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    • 8. 发明授权
    • Pitch lag estimation
    • 间距滞后估计
    • US07752038B2
    • 2010-07-06
    • US11580690
    • 2006-10-13
    • Lasse LaaksonenAnssi RamoAdriana Vasilache
    • Lasse LaaksonenAnssi RamoAdriana Vasilache
    • G10L11/04G10L19/00
    • G10L25/90G10L19/09G10L25/06
    • Autocorrelation values are determined as a basis for an estimation of a pitch lag in a segment of an audio signal. A first considered delay range for the autocorrelation computations is divided into a first set of sections, and first autocorrelation values are determined for delays in a plurality of sections of this first set of sections. A second considered delay range for the autocorrelation computations is divided into a second set of sections such that sections of the first set and sections of the second set are overlapping. Second autocorrelation values are determined for delays in a plurality of sections of this second set of sections.
    • 自相关值被确定为用于估计音频信号的段中的音调滞后的基础。 用于自相关计算的第一被考虑的延迟范围被划分为第一组部分,并且为该第一组部分的多个部分中的延迟确定第一自相关值。 用于自相关计算的第二被考虑的延迟范围被划分成第二组部分,使得第一组的部分和第二组的部分重叠。 第二自相关值是针对该第二组部分的多个部分中的延迟而确定的。