold using the calculated spectrum power of each segment, detects a segment having a spectrum power equal to or less than the calculated masking threshold, corrects the spectrum power of the detected segment, and encodes both the corrected spectrum power and the calculated feature parameter. The correction reduces a difference between quantization values, reducing the number of encoded bits.
摘要翻译： 包括SBR（光谱带复制）编码器的编码装置利用减少的位来创建高频分量编码数据。 编码装置将输入信号转换为频域频谱信号，将经转换的频谱信号相对于时间轴和频率轴分割为任意数量的片段，计算每个片段的频谱功率和表示 使用相应频谱功率的特征，使用所计算的每个段的频谱功率来计算掩蔽阈值，检测具有等于或小于所计算的掩蔽阈值的频谱功率的段，校正所检测到的段的频谱功率，并对两者进行编码 校正的频谱功率和计算的特征参数。 校正减少量化值之间的差异，减少编码比特数。
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公开(公告)号：US07957973B2
公开(公告)日：2011-06-07
申请号：US11878596
申请日：2007-07-25
IPC分类号： G10L13/00
CPC分类号： G10L19/0204 , G10L21/038
摘要： An audio signal interpolation device comprises a spectral movement calculation unit which determines a spectral movement which is indicative of a difference in each of spectral components between a frequency spectrum of a current frame of an input audio signal and a frequency spectrum of a previous frame of the input audio signal stored in a spectrum storing unit. An interpolation band determination unit determines a frequency band to be interpolated by using the frequency spectrum of the current frame and the spectral movement. A spectrum interpolation unit performs interpolation of spectral components in the frequency band for the current frame by using either the frequency spectrum of the current frame or the frequency spectrum of the previous frame.
摘要翻译： 音频信号插值装置包括频谱移动计算单元，其确定表示输入音频信号的当前帧的频谱与前一帧的频谱之间的频谱分量中的每个频谱分量的差的频谱移动 输入存储在频谱存储单元中的音频信号。 插值频带确定单元通过使用当前帧的频谱和频谱移动来确定要内插的频带。 频谱内插单元通过使用当前帧的频谱或前一帧的频谱来对当前帧的频带中的频谱分量进行插值。
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7.发明申请公开(公告)号：US20110002393A1
公开(公告)日：2011-01-06
申请号：US12829650
申请日：2010-07-02
CPC分类号： G10L19/008 , G10L19/0204
摘要： An audio encoding device includes, a time-frequency transform unit that transforms signals of channels included in an audio signal having a first number of channels into frequency signals respectively, a down-mix unit that generates an audio frequency signal having a second number of channels, a low channel encoding unit that generates a low channel audio code by encoding the audio frequency signal, a space information extraction unit that extracts space information representing spatial information of a sound, an importance calculation unit that calculates importance on the basis of the space information, a space information correction unit that corrects the space information, a space information encoding unit that generates a space information code, and a multiplexing unit that generates an encoded audio signal by multiplexing the low channel audio code and the space information code.
摘要翻译： 一种音频编码装置包括：时频变换单元，其将包括在具有第一数量的频道的音频信号中的信道的信号分别变换为频率信号;降混单元，其生成具有第二数量的频道的音频信号 ，通过对音频信号进行编码来生成低通道音频代码的低通道编码单元，提取表示声音的空间信息的空间信息的空间信息提取单元，基于空间信息计算重要性的重要度计算单元 校正空间信息的空间信息校正单元，产生空间信息代码的空间信息编码单元，以及通过多路复用低频声道音频码和空间信息码来生成编码音频信号的复用单元。
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公开(公告)号：US20100153120A1
公开(公告)日：2010-06-17
申请号：US12634527
申请日：2009-12-09
CPC分类号： G10L19/008 , G10L2021/02082
摘要： An audio decoding method includes: acquiring, from encoded audio data, a reception audio signal and first auxiliary decoded audio information; calculating coefficient information from the first auxiliary decoded audio information; generating a decoded output audio signal based on the coefficient information and the reception audio signal; decoding to result in a decoded audio signal based on the first auxiliary decoded audio signal and the reception audio signal; calculating, from the decoded audio signal, second auxiliary decoded audio information corresponding to the first auxiliary decoded audio information; detecting a distortion caused in a decoding operation of the decoded audio signal by comparing the second auxiliary decoded audio information with the first auxiliary decoded audio information; correcting the coefficient information in response to the detected distortion; and supplying the corrected coefficient information as the coefficient information when generating the decoded output audio signal.
摘要翻译： 音频解码方法包括：从经编码的音频数据获取接收音频信号和第一辅助解码音频信息; 从所述第一辅助解码音频信息计算系数信息; 基于系数信息和接收音频信号生成解码输出音频信号; 解码以基于第一辅助解码音频信号和接收音频信号产生解码音频信号; 从解码音频信号计算与第一辅助解码音频信息相对应的第二辅助解码音频信息; 通过将所述第二辅助解码音频信息与所述第一辅助解码音频信息进行比较，来检测在所述解码音频信号的解码操作中引起的失真; 响应于检测到的失真校正系数信息; 并在生成解码的输出音频信号时提供校正的系数信息作为系数信息。
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9.发明授权Voice packet loss concealment device, voice packet loss concealment method, receiving terminal, and voice communication system 有权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：US07650280B2
公开(公告)日：2010-01-19
申请号：US11065416
申请日：2005-02-24
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生成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。
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公开(公告)号：US20080288262A1
公开(公告)日：2008-11-20
申请号：US11902732
申请日：2007-09-25
IPC分类号： G10L19/00
CPC分类号： G10L19/24 , G10L21/038
摘要： A decoding apparatus that decodes a first encoded data that is encoded into a first time range from a low-frequency component of an audio signal, and a second encoded data that is used when creating a high-frequency component of the audio signal from the low-frequency component and encoded into a second time range, into the audio signal. In the decoding apparatus, a high-frequency component compensating unit that compensates the high-frequency component created from the second encoded data based on the first time range. A decoding unit that decodes into the audio signal by synthesizing the high-frequency component compensated by the high-frequency component compensating unit, and the low-frequency component decoded from the first encoded data.
摘要翻译： 一种解码装置，将从音频信号的低频分量编码成第一时间范围的第一编码数据和从低频产生音频信号的高频分量时使用的第二编码数据 频率分量并编码到第二时间范围内，进入音频信号。 在解码装置中，根据第一时间范围，补偿从第二编码数据生成的高频分量的高频分量补偿部。 解码单元，其通过合成由高频分量补偿单元补偿的高频分量和从第一编码数据解码的低频分量来解码为音频信号。
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