Detection of phrase boundaries in Japanese by low-pass filtering of fundamental frequency contours
Detection of phrase boundaries in Japanese by low-pass filtering of fundamental frequency contours
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通过基频轮廓的低通滤波检测日语中的短语边界
DOI：
10.1109/icslp.1996.607726
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
K. Hirose
中科院分区：
文献类型：
--
作者：
A. Sakurai;K. Hirose
主要的句法边界通常伴随着基频（F/sub 0/）轮廓的短语成分的上升。因此，检测这种上升对语音识别过程有很大帮助。我们开发了一种方法来检测语法边界与短语组件上升（以下简称短语边界），基于压缩的重音分量的F/子0/轮廓（在对数尺度），使用低通滤波器。在该方法中，F/sub 0/ contours被视为时域信号，由于它们的频率内容不同，可以大致分离为短语和口音分量。每当滤波后的F/sub 0/轮廓（H）的导数出现显著上升时，就检测到短语边界。藤崎Hirose，1984）。该方法设法检测到约77%的手动检测短语边界，但插入率相对较高。通过使用作者提出的部分AbS方法（K. Hirose和A. Sakurai，1996）。
Major syntactic boundaries are often accompanied by a rise in the phrase component of the fundamental frequency (F/sub 0/) contour. Detecting such rises, therefore, can be significantly helpful to the speech recognition process. We developed a method to detect syntactic boundaries with phrase component rise (henceforth, phrase boundaries), based on the compression of the accent component of the F/sub 0/ contour (in logarithmic scale), using a low pass filter. In this method, F/sub 0/ contours are viewed as signals in the time domain, which can be roughly separated into phrase and accent components due to their different frequency contents. Phrase boundaries are detected whenever a significant rise occurs in the derivative of the filtered F/sub 0/ contour (H. Fujisaki a K. Hirose, 1984). The method managed to detect about 77% of manually detectable phrase boundaries, though with a relatively high insertion rate. The insertion rate can be reduced by using the partial AbS method, proposed by the authors (K. Hirose and A. Sakurai, 1996).