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    • 4. 发明公开
    • Technique for estimating particular audio component
    • Technik zurSchätzungeiner bestimmten Audiokomponente
    • EP2447939A2
    • 2012-05-02
    • EP11186826.1
    • 2011-10-27
    • Yamaha Corporation
    • Bonada, JordiJaner, JordiMarxer, RicardUmeyama, YasuyukiKondo, KazunobuGarcia, Francisco
    • G10L11/04
    • G10L25/90G10H2210/066G10H2210/091
    • Frequency detection section (62) identifies candidate frequencies (Fc(1) - Fc(N)) per unit segment (Tu) of an audio signal (x). First processing section (71) identifies an estimated train (RA) that is a time series of candidate frequencies (Fc(n)), each selected for a different one of the segments, arranged over a plurality of the unit segments and that has a high likelihood of corresponding to a time series of fundamental frequencies (Ftar) of a target component Second processing section (72) identifies a state train (RB) of states, each indicative of one of sound-generating and non-sound-generating states of the target component in a different one of the segments, arranged over the unit segments. Information generation section (68) generates frequency information (DF) per unit segment (Tu), the frequency information generated for each unit segment corresponding to the sound-generating state designating, as a fundamental frequency (Ftar) of the target component, a candidate frequency (Fc(n)) corresponding to the unit segment in the estimated train (RA), the frequency information generated for each unit segment corresponding to the non-sound-generating state being indicative of no sound generation.
    • 频率检测部分(62)识别音频信号(x)的单位片段(Tu)的候选频率(Fc(1)-Fc(N))。 第一处理部分(71)识别排列在多个单位段上的,对于不同的一个段选择的候选频率(Fc(n))的时间序列的估计列车(RA),并且具有 对应于目标分量的基频(Ftar)的时间序列的高可能性第二处理部分(72)识别状态列(RB),每个状态列(RB)表示发声和非声音产生状态之一 目标组件在不同的一个段中,布置在单元段上。 信息生成部(68)生成每单位片段(Tu)的频率信息(DF),对与指定的声音生成状态对应的每个单位片段生成的频率信息作为目标成分的基本频率(Ftar),候选 对应于估计列车(RA)中的单位段的频率(Fc(n)),对应于非声音产生状态的每个单位段产生的频率信息表示没有声音产生。
    • 9. 发明公开
    • Technique for suppressing particular audio component
    • Technik zurUnterdrückungvon bestimmten Audiokomponenten
    • EP2447944A2
    • 2012-05-02
    • EP11186824.6
    • 2011-10-27
    • Yamaha Corporation
    • Bonada, JordiJaner, JordiMarxer, RicardUmeyama, YasuyukiKondo, Kazunobu
    • G10L21/02
    • G10L21/0272G10H1/361G10H2210/066G10H2210/331G10H2250/021G10H2250/031G10L21/0208G10L25/90G10L2021/02087H04S7/30H04S7/40H04S2400/11H04S2420/07
    • A coefficient train processing section (33), which sequentially generates per unit segment (Tu) a processing coefficient train (G(t)) for suppressing a target component of an audio signal (x), includes a basic coefficient train generation section (42) and coefficient train processing section (44). The basic coefficient train generation section (42) generates a basic coefficient train where basic coefficient values corresponding to frequencies within a particular frequency band range (B0) are each set at a suppression value ( γ 0) that suppresses the audio signal while coefficient values corresponding to frequencies outside the particular frequency band range are each set at a pass value ( γ 1) that maintains the audio signal. The coefficient train processing section (44) generates the processing coefficient train, per unit segment, by changing, to the pass value ( γ 1), each of the coefficient values corresponding to frequencies other than the target component among the coefficient values corresponding to the frequencies within the particular frequency band range (B0).
    • 依次生成用于抑制音频信号(x)的目标分量的处理系数列(G(t))的单位片段(Tu)的系数列处理部(33),具有基本系数列生成部(42) )和系数列处理部(44)。 基本系数列生成部(42)生成基本系数列,其中对应于特定频带范围(B0)内的频率的基本系数值分别设定为抑制音频信号的抑制值(³0),同时系数值对应 到特定频带范围之外的频率分别设置为保持音频信号的通过值(³1)。 系数列处理部(44)通过将通过值(³1)变更为与通过值(³1)相对应的系数值,生成对应于与 在特定频带范围(B0)内的频率。