名词
中文翻译：纯音平均数同义词
同义词：
['pure-tone average', 'fundamental frequency average', 'fundamental frequency average']
例句：
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1. The pure tone average of the speech signal is an important factor in speech recognition.
语音信号的纯音平均是语音识别的一个重要因素。
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2. The fundamental frequency average of the speech signal is used to measure the quality of the speech.
语音信号的基本频率平均用于衡量语音的质量。
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3. In music production, the pure tone average is used to determine the optimal recording level for each instrument.
在音乐制作中，纯音平均被用来确定每种乐器的最佳录音水平。