This article is an article which designs about the digital stereo sound frequency modulated transmitter software.

本文是关于数字立体声调频发射机软件设计的文章.

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Using the sound frequency features extracted a knowledge base for the expert system is created.

依照提取的齿轮制造缺陷的声频特征建立了汽车变速器噪声故障诊断专家系统知识库.

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