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¤Wz¤½¦¡©ÒÂà´«¥X¨Óªº¥bµ®t¡A¤]¬O MIDI µ¼ÖÀɮשҥΪº¼Ð·Ç¡C±q¤Wz¤½¦¡¤]¥i¥H¬Ý¥X¡G
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- ¨C¦V¤W¬Û¹j¤@Ó¥þµ¶¥¡AÀW²v·|Åܦ¨¨â¿¡C¨Ò¦p¡A¤¤¥¡ la ¬O 440 Hz¡]69 Semitones¡^¡A¦V¤W¥²¾¤@Ó¥þµ¶¥¤§«á¡AÀW²v´NÅܦ¨ 880 Hz¡]81 Semitones¡^¡C
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¤W¦C½d¨Òªº¤U¹Ï¡A¬O±q¡uµØ¡vªºÃý¥Àªþªñ§ì¥X¨Óªº 512 ÂIªºµ®Ø¡A¨ä¤¤¬õ½u³¡¤À¥]§t¤F 6 Ó°ò¥»¶g´Á¡AÁ`¦@¦û±¼¤F 757 ³æ¦ìÂI¡A¦]¦¹¹ïÀ³ªº°ò¥»ÀW²v¬O fs/(757/6) = 16000/(757/6) = 126.816 Hz¡A¬Û·í©ó 47.463 ¥bµ¡A»P¡u¤¤¥¡ La¡v®t¤F 21.5 Ó¥bµ¡A±µªñ¦ýÁÙ¤£¨ì¨âÓ¥þµ¶¥¡]24 Ó¥bµ¡^¡C
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- ¨k¥Íªºµ°ª½d³ò¬ù¦b 35 ~ 72 ¥bµ¡A¹ïÀ³ªºÀW²v¬O 62 ~ 523 Hz¡C
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Audio Signal Processing and Recognition (µ°T³B²z»P¿ëÃÑ)