Read the data from the voice file bluesky 1. wav (blue sky, white clouds, green sea), frame it, and calculate its short-term average zero-crossing rate.

Filename	Size	Update
短时平均过零率\bluesky1.wav	64044	2012-06-16
短时平均过零率\buffer2.m	530	2006-03-05
短时平均过零率\enframe.m	784	2013-10-24
短时平均过零率\frame.m	722	2013-03-15
短时平均过零率\frame2time.m	136	2013-10-21
短时平均过零率\mainDSPJGLL.m	1158	2018-09-02
短时平均过零率\pwelch_2.m	497	2013-06-08
短时平均过零率\segment.m	847	2007-11-17
短时平均过零率\SpecColorMap.m	1650	2008-11-06
短时平均过零率\stftms.m	655	2013-06-08
短时平均过零率	0	2018-09-02

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