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21.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：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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23.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：US20070118368A1
公开(公告)日：2007-05-24
申请号：US11654679
申请日：2007-01-18
IPC分类号： G10L19/12
CPC分类号： G10L19/025 , G10L19/0212 , G10L19/022
摘要： An audio encoding apparatus comprising: a power calculation unit that calculates a power fluctuation ratio based on the input signal; a calculation unit that calculates a prediction gain fluctuation ratio based on the input signal; and a block length judging unit that selects one of encoding using a long block mode segmenting an input signal into frames each consisting of a predetermined number of samples and encoding each of the frames, and encoding using a short block mode segmenting each of the frames into short blocks and encoding each of the short blocks, based on the power fluctuation ratio and the prediction gain fluctuation ratio.
摘要翻译： 一种音频编码装置，包括：功率计算单元，其基于所述输入信号计算功率变动率; 计算单元，其基于所述输入信号计算预测增益波动比; 以及块长度判断单元，其使用将输入信号分割成长块模式的编码中的一个，将每个由预定数量的样本组成的帧和每个帧进行编码，并且使用将每个帧分割的短块模式进行编码， 基于功率波动率和预测增益波动比，对短块进行短块化并对每个短块进行编码。
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公开(公告)号：US08818764B2
公开(公告)日：2014-08-26
申请号：US13074379
申请日：2011-03-29
IPC分类号： H03F1/26
CPC分类号： G10L19/008
摘要： A downmixing device includes: a matrix conversion unit configured to perform a matrix operation for an input signal; a rotation correction unit configured to rotate an output signal of the matrix conversion unit; a spatial information extraction unit configured to extract spatial information from the output signal of the rotation correction unit; and an error calculation unit configured to calculate an error amount of the matrix operation result for the input signal by performing a matrix operation for the output signal of the rotation correction unit and the spatial information extracted by the spatial information extraction unit using a matrix that is inverse to the matrix used for the matrix operation by the matrix conversion unit.
摘要翻译： 降混装置包括：矩阵转换单元，被配置为对输入信号执行矩阵运算; 旋转校正单元，被配置为旋转矩阵转换单元的输出信号; 空间信息提取单元，被配置为从旋转校正单元的输出信号中提取空间信息; 以及误差计算单元，被配置为通过对旋转校正单元的输出信号执行矩阵运算和由空间信息提取单元提取的空间信息，使用矩阵运算结果来计算输入信号的矩阵运算结果的误差量， 与矩阵转换单元用于矩阵运算的矩阵相反。
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26.发明授权Parametric stereophonic audio decoding for coefficient correction by distortion detection 有权参数立体声音频解码，用于通过失真检测进行系数校正公开(公告)号：US08374882B2
公开(公告)日：2013-02-12
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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公开(公告)号：US20100329470A1
公开(公告)日：2010-12-30
申请号：US12823616
申请日：2010-06-25
IPC分类号： H04R29/00
CPC分类号： G10L19/025
摘要： An audio information processing apparatus and method include dividing an audio signal, determining a time period having a power change ratio of an audio signal larger than a first threshold value as an attack candidate, searching the time period of the attack candidate and a time period immediately before the time period of the attack candidate for an attack starting point, correcting a power of an audio signal included in the time period, and determining whether a power change ratio of the audio signal included in the time period is larger than a second threshold value for attack detection which is larger than the first threshold value.
摘要翻译： 音频信息处理装置和方法包括：分割音频信号，确定具有大于第一阈值的音频信号的功率变化率的时间段作为攻击候选者，在攻击候选者的时间周期和紧急时刻 在攻击起始点的攻击候选者的时间段之前，校正包括在该时间段内的音频信号的功率，以及确定该时间段中包括的音频信号的功率变化率是否大于第二阈值 用于大于第一阈值的攻击检测。
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28.发明授权Audio signal encoding device, method, and medium by correcting allowable error powers for a tonal frequency spectrum 有权音频信号编码装置，方法和介质，通过校正音调频谱的容许误差功率公开(公告)号：US09076440B2
公开(公告)日：2015-07-07
申请号：US12367963
申请日：2009-02-09
IPC分类号： G10L25/00 , G10L19/00 , G10L21/00 , G10L19/035 , G10L19/02
CPC分类号： G10L19/035 , G10L19/0212
摘要： A disclosed encoding device converts an audio signal into frequency spectra, determines allowable error powers with respect to bands divided by the frequency of the audio signal by a predetermined with, detects a tonal frequency spectrum from the frequency spectra, and detects a band containing the frequency spectrum. Using the detection result and the allowable error powers, the encoding device performs correction such that allowable error powers determined by a power determining unit with respect to bands adjacent to the band detected by a detecting unit become smaller than the powers of the frequency spectra with respect to the adjacent bands, and quantizes each of frequency spectra having greater powers than the corrected allowable error powers.
摘要翻译： 所公开的编码装置将音频信号转换为频谱，将相对于由音频信号的频率除以预定宽度的频带的允许误差功率确定，从频谱检测音调频谱，并检测包含频率的频带 光谱。 使用检测结果和允许的误差功率，编码装置执行校正，使得由功率确定单元确定的关于由与检测单元检测到的频带相邻的频带的容许误差功率变得小于相对于频谱的功率的功率 并且量化具有比校正的允许误差功率更大的功率的每个频谱。
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29.发明申请AUDIO CODING DEVICE, AUDIO CODING METHOD, AND COMPUTER-READABLE RECORDING MEDIUM STORING AUDIO CODING COMPUTER PROGRAM 有权音频编码设备，音频编码方法和计算机可读记录媒体存储音频编码计算机程序公开(公告)号：US20120224703A1
公开(公告)日：2012-09-06
申请号：US13362317
申请日：2012-01-31
IPC分类号： H04R5/00
CPC分类号： H04R3/00 , G10L19/025
摘要： An audio coding device includes a time frequency transform unit that, with respect to each of a plurality of channels included in an audio signal, generates a time frequency signal indicating frequency components at each time by performing a time frequency transform on a signal of the channel; a transient detection unit that detects a transient with respect to each of the plurality of channels so as to obtain a transient detection time; a transient time correction unit that, when a difference in transient detection times between an early detection channel in which the transient detection time is earliest and a late detection channel that is a channel other than the early detection channel among the plurality of channels is within a range in which the transient; a grid determination unit that, with respect to each of the plurality of channels, and a coding unit that codes.
摘要翻译： 音频编码装置包括：时频变换部，对于包含在音频信号中的多个频道中的每一个，通过对信道的信号进行时间频率变换，生成表示各时刻频率分量的时间频率信号 ; 瞬态检测单元，其针对所述多个通道中的每一个检测瞬态，以获得瞬时检测时间; 瞬时时间校正单元，其中当所述多个频道中的所述瞬时检测时间最早的早期检测信道与作为所述早期检测信道之外的信道的晚期检测信道之间的瞬时检测时间的差异在 短暂的范围; 对于多个信道中的每个信道的网格确定单元和对编码的编码单元。
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30.发明申请ENCODER, ENCODING METHOD, AND COMPUTER-READABLE RECORDING MEDIUM STORING ENCODING PROGRAM 审中-公开编码器，编码方法和计算机可读记录存储编码程序公开(公告)号：US20120163608A1
公开(公告)日：2012-06-28
申请号：US13311682
申请日：2011-12-06
IPC分类号： H04R5/00
CPC分类号： H04S3/008 , G10L19/008 , H04S1/007 , H04S2400/03
摘要： An encoder includes, a degree-of-importance calculating unit that calculates a degree of importance of each of a first number of signals included in input signals; a signal converting unit that converts the first number of signals included in the input signals into a second number of signals; a degree-of-importance converting unit that converts a first number of degrees of importance, a number of which is equal to the first number of signals, calculated by the degree-of-importance calculating unit into a second number of degrees of importance, a number of which is equal to the second number of signals; a number-of-bits determining unit that determines a number of bits for use in quantizing each of the second number of signals obtained by the conversion performed by the signal converting; and a quantizing unit that quantizes each of the second number.
摘要翻译： 编码器包括：重要度计算单元，其计算包括在输入信号中的第一数量信号中每一个的重要度; 信号转换单元，将包括在输入信号中的第一数目的信号转换成第二数量的信号; 重要度转换单元，其将由重要度计算单元计算的第一数量的重要度的第一数量等于由第一重要度计算单元计算的第一数量的重要度， 其数量等于第二数量的信号; 位数确定单元，确定用于量化通过所述信号转换执行的转换获得的所述第二数量信号中的每一个的比特数; 以及量化每个第二数量的量化单元。
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