reference pitch的用法和樣例：
例句
- Thus, the FFR provides a noninvasive window to view neural processing of pitch at the level of the auditory brainstem.
結果表明，在四分之三的音調中，漢語受試者的基音跟蹤曲線較英語受試者平緩。 - The cepstrum method of speech pitch detection was analyzed carefully, and several shortcomings were pointed out when the method was realized digitally.
摘要對基音檢測的倒譜法進行了分析，指出其在基音檢測計算及其數字實現時存在不足。
