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    • 34. 发明授权
    • Audio signal processing apparatus
    • 音频信号处理装置
    • US07236933B2
    • 2007-06-26
    • US10721167
    • 2003-11-26
    • Norihiko FuchigamiShoji UenoYoshiaki Tanaka
    • Norihiko FuchigamiShoji UenoYoshiaki Tanaka
    • G10L21/04
    • G10L19/008G10L19/04H04B1/66H04S1/007
    • In an audio signal encoding apparatus, a first audio signal and a second audio signal are added into an addition-result signal. The first audio signal is subtracted from the second audio signal to generate a subtraction-result signal. A first difference signal is generated which represents a difference in the addition-result signal. A second difference signal is generated which represents a difference in the subtraction-result signal. A plurality of first predictors have different prediction characteristics respectively, and are responsive to the first difference signal for generating first different prediction signals for the first difference signal, respectively. A plurality of first subtracters operate for generating first prediction-error signals representing differences between the first difference signal and the first different prediction signals, respectively. A first minimum prediction-error signal representative of a smallest difference is selected from among the first prediction-error signals. A plurality of second predictors have different prediction characteristics respectively, and are responsive to the second difference signal for generating second different prediction signals for the second difference signal, respectively. A plurality of second subtracters operate for generating second prediction-error signals representing differences between the second difference signal and the second different prediction signals, respectively. A second minimum prediction-error signal representative of a smallest difference is selected from among the second prediction-error signals.
    • 在音频信号编码装置中,第一音频信号和第二音频信号被加到相加结果信号中。 从第二音频信号中减去第一音频信号以产生减法结果信号。 产生表示加法结果信号的差的第一差值信号。 生成表示减法结果信号的差的第二差分信号。 多个第一预测器分别具有不同的预测特性,并且响应于第一差分信号分别产生用于第一差分信号的第一不同预测信号。 多个第一减法器用于分别产生表示第一差分信号和第一不同预测信号之间的差异的第一预测误差信号。 从第一预测误差信号中选择表示最小差的第一最小预测误差信号。 多个第二预测器分别具有不同的预测特性,并且响应于第二差分信号分别产生用于第二差分信号的第二不同预测信号。 多个第二减法器用于分别产生表示第二差分信号和第二不同预测信号之间的差异的第二预测误差信号。 从第二预测误差信号中选择代表最小差的第二最小预测误差信号。
    • 35. 发明授权
    • Audio signal processing apparatus
    • US07092876B2
    • 2006-08-15
    • US10721161
    • 2003-11-26
    • Norihiko FuchigamiShoji UenoYoshiaki Tanaka
    • Norihiko FuchigamiShoji UenoYoshiaki Tanaka
    • G10L19/06
    • G10L19/008G10L19/04H04B1/66H04S1/007
    • In an audio signal encoding apparatus, a first audio signal and a second audio signal are added into an addition-result signal. The first audio signal is subtracted from the second audio signal to generate a subtraction-result signal. A first difference signal is generated which represents a difference in the addition-result signal. A second difference signal is generated which represents a difference in the subtraction-result signal. A plurality of first predictors have different prediction characteristics respectively, and are responsive to the first difference signal for generating first different prediction signals for the first difference signal, respectively. A plurality of first subtracters operate for generating first prediction-error signals representing differences between the first difference signal and the first different prediction signals, respectively. A first minimum prediction-error signal representative of a smallest difference is selected from among the first prediction-error signals. A plurality of second predictors have different prediction characteristics respectively, and are responsive to the second difference signal for generating second different prediction signals for the second difference signal, respectively. A plurality of second subtracters operate for generating second prediction-error signals representing differences between the second difference signal and the second different prediction signals, respectively. A second minimum prediction-error signal representative of a smallest difference is selected from among the second prediction-error signals.
    • 40. 发明授权
    • Signal encoding apparatus, audio data transmitting method, audio data recording method, audio data decoding method and audio disc
    • 信号编码装置,音频数据发送方法,音频数据记录方法,音频数据解码方法和音频盘
    • US06560403B1
    • 2003-05-06
    • US09238727
    • 1999-01-28
    • Yoshiaki TanakaNorihiko FuchigamiShoji Ueno
    • Yoshiaki TanakaNorihiko FuchigamiShoji Ueno
    • H04N591
    • G11B20/10G10H1/0041G11B27/034G11B27/105G11B27/3027G11B27/329G11B27/34G11B2020/10592G11B2220/211G11B2220/213G11B2220/2562
    • A format of data recorded in a DVD-Audio disc is composed of an audio manager (AMG) and a plurality of audio title sets (ATSs) following the AMG. A plurality of audio packs are arranged in each ATS. An audio signal indicating a musical composition is encoded to audio data in a signal processing circuit, and the audio data is arranged in the audio packs. The audio data of the audio packs are formatted in a DVD formatting unit with the AMG to be arranged in the ATSs following the AMG. Also, copyright information is arranged in an area of a control data block placed in a read-in area of the DVD-Audio disc. Table-of-contents (TOC) information indicating a top address of the audio data is automatically produced and is arranged in an empty area of the control data block reserved for the copyright information, in an area of the audio packs, in an area of the AMG or in an area of the ATSs. The AMG, the ATSs including the audio packs and the TOC information arranged at the data format in the DVD formatting unit are transmitted to a human editor through a transmission medium and is recorded in the DVD-Audio disc. Therefore, when the audio data is read out from the DVD-Audio disc, the audio data can be easily played back from the top position of the musical composition according to the TOC information.
    • 记录在DVD音频盘中的数据的格式由AMG之后的音频管理器(AMG)和多个音频标题组(ATS)组成。 在每个ATS中布置多个音频包。 指示音乐作品的音频信号被编码为信号处理电路中的音频数据,并且音频数据被布置在音频包中。 音频包的音频数据被格式化为DVD格式化单元,AMG将被安排在跟随AMG的ATS中。 此外,版权信息被布置在放置在DVD音频盘的读入区域中的控制数据块的区域中。 表示音频数据的顶部地址的内容表(TOC)信息被自动产生,并且被布置在音频包的区域中的版权信息保留的控制数据块的空白区域中 AMG或ATS的一个区域。 包括音频包的ATS和以DVD格式化单元的数据格式排列的TOC信息通过传输介质发送给人类编辑器,并被记录在DVD音频盘中。 因此,当从DVD音频盘读出音频数据时,可以根据TOC信息从音乐作品的顶部位置容易地重放音频数据。