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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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公开(公告)号：US08073050B2
公开(公告)日：2011-12-06
申请号：US12068833
申请日：2008-02-12
IPC分类号： H04N7/12
CPC分类号： G10L21/038 , G10L19/083
摘要： When creating SBR data in a the low-resolution mode, an encoding device divides a high-frequency component of input audio data being encoded by SBR method into a high-frequency band and a low-frequency band, and calculates an average high-frequency power value that indicates the average value of the power in the high-frequency band of the audio data, as well as an average low-frequency power value that indicates the average value of the power in the low-frequency band of the audio data. The encoding device then compares the average high-frequency power value and the average low-frequency power value, selecting the smaller of the two. The encoding device then corrects the power of the high-frequency component of the signal being encoded by the SBR method so that it equals the selected average power value.
摘要翻译： 当以低分辨率模式创建SBR数据时，编码装置将由SBR方法编码的输入音频数据的高频分量划分成高频带和低频带，并计算平均高频 指示音频数据的高频带中的功率的平均值的功率值以及指示音频数据的低频带中的功率的平均值的平均低频功率值。 然后，编码装置比较平均高频功率值和平均低频功率值，选择两者中较小的一个。 然后，编码装置校正由SBR方法编码的信号的高频分量的功率，使得其等于所选择的平均功率值。
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公开(公告)号：US07787500B2
公开(公告)日：2010-08-31
申请号：US10927987
申请日：2004-08-27
CPC分类号： H04L47/10 , H04L47/22 , H04L47/50 , H04L47/564 , H04L65/80
摘要： In a packet receiving method and device which convert a voice packet received into a voice, a receiving packet buffer temporarily stores a voice packet received; a plurality of parameter information monitors respectively determine different buffer adjustment values for determining a buffering amount of the receiving packet buffer based on one or more pieces of parameter information obtained from the voice packet temporarily stored; a buffer adjustment value determiner determines a receiving buffer adjustment value from the plural buffer adjustment values; and a buffer controller controls the buffering amount based on the receiving buffer adjustment value.
摘要翻译： 在将接收到的语音分组转换为语音的分组接收方法和装置中，接收分组缓冲器临时存储接收的语音分组; 多个参数信息监视器分别基于从临时存储的语音分组获得的一个或多个参数信息来确定用于确定接收分组缓冲器的缓冲量的不同缓冲器调整值; 缓冲器调整值确定器从多个缓冲器调整值确定接收缓冲器调整值; 并且缓冲器控制器基于接收缓冲器调整值来控制缓冲量。
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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：US20090070120A1
公开(公告)日：2009-03-12
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：US20080219344A1
公开(公告)日：2008-09-11
申请号：US12068833
申请日：2008-02-12
IPC分类号： H04B1/66
CPC分类号： G10L21/038 , G10L19/083
摘要： When creating SBR data in a the low-resolution mode, an encoding device divides a high-frequency component of input audio data being encoded by SBR method into a high-frequency band and a low-frequency band, and calculates an average high-frequency power value that indicates the average value of the power in the high-frequency band of the audio data, as well as an average low-frequency power value that indicates the average value of the power in the low-frequency band of the audio data. The encoding device then compares the average high-frequency power value and the average low-frequency power value, selecting the smaller of the two. The encoding device then corrects the power of the high-frequency component of the signal being encoded by the SBR method so that it equals the selected average power value.
摘要翻译： 当以低分辨率模式创建SBR数据时，编码装置将由SBR方法编码的输入音频数据的高频分量划分成高频带和低频带，并计算平均高频 指示音频数据的高频带中的功率的平均值的功率值以及指示音频数据的低频带中的功率的平均值的平均低频功率值。 然后，编码装置比较平均高频功率值和平均低频功率值，选择两者中较小的一个。 然后，编码装置校正由SBR方法编码的信号的高频分量的功率，使得其等于所选择的平均功率值。
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公开(公告)号：US20080154589A1
公开(公告)日：2008-06-26
申请号：US12073276
申请日：2008-03-03
IPC分类号： G10L19/00
CPC分类号： G10L19/035 , G10L25/27
摘要： To alleviate degradation of sound quality which may be caused by pre-echoes and bit starvation. An acoustic analyzer analyzes an audio signal to calculate perceptual entropy indicating how many bits are required for quantization. A coded bit count monitor monitors the number of coded bits produced from the audio signal and calculates the number of available bits for the current frame. Based on the combination of the perceptual entropy and the number of available bits, a frame division number determiner determines a division number N for dividing a frame of the audio signal into N blocks. An orthogonal transform processor divides a frame by the determined division number and subjects each divided block of the audio signal to an orthogonal transform process, thereby obtaining orthogonal transform coefficients. A quantizer quantizes the orthogonal transform coefficients on a divided block basis.
摘要翻译： 以缓解由回声和位饥饿引起的声音质量下降。 声学分析仪分析音频信号以计算感知熵，指示量化所需的位数。 编码比特计数监视器监视从音频信号产生的编码比特数，并计算当前帧的可用比特数。 基于感知熵与可用比特数的组合，帧分割数确定器确定用于将音频信号的帧划分成N个块的分割数N. 正交变换处理器将帧除以确定的分割数，并将音频信号的每个分割块进行正交变换处理，从而获得正交变换系数。 量化器基于分割块量化正交变换系数。
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18.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：US20050238013A1
公开(公告)日：2005-10-27
申请号：US10927987
申请日：2004-08-27
IPC分类号： H04L12/70 , H04L12/885 , H04L12/56
CPC分类号： H04L47/10 , H04L47/22 , H04L47/50 , H04L47/564 , H04L65/80
摘要： In a packet receiving method and device which convert a voice packet received into a voice, a receiving packet buffer temporarily stores a voice packet received; a plurality of parameter information monitors respectively determine different buffer adjustment values for determining a buffering amount of the receiving packet buffer based on one or more pieces of parameter information obtained from the voice packet temporarily stored; a buffer adjustment value determiner determines a receiving buffer adjustment value from the plural buffer adjustment values; and a buffer controller controls the buffering amount based on the receiving buffer adjustment value.
摘要翻译： 在将接收到的语音分组转换为语音的分组接收方法和装置中，接收分组缓冲器临时存储接收的语音分组; 多个参数信息监视器分别基于从临时存储的语音分组获得的一个或多个参数信息来确定用于确定接收分组缓冲器的缓冲量的不同缓冲器调整值; 缓冲器调整值确定器从多个缓冲器调整值确定接收缓冲器调整值; 并且缓冲器控制器基于接收缓冲器调整值来控制缓冲量。
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公开(公告)号：US08249882B2
公开(公告)日：2012-08-21
申请号：US11902732
申请日：2007-09-25
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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