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本文讨论在基音提取中引入自适应预滤波,即根据前数帧对基音的估值,选用截止频率不同的预滤波器。对三电平自相关法应用的结果表明,这是有效的和可行的。本文还提出了一种新的用作比较用标准结果的方法。
This article discusses the introduction of adaptive pitch filtering in the pre-filter, which is based on the first few frames of the pitch estimate, use different cut-off frequency of the pre-filter. The results of applying the three-level autocorrelation method show that this is valid and feasible. The paper also presents a new method for comparison as a standard result.