Equivalent input noise(等效输入噪声)：≤-134dBm Residual Noise(剩余噪声)：≤-90dBm
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CMRR（共模信号抑制比）和EIN（等效输入噪声）指标均已接近理想值。另外，话筒和线路输入可提供60dB的增益调整范围，这就是说该线路输入强信号或话筒的信号均不会出现问题。
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美国国家标准学会（ANSI，American National Standards Institute） 等效输入噪声(EIN, Equivalent Input Noise) 助听器制造商软件协会(HIMSA, Hearing Instrument Manufacturer's Software Association) ..
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等效输入噪声电流 [电] Equivalent Input Noise Current
等效输入噪声电压 Equivalent Input Noise Voltage
话筒输入等效输入噪声 Mic Equivalent input noise
等效输入噪声温度 equivalent input noise temperature
等效噪声输入 equivalent noise imput ; ENI
等效输入宽带噪声电流 equivalent input wideband noise current
根据光接收机前端等效电路模型，建立了噪声系数与等效输入噪声电流谱密度的关系。
Based on the equivalent circuit model of a two-port optical receiver front-end, the relationship between the equivalent input noise current spectral density and the noise figure is analyzed.
并运用该模型预测道路交通噪声的等效声级，把预测因子作为样本输入到网络模型，噪声等效声级作为样本输出。
Then use this model to predict equivalent continual sound level of road traffic noise, the fluence factors as the traffic flowing and the equivalent acoustic levels were output.
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