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1. 发明专利

JP2008261999A Audio decoding device 审中-公开
标题翻译：音频解码设备
公开(公告)号：JP2008261999A
公开(公告)日：2008-10-30
申请号：JP2007104069
申请日：2007-04-11
申请人： Toshiba Corp , 株式会社東芝
发明人： OSADA SHIYOUKO
IPC分类号： G10L19/02 , H03M7/30
CPC分类号： G10L19/032 , G10L19/022
摘要： PROBLEM TO BE SOLVED: To restore reproduced sound faithful to original sound by suppressing influence of distortion which arises when encoding a signal, even if the signal is not continuous in adjoining frequency bands.
SOLUTION: A signal characteristic judgment section 51 detects a signal characteristic from a block shape indicating a time frequency conversion block length, and judges whether a prediction accuracy in a time domain is high, or whether the prediction accuracy in a frequency domain is high. On the basis of the judgment result, a signal correction section 60 performs correction of a quantization error of spectrum information obtained by reverse quantization.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：即使信号在相邻频带中不是连续的，通过抑制对信号进行编码时产生的失真的影响，来恢复忠实于原始声音的再现声音。解决方案：信号特性判断部分51从表示时间频率转换块长度的块形状中检测信号特性，并判断时域中的预测精度是否高，或者频域中的预测精度是否为高。在判断结果的基础上，信号校正部60进行通过反量化获得的频谱信息的量化误差的校正。版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2004104733A Multimedia decoding and reproducing apparatus and synchronization control method thereof 有权
公开(公告)号：JP2004104733A
公开(公告)日：2004-04-02
申请号：JP2002267669
申请日：2002-09-13
申请人： Toshiba Corp , 株式会社東芝
发明人： OSADA SHIYOUKO
IPC分类号： H04N5/60 , H04L7/00 , H04N7/24 , H04N19/00 , H04N19/423 , H04N19/68 , H04N19/70
摘要： PROBLEM TO BE SOLVED: To obtain a more accurate and stable resolution by managing synchronization control at an interval sufficiently shorter than a frame cycle of a media encoding stream.
SOLUTION: In a synchronization control apparatus 15, when frames of a predetermined number are completely decoded and it is possible to refer to an STC, a decoding starting instruction is issued to a decoding apparatus 18 to judge whether the STC is the time indicated by a PTS and when it is the time indicated by the PTS, a reproduction starting instruction is issued to a reproducing apparatus 20. When the STC is not the time indicated by the PTS, the apparatus is turned into standby status and repeats an operation of comparing PTS and STC again by canceling the standby status in response to timer interruption until the STC reaches the PTS time, such that synchronization control is performed with accuracy of a resolution of a timer interrupt function.
COPYRIGHT: (C)2004,JPO

3. 发明专利

JP2004021092A Device and method of audio encoding 审中-公开
公开(公告)号：JP2004021092A
公开(公告)日：2004-01-22
申请号：JP2002178496
申请日：2002-06-19
申请人： Toshiba Corp , 株式会社東芝
发明人： OSADA SHIYOUKO
IPC分类号： G10L19/00 , H03M7/30
摘要： PROBLEM TO BE SOLVED: To provide an audio encoding device which enables avoidance of concentration of distortion on a specific frequency band in encoding processing and suppresses quality degradation of acoustic feeling property of encoded voice as a result.
SOLUTION: The audio encoding device having a scale factor determination tool 3 which determines the optimum scale factors by every scale factor band divided by a frequency region based on the acoustic sense property in a frame is disclosed. The scale factor determination tool 3 performs processing so that a scale factor band satisfying a prescribed standard value is distributed in the frame.
COPYRIGHT: (C)2004,JPO

4. 发明专利

JP2008170554A Audio data processing apparatus and terminal device 有权
标题翻译：音频数据处理设备和终端设备
公开(公告)号：JP2008170554A
公开(公告)日：2008-07-24
申请号：JP2007001708
申请日：2007-01-09
申请人： Toshiba Corp , 株式会社東芝
发明人： TAKEUCHI HIROKAZU , OSADA SHIYOUKO
IPC分类号： G10L19/14 , G10L21/02
CPC分类号： H03F1/26
摘要： PROBLEM TO BE SOLVED: To provide an audio data processing apparatus for achieving improvement of reproduced sound quality regardless of kinds of input audio encoded data, and to provide a terminal device.
SOLUTION: The audio data processing apparatus includes: a decoding means for extracting encoded parameters out of the audio encoded data when restoring and outputting audio data by decoding the audio encoded data being encoded audio data; an acquisition means for acquiring peripheral background noise signals; a correction gain calculation means for calculating correction gain for correcting frequency characteristics of the audio data by using an encoded parameter and the background noise signal; and a frequency characteristic correction means for correcting the frequency characteristics of the audio data based on the correction gain.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种音频数据处理装置，用于实现再现的音质的改进，而不管输入的音频编码数据的种类如何，并提供终端装置。音频数据处理装置包括：解码装置，用于通过对作为编码音频数据的音频编码数据进行解码来恢复和输出音频数据，从音频编码数据中提取编码参数; 用于获取外围背景噪声信号的获取装置; 校正增益计算装置，用于通过使用编码参数和背景噪声信号来计算用于校正音频数据的频率特性的校正增益; 以及频率特性校正装置，用于基于校正增益来校正音频数据的频率特性。版权所有（C）2008，JPO＆INPIT

5. 发明专利

JP2008065162A Audio encoding device 有权
标题翻译：音频编码器
公开(公告)号：JP2008065162A
公开(公告)日：2008-03-21
申请号：JP2006244578
申请日：2006-09-08
申请人： Toshiba Corp , 株式会社東芝
发明人： OSADA SHIYOUKO
IPC分类号： G10L19/02
CPC分类号： G10L19/035
摘要： PROBLEM TO BE SOLVED: To provide an audio encoding device in which average processing amount is reduced by decreasing the number of times of a search for a quantization step size, thereby improving search precision. SOLUTION: As adaptive convergence processing A, a global gain for operating the quantization step size is found, a frequency spectrum is quantized based upon the found global gain, and the generated code amount of the quantized data obtained by the quantization is found. The generated code amount is compared with a target code amount and when a predetermined condition is not met, the adaptive convergence processing A is performed again, but a generated code amount variation amount α when the global gain is varied by one is found, the global gain used for the last adaptive convergence processing A is corrected based thereupon, and the adaptive convergence processing A is carried out using the corrected global gain. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：解决的问题：提供通过减少搜索量化步长的次数来减少平均处理量的音频编码装置，从而提高搜索精度。解决方案：作为自适应融合处理A，发现用于操作量化步长的全局增益，基于找到的全局增益对频谱进行量化，并且找到通过量化得到的量化数据的生成代码量。将生成的代码量与目标代码量进行比较，并且当不满足预定条件时，再次执行自适应会聚处理A，但是发现当全局增益变化1时产生的代码量变化量α，全局用于最后自适应会聚处理A的增益基于此进行校正，并且使用校正后的全局增益来执行自适应收敛处理A. 版权所有（C）2008，JPO＆INPIT

6. 发明专利

JP2008015281A Wide band audio signal encoding device and wide band audio signal decoding device 有权
标题翻译：宽带音频信号编码设备和宽带音频信号解码设备
公开(公告)号：JP2008015281A
公开(公告)日：2008-01-24
申请号：JP2006187123
申请日：2006-07-06
申请人： Toshiba Corp , 株式会社東芝
发明人： TAKEUCHI HIROKAZU , MISEKI KIMIO , OSADA SHIYOUKO
IPC分类号： G10L19/02
CPC分类号： G10L19/035
摘要： PROBLEM TO BE SOLVED: To provide a wide band audio signal encoding device capable of further reducing an amount of codes by subjecting a wide band audio signal to efficient band use.
SOLUTION: Activity is determined for every band of an encoding frame (S1), and unless the determination is continuously off for a regulated number of times or more relating to the past frame of the band (N in S2), an ordinary encoding processing is performed (S3). If the determination is off continuously for the regulated number of times or more (Y in S2), the DIX control information of the divided band is encorded by other conditions S4, S6 (S5). The above is performed over the entire band and one frame component is ended (Y in S7). Next, the total power over the entire part of one frame and the power of the band to which encoding of the DIX control information of the divided band is applied are calculated (S11, 12), and the amount of the allocation code per frame is reduced and corrected from the amount of the regulated allocation code according to the ratio of Pdtx to Ptot (S13), and the amount of the regulated allocation code prior to the correction is applied to the updation of a bit reservor capacity (S14).
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供能够通过对宽带音频信号进行有效频带使用来进一步减少代码量的宽带音频信号编码装置。解决方案：针对编码帧的每个频带确定活动（S1），并且除非对带的过去帧（S2中的N）有关的规定次数或更多次的连续断开，否则普通执行编码处理（S3）。如果确定连续断开规定次数以上（S2中为Y），则分割频带的DIX控制信息由其他条件S4，S6（S5）记录。上述在整个频带上进行，一帧分量结束（S7中为Y）。接下来，计算一帧的整个部分的总功率和应用分频带的DIX控制信息的编码的频带的功率（S11,12），并且每帧的分配码量根据Pdtx与Ptot的比率（S13）从调整分配码的量减少和校正，并且将校正之前的调节分配码的量应用于比特储存容量的更新（S14）。版权所有（C）2008，JPO＆INPIT

7. 发明专利

JP2008017351A Packet stream receiver 审中-公开
标题翻译： PACKET STREAM接收器
公开(公告)号：JP2008017351A
公开(公告)日：2008-01-24
申请号：JP2006188577
申请日：2006-07-07
申请人： Toshiba Corp , 株式会社東芝
发明人： MORI HIROSHI , OSADA SHIYOUKO , SAITO TATSUNORI
IPC分类号： H04L12/70
CPC分类号： H04N19/89 , H04N21/23406 , H04N21/4305 , H04N21/4307 , H04N21/44004 , H04N21/4425
摘要： PROBLEM TO BE SOLVED: To perform outputting without timing deviation by accurately grasping the number of frames omitted by a packet loss or the like. SOLUTION: The present invention relates to a packet stream receiver characterized in comprising: a packet separating section 1 for extracting a display time from a packet; a discontinuity detecting section 2 for detecting discontinuity of the packet; an accumulation buffer 4 for accumulating a decoding frame after the discontinuity is detected; and a display time comparing section 6 which calculates the number of omitted frames based on the number of real frames received until acquiring the display time from a point of discontinuity that is when the discontinuity is detected, in the case where the accumulation buffer 4 accumulates the decoding frame. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：通过精确地掌握由丢包等省略的帧数来执行无定时偏差的输出。解决方案：本发明涉及一种分组流接收机，其特征在于包括：分组分离部分1，用于从分组中提取显示时间; 用于检测分组的不连续性的不连续检测部分2; 累积缓冲器4，用于在检测到不连续之后累积解码帧; 以及显示时间比较部分6，其基于从检测到不连续性的不连续点获取显示时间之前接收到的实际帧的数量来计算省略的帧数，在累加缓冲器4累积的情况下解码帧。版权所有（C）2008，JPO＆INPIT

8. 发明专利

JP2008015357A Encoding device 审中-公开
标题翻译：编码器
公开(公告)号：JP2008015357A
公开(公告)日：2008-01-24
申请号：JP2006188358
申请日：2006-07-07
申请人： Toshiba Corp , 株式会社東芝
发明人： MISEKI KIMIO , TAKEUCHI HIROKAZU , OSADA SHIYOUKO
IPC分类号： G10L19/02
摘要： PROBLEM TO BE SOLVED: To provide an encoding device capable of preventing the degradation of sound quality in a reproduced sound of a band which is coded into a low bit rate.
SOLUTION: A feature-quantization section 31 feature-quantizes a signal of each band of an objective signal x. A gain-quantization section 32 quantizes a gain for each band based on information of a feature vector for each band, which is obtained in the feature-quantization section 31 and the objective signal x for each band. A gain correction section 33a does not perform correction of gain information when correlation ϕ
xy between the objective signal x and a reproduced signal y does not satisfy α xy xy
摘要翻译：解决的问题：提供能够防止编码为低比特率的频带的再现声音中的声音质量劣化的编码装置。解决方案：特征量化部分31对目标信号x的每个频带的信号进行特征量化。增益量化部分32基于在特征量化部分31中获得的每个频带的特征向量的信息和每个频带的目标信号x来量化每个频带的增益。当目标信号x和再现信号y之间的相关性 xy 不满足α<φ xy <β时，增益校正部分33a不执行增益信息的校正，并且当相关性φxy满足α<φ xy <β时，即当目标信号x和再现信号y的两个矢量之间的角度θ在预定的范围内时，执行量化增益信息的校正范围。版权所有（C）2008，JPO＆INPIT

9. 发明专利

JP2006201375A Audio encoding method and device 有权
标题翻译：音频编码方法和装置
公开(公告)号：JP2006201375A
公开(公告)日：2006-08-03
申请号：JP2005011737
申请日：2005-01-19
申请人： Toshiba Corp , 株式会社東芝
发明人： KIRIHARA MASAKI , OSADA SHIYOUKO
IPC分类号： G10L19/02 , H03M7/30
摘要： PROBLEM TO BE SOLVED: To improve compressibility by properly grouping sub-blocks included in a frame while correctly reflecting influence of a transient signal.
SOLUTION: A flatness measure calculation section 5 calculates flatness of a spectrum, sub-block by sub-block, on the basis of spectral data obtained by performing time-frequency conversion of an audio signal in units of sub-blocks a plurality of which are included in one frame. A grouping section 6 selects a sub-block having the largest calculated flatness among sub-blocks included in one frame as an independent block and groups the sub-blocks included in the one frame to form a group of the independent group and a group including at least two successive sub-blocks except for the independent block.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：通过适当地分组框架中的子块同时正确地反映瞬态信号的影响来提高压缩性。解决方案：平坦度测量计算部分5基于通过以多个子块为单位执行音频信号的时间 - 频率转换而获得的频谱数据来计算频谱的子块的子块的平坦度其中包括一帧。分组部分6选择在一帧中包括的子块中具有最大计算平面度的子块作为独立块，并且对包括在一帧中的子块进行分组以形成独立组的组，并且包括在至少两个连续的子块除独立块外。版权所有（C）2006，JPO＆NCIPI

10. 发明专利

JP2005024756A Decoding process circuit and mobile terminal device 审中-公开
标题翻译：解码过程电路和移动终端设备
公开(公告)号：JP2005024756A
公开(公告)日：2005-01-27
申请号：JP2003188500
申请日：2003-06-30
申请人： Toshiba Corp , 株式会社東芝
发明人： OSADA SHIYOUKO
IPC分类号： G10L19/02 , G10L19/00 , H03M13/37 , H04L1/00
摘要： PROBLEM TO BE SOLVED: To provide a decoding process circuit in which deterioration in output sound quality is suppressed even though an error is generated in audio data and to provide a mobile terminal device. SOLUTION: An AAC decoder 61 restores low and middle range frequency band PCM data LM from AAC data and outputs the restored PCM data LM and remaining SBR data to an SBR decoder 62. In accordance with the instruction of a control section 60, the SBR decoder 62 conducts a correcting process of the PCM data LM, up-sampling of the PCM data LM and a high frequency extending process based on the SBR data to obtain high frequency band PCM data H. The control section 60 conducts to determine whether an error is generated in the AAC data and the SBR data, and the control section 60 controls the SBR decoder 62 based on the decision result and the correction process of the PCM data LM, up-sampling of the PCM data LM and a high frequency expanding process based on the SBR data are performed. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：解决的问题：为了提供即使在音频数据中产生错误并且提供移动终端设备也能抑制输出声音质量劣化的解码处理电路。解决方案：AAC解码器61从AAC数据恢复低频和中频频带PCM数据LM，并将恢复的PCM数据LM和剩余的SBR数据输出到SBR解码器62.根据控制部分60的指令， SBR解码器62进行PCM数据LM的校正处理，PCM数据LM的上采样和基于SBR数据的高频扩展处理，以获得高频带PCM数据H.控制部分60进行确定是否在AAC数据和SBR数据中产生错误，并且控制部分60基于PCM数据LM的判定结果和校正处理来控制SBR解码器62，PCM数据LM的上采样和高频执行基于SBR数据的扩展处理。版权所有（C）2005，JPO＆NCIPI

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