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    • 39. 发明授权
    • Sound quality correcting apparatus and sound quality correcting method
    • 声音质量校正装置和音质校正方法
    • US08837744B2
    • 2014-09-16
    • US13188186
    • 2011-07-21
    • Hiroshi YonekuboHirokazu Takeuchi
    • Hiroshi YonekuboHirokazu Takeuchi
    • H01R29/00G10K11/178H04R3/04H04R1/02
    • G10K11/1782G10H2210/046G10H2250/235G10K11/178H04R1/028H04R3/04
    • A sound quality correcting apparatus includes: an input module; a feature quantity calculator; a score calculator; a modulation spectrum power calculator; a score corrector; and a signal corrector. The input module receives an input audio signal. The feature quantity calculator calculates feature quantities of the input audio signal for each of a plurality of first intervals having a certain time length. The score calculator calculates a score value for each the first interval based on the feature quantities. The modulation spectrum power calculator calculates a power value, at a certain modulation frequency, of a modulation spectrum of the input audio signal. The score corrector corrects score values in the plurality of first intervals that belong to a second interval if a power value calculated in the second interval is larger than or equal to a certain value. The signal corrector corrects the audio signal based on the score values.
    • 音质校正装置包括:输入模块; 特征量计算器 分数计算器 调制频谱功率计算器; 分数校正器 和信号校正器。 输入模块接收输入音频信号。 特征量计算器计算具有一定时间长度的多个第一间隔中的每一个的输入音频信号的特征量。 分数计算器基于特征量计算每个第一间隔的得分值。 调制频谱功率计算器以一定的调制频率计算输入音频信号的调制频谱的功率值。 如果在第二间隔中计算的功率值大于或等于某一值,则分数校正器校正属于第二间隔的多个第一间隔中的分数值。 信号校正器根据分数值校正音频信号。