This thesis propose a new method of pitch detection based on the local maximum map of the autocorrelation function, and a pitch marking algorithm by L-R decision.

• 关于基周撷取，本文提出一个新方法，是运用自我相关函数的局部极大值地图去撷取；关于基周标位，本文也提出一个演算法，是利用左右山峰去标位。