Noise AM噪声调幅noisen.噪声；喧闹声；响声vt.谣传vi.大声说话；发出噪音noise communication噪声通讯noise masking level噪声掩蔽级noise-free signal无噪声信号noise gain analyzer噪声增益分析仪Noise Output Device噪声输出装置noise of boiler fan锅炉风机噪声noise ranging sonar噪声测距声纳noise power density噪声功率谱noise resistance Rn噪声电阻Rnnoise counteraction噪声抵消