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    • 24. 发明授权
    • Method and apparatus for matching sound quality measurement sections of variable bandwidth multi-codec
    • 用于匹配可变带宽多编解码器的音质测量部分的方法和装置
    • US08117029B2
    • 2012-02-14
    • US11928557
    • 2007-10-30
    • Dae-Ho KimTae-Gyu KangKi-Jong KooDo Young KimHae Won Jung
    • Dae-Ho KimTae-Gyu KangKi-Jong KooDo Young KimHae Won Jung
    • G10L21/00
    • G10L25/69G10L19/18
    • Provided is a transmission apparatus for matching sound quality measurement sections of a variable bandwidth multi-codec. The apparatus includes a measurement section setting unit setting a measurement section, which is to be measured for sound quality, in units of time; a first conversion unit converting the measurement section into a measurement section in units of samples; and an information synthesis unit synthesizing information regarding the measurement section in units of samples with a digital original sound and outputting the synthesis result. In addition, provided is a method of matching a measurement section of a reference sound, based on which the end-to-end sound quality measurement of the variable bandwidth multi-codec is performed, and a measurement section of a sound produced by the variable bandwidth multi-codec in a real-time Internet multimedia service. Therefore, distortion of measurement results due to un-matching measurement sections can be reduced.
    • 提供了一种用于匹配可变带宽多编解码器的音质测量部分的发送装置。 该装置包括以时间为单位设置要测量声音质量的测量部分的测量部分设置单元; 第一转换单元,以样本为单位将测量部转换为测量部; 以及信息合成单元,以具有数字原始声音的样本为单位合成关于测量部分的信息,并输出合成结果。 此外,提供了一种将参考声音的测量部分与可变带宽多编解码器的端对端音质测量进行匹配的方法以及由变量产生的声音的测量部分 带宽多编解码器在实时互联网多媒体服务。 因此,可以减少由于不匹配的测量部分引起的测量结果的失真。
    • 26. 发明授权
    • Method and apparatus for controlling direct memory access
    • 用于控制直接存储器访问的方法和装置
    • US08037214B2
    • 2011-10-11
    • US11932718
    • 2007-10-31
    • In Ki HwangWoo Sug JungDo Young Kim
    • In Ki HwangWoo Sug JungDo Young Kim
    • G06F13/28H04L12/56
    • G06F13/32
    • Provided are a method and apparatus for controlling direct memory access. In the method, data to be transmitted are read and stored in response to a direct memory access controller (DMAC) operation request, and a portion of the data corresponding to an initial burst size is first transmitted to a data destination. After resetting a burst size according to a state of the data destination, another portion of the data corresponding to the reset burst size is second-transmitted to the data destination. If all the data are not transmitted through the first-transmission and the second-transmission, the second-transmission is repeated until all the data are transmitted. If all the data are transmitted through the first-transmission and the second-transmission, an interrupt signal is generated. Therefore, interrupt signals can be less generated, and thus the processor can access an external memory less frequently, thereby increasing system performance.
    • 提供一种用于控制直接存储器访问的方法和装置。 在该方法中,响应于直接存储器访问控制器(DMAC)操作请求来读取和存储要发送的数据,并且首先将与初始突发大小相对应的数据的一部分发送到数据目的地。 在根据数据目的地的状态复位突发大小之后,与复位突发大小对应的数据的另一部分被第二次发送到数据目的地。 如果所有的数据都不是通过第一次传输和第二次传输传输的,那么重复第二次传输,直到所有的数据被发送。 如果通过第一次传输和第二次传输传输所有数据,则产生一个中断信号。 因此,可以较少地产生中断信号,因此处理器可以较少地访问外部存储器,从而提高系统性能。
    • 28. 发明授权
    • Apparatus and method for measuring quality of sound encoded with a variable band multi-codec
    • 用可变频带多编解码器编码的声音质量的装置和方法
    • US07986634B2
    • 2011-07-26
    • US11857539
    • 2007-09-19
    • Tae-Gyu KangKi-Jong KooDae-Ho KimDo Young KimHae Won Jung
    • Tae-Gyu KangKi-Jong KooDae-Ho KimDo Young KimHae Won Jung
    • H04L12/26
    • G10L25/69G10L19/24
    • Provided are a method and apparatus for measuring sound quality in a variable band multi-codec. The sound quality measurement apparatus includes: a recording file receiving/generating unit receiving a first recording file in which a natural sound is recorded, and a second recording file obtained by converting the natural sound into digital data using the variable band multi-codec, receiving information obtained by encoding the natural sound using the variable band multi-codec, in the format of a Real Time Protocol (RTP) packet, unpacking the RTP packet, decoding the RTP packet using the variable band multi-codec, and generating a third recording file; a Mean Opinion Score (MOS) value calculating unit repeatedly selecting a file from among the first recording file, the second recording file, and the third recording file, or selecting two files from among the first recording file, the second recording file, and the third recording file, and calculating a MOS value by obtaining a difference between the selected results; and a MOS value comparison unit comparing a plurality of MOS values generated by the MOS value calculating unit, with each other, and detecting a cause of sound quality deterioration.
    • 提供了一种用于测量可变频带多编解码器中的声音质量的方法和装置。 声音测量装置包括:记录文件接收/生​​成单元,接收其中记录有自然声音的第一记录文件;以及第二记录文件,其通过使用可变频带多编解码器将自然声音转换为数字数据而获得,第二记录文件接收 使用可变频带多编解码器以实时协议(RTP)分组的格式编码自然声音获得的信息,解包RTP分组,使用可变频带多编解码器解码RTP分组,以及生成第三记录 文件; 平均意见得分(MOS)值计算单元,重复从第一记录文件,第二记录文件和第三记录文件中选择文件,或者从第一记录文件,第二记录文件和第二记录文件中选择两个文件 第三记录文件,并且通过获得所选择的结果之间的差来计算MOS值; 以及MOS值比较单元,将由MOS值计算单元生成的多个MOS值彼此进行比较,并且检测出音质劣化的原因。