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公开(公告)号：US08081622B2
公开(公告)日：2011-12-20
申请号：US11486827
申请日：2006-07-14
CPC分类号： H04L47/10 , G10L19/00 , G10L19/22 , H04L43/087 , H04L47/22 , H04L47/283 , H04L47/32
摘要： It is an object of this invention to improve speech quality in voice communications.Provided is a jitter buffer controller for controlling a jitter buffer in which arrived packets are accumulated, including: a jitter measuring portion for measuring jitters in the arrived packets; a judging portion for judging whether or not the jitters of the packets can be absorbed with an accumulation capacity of the jitter buffer; a determining portion for determining levels of importance of the packets; and a control portion for performing reproduction processing or discarding processing on a packet, among the packets accumulated in the jitter buffer, having jitter that cannot be absorbed with the accumulation capacity of the buffer, depending on a level of importance of the packet.
摘要翻译： 本发明的目的是提高语音通信中的语音质量。 提供了一种用于控制累积到达分组的抖动缓冲器的抖动缓冲器控制器，包括：用于测量到达分组中的抖动的抖动测量部分; 用于判断所述分组的抖动能否被所述抖动缓冲器的累积容量吸收的判断部分; 用于确定分组的重要性的级别的确定部分; 以及控制部分，用于根据分组的重要性的水平，在积累在抖动缓冲器中的分组之间执行再现处理或废弃处理，具有不能被缓冲器的累积容量吸收的抖动。
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公开(公告)号：US20070223467A1
公开(公告)日：2007-09-27
申请号：US11486827
申请日：2006-07-14
IPC分类号： H04L12/50
CPC分类号： H04L47/10 , G10L19/00 , G10L19/22 , H04L43/087 , H04L47/22 , H04L47/283 , H04L47/32
摘要： It is an object of this invention to improve speech quality in voice communications. Provided is a jitter buffer controller for controlling a jitter buffer in which arrived packets are accumulated, including: a jitter measuring portion for measuring jitters in the arrived packets; a judging portion for judging whether or not the jitters of the packets can be absorbed with an accumulation capacity of the jitter buffer; a determining portion for determining levels of importance of the packets; and a control portion for performing reproduction processing or discarding processing on a packet, among the packets accumulated in the jitter buffer, having jitter that cannot be absorbed with the accumulation capacity of the buffer, depending on a level of importance of the packet.
摘要翻译： 本发明的目的是提高语音通信中的语音质量。 提供了一种用于控制累积到达分组的抖动缓冲器的抖动缓冲器控制器，包括：用于测量到达分组中的抖动的抖动测量部分; 用于判断所述分组的抖动能否被所述抖动缓冲器的累积容量吸收的判断部分; 用于确定分组的重要性的级别的确定部分; 以及控制部分，用于根据分组的重要性水平，在积累在抖动缓冲器中的分组之间执行对不能被缓冲器的累积容量吸收的抖动的分组的再现处理或废弃处理。
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3.发明申请Fluctuation absorbing buffer apparatus and packet voice communication apparatus 审中-公开波动吸收缓冲装置和分组语音通信装置公开(公告)号：US20070201498A1
公开(公告)日：2007-08-30
申请号：US11411991
申请日：2006-04-26
CPC分类号： H04L47/10 , H04L47/2416 , H04L47/283
摘要： A fluctuation absorbing buffer apparatus configured to absorb, by means of a reproduction buffer, a transmission delay time fluctuation occurring in a voice packet communication system, includes: a packet state notifying part carrying out decrease notification when the number of voice packets stored in the reproduction buffer decrease; a voice determining part carrying out determination as to whether or not voice exists on the voice packets stored in the reproduction buffer; and voice reproduction control part repeatedly reproducing voice packets determined as not having voice when decrease is notified by said packet state notifying part.
摘要翻译： 一种波动吸收缓冲装置，被配置为通过再现缓冲器吸收在语音分组通信系统中发生的传输延迟时间波动，包括：当存储在再现中的语音分组的数量时，分组状态通知部分执行减少通知 缓冲减少; 声音确定部分执行对存储在再现缓冲器中的语音分组是否存在语音的确定; 语音再现控制部分，当通过所述分组状态通知部分通知减少时，重复地再现被确定为没有语音的语音分组。
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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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公开(公告)号：US20080071541A1
公开(公告)日：2008-03-20
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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公开(公告)号：US07734053B2
公开(公告)日：2010-06-08
申请号：US11390054
申请日：2006-03-27
CPC分类号： G10L19/0204 , G10L19/002 , G10L19/008
摘要： An encoding apparatus compresses a stereo signal using a sum signal and a difference signal of a left component signal and a right component signal of the stereo signal. The encoding apparatus includes a calculating unit that calculates complexity of the sum signal and complexity of the difference signal; a setting unit that sets, based on the complexity, an allocation rate of bits to be allocated in quantizing the sum signal and the difference signal; and a quantizing unit that quantizes the sum signal and the difference signal based on the allocation rate.
摘要翻译： 编码装置使用和信号和立体声信号的左分量信号和右分量信号的差分信号来压缩立体声信号。 编码装置包括计算和信号的复杂度和差分信号的复杂度的计算单元; 设置单元，其基于复杂度设置在量化所述和信号和所述差信号中要分配的比特的分配速率; 以及量化单元，其基于分配率量化和信号和差分信号。
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公开(公告)号：US20070127585A1
公开(公告)日：2007-06-07
申请号：US11390054
申请日：2006-03-27
IPC分类号： H04L23/02
CPC分类号： G10L19/0204 , G10L19/002 , G10L19/008
摘要： An encoding apparatus compresses a stereo signal using a sum signal and a difference signal of a left component signal and a right component signal of the stereo signal. The encoding apparatus includes a calculating unit that calculates complexity of the sum signal and complexity of the difference signal; a setting unit that sets, based on the complexity, an allocation rate of bits to be allocated in quantizing the sum signal and the difference signal; and a quantizing unit that quantizes the sum signal and the difference signal based on the allocation rate.
摘要翻译： 编码装置使用和信号和立体声信号的左分量信号和右分量信号的差分信号来压缩立体声信号。 编码装置包括计算和信号的复杂度和差分信号的复杂度的计算单元; 设置单元，其基于复杂度设置在量化所述和信号和所述差信号中要分配的比特的分配速率; 以及量化单元，其基于分配率量化和信号和差分信号。
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公开(公告)号：US08073687B2
公开(公告)日：2011-12-06
申请号：US12232096
申请日：2008-09-10
IPC分类号： G10L19/00
CPC分类号： G10L19/0204
摘要： According to an aspect of an embodiment, a method for regenerating an audio signal including a low frequency component and a high frequency component by decoding a coded data including a first coded data and a second coded data, the method comprising the steps of: generating the low frequency component; generating the high frequency component; determining whether the low frequency component has transient characteristics or not; generating a low frequency correction component by removing a stationary component when the audio signal has the transient characteristics; generating a corrected high frequency component by correcting the high-frequency component on the basis of the duration of the low frequency correction component when the audio signal has the transient characteristics; and regenerating the audio signal by synthesizing the low frequency component with the corrected high-frequency component.
摘要翻译： 根据实施例的一个方面，一种用于通过对包括第一编码数据和第二编码数据的编码数据进行解码来再生包括低频分量和高频分量的音频信号的方法，所述方法包括以下步骤： 低频分量; 产生高频分量; 确定低频分量是否具有瞬态特性; 当音频信号具有瞬态特性时通过去除固定分量来产生低频校正分量; 当音频信号具有瞬态特性时，通过基于低频校正分量的持续时间校正高频分量来产生校正的高频分量; 以及通过利用所述校正的高频分量合成所述低频分量来再生所述音频信号。
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公开(公告)号：US20070223716A1
公开(公告)日：2007-09-27
申请号：US11447994
申请日：2006-06-07
CPC分类号： G10L19/26 , G10L21/0232 , G10L21/0364 , H03G5/005 , H03G5/165
摘要： A gain adjusting method and a gain adjusting device for adjusting gain of a processed voice signal that is obtained by signal processing an input voice signal are disclosed. According to the gain adjusting method,a masking property of the processed voice signal is computed, andgain is adjusted for every frequency if the frequency is masked according to the masking property, while canceling a difference between the processed voice signal and the input voice signal where the frequency is not masked.
摘要翻译： 公开了一种增益调整方法和增益调整装置，用于调整通过信号处理输入语音信号而获得的处理语音信号的增益。 根据增益调整方法，计算处理后的声音信号的掩蔽特性，并且如果根据掩蔽特性屏蔽频率，则针对每个频率调整增益，同时消除处理的语音信号与输入的语音信号之间的差异 频率未被屏蔽。
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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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