Koltun V M, Trusov Iu S
Med Tekh. 1988 Mar-Apr(2):32-9.
Most of manufactured ECG signals telephone transmitting systems with frequency modulation have not optimal parameters, reducing the noise immunity and resulting in signal distortion with large damping in telephone lines. The theoretical and experimental analysis permits the optimization of the modulation index of the translator and the band-pass of the receiver and is realized through the recommendations to constructors.
大多数采用频率调制的人造心电图信号电话传输系统没有优化的参数,降低了抗噪声能力,并导致电话线中信号出现大幅衰减的失真。理论和实验分析允许对转换器的调制指数和接收器的带通进行优化,并通过向制造商提出建议来实现。