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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：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：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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5.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：US20100174960A1
公开(公告)日：2010-07-08
申请号：US12654447
申请日：2009-12-18
CPC分类号： G10L19/032 , G10L19/005
摘要： A decoding apparatus includes a unit decoding and inversely quantizing coded data to obtain frequency domain audio signal data, a unit computing from the coded data one of the number of scale bits composed of the number of bits corresponding to the scale value of the coded data and the number of spectrum bits composed of the number of bits corresponding to the spectrum value of the coded data, a unit estimating a quantization error of the frequency domain audio signal data based on one of the number of scale bits and the number of spectrum bits of the coded data, a unit computing a correction amount based on the estimated quantization error and correct the frequency domain audio signal data obtained by the frequency domain data obtaining unit based on the computed correction amount, and a unit converting the corrected frequency domain audio signal data into the audio signal.
摘要翻译： 解码装置包括单元解码和逆量化编码数据以获得频域音频信号数据，单元从编码数据中计算由与编码数据的比例值相对应的位数组成的比例数位数， 由对应于编码数据的频谱值的比特数组成的频谱比特数，基于比例数位数和频谱比数之一估计频域音频信号数据的量化误差的单位 编码数据，单元基于估计的量化误差来计算校正量，并且基于所计算的校正量校正由频域数据获取单元获得的频域音频信号数据，以及将校正后的频域音频信号数据 进入音频信号。
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公开(公告)号：US08225160B2
公开(公告)日：2012-07-17
申请号：US12654447
申请日：2009-12-18
IPC分类号： G06F11/30
CPC分类号： G10L19/032 , G10L19/005
摘要： A decoding apparatus includes a unit decoding and inversely quantizing coded data to obtain frequency domain audio signal data, a unit computing from the coded data one of the number of scale bits composed of the number of bits corresponding to the scale value of the coded data and the number of spectrum bits composed of the number of bits corresponding to the spectrum value of the coded data, a unit estimating a quantization error of the frequency domain audio signal data based on one of the number of scale bits and the number of spectrum bits of the coded data, a unit computing a correction amount based on the estimated quantization error and correct the frequency domain audio signal data obtained by the frequency domain data obtaining unit based on the computed correction amount, and a unit converting the corrected frequency domain audio signal data into the audio signal.
摘要翻译： 解码装置包括单元解码和逆量化编码数据以获得频域音频信号数据，单元从编码数据中计算由与编码数据的比例值相对应的位数组成的比例数位数， 由对应于编码数据的频谱值的比特数组成的频谱比特数，基于比例数位数和频谱比数之一估计频域音频信号数据的量化误差的单位 编码数据，单元基于估计的量化误差来计算校正量，并且基于所计算的校正量校正由频域数据获取单元获得的频域音频信号数据，以及将校正后的频域音频信号数据 进入音频信号。
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8.发明申请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：US20050166124A1
公开(公告)日：2005-07-28
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产生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：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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