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HT46R47對AC過零信號進行檢測-HT46R47 of AC zero-crossing detection signal
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主要功能为通过单片机IO口检测交流过零信号，本程序测量50hz和60hz交流过零信号并通过LED指示-Main function of microcontroller IO port through the exchange of zero-crossing detection signal, this procedure measured 50hz and 60hz AC zero-crossing signals and instructions through the LED
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基于短时能量和过零率的语音端点检测 只能实现单个词的语音端点检测-Based on short-term energy and zero crossing rate of voice activity detection
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交流电频率检测,及通过过零点来进行计数定时-AC frequency detection, and by zero-crossing point for counting timing
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