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¡u¹L¹s²v¡v¡]Zero Crossing Rate¡A²ºÙ ZCR¡^¬O¦b¨CÓµ®Ø¤¤¡Aµ°T³q¹L¹sÂIªº¦¸¼Æ¡A¨ã¦³¤U¦C¯S©Ê¡G
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To avoid DC bias, usually we need to perform mean subtraction on each frame. Here is an straightforward example of ZCR:
We can use the function "frame2zcr" to simplify the above example:
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Yn°»´úÁnµªº¶}©l©Mµ²§ô¡A³q±`ºÙ¬°¡uºÝÂI°»´ú¡v¡]Endpoint Detection¡^©Î¡u»yµ°»´ú¡v¡]Speech Detection¡^¡A³Ì²³æªº¤èªk´N¬O¨Ï¥Îµ¶q©M¹L¹s²v¨Ó§P§O¡A¬ÛÃö²Ó¸`·|¦b«áÄò³¹¸`»¡©ú¡C
Audio Signal Processing and Recognition (µ°T³B²z»P¿ëÃÑ)