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ＮＥＣ推出数字ＦＭ激励器ＨＰＢ－３０７３传统的调频立体声广播用激励器，一直都由模拟电路构成。而日本电气公司（ＮＥＣ）推出的ＨＰＢ－３０７３型数字ＦＭ激励器，从音频输入到音频限制用低通滤波器（ＬＰＦ）、预加重网络、立体声调制和ＦＭ调制部分全都实行数字运...
NEC Introduces Digital FM Exciter HPB-3073 The traditional FM stereo radio actuator has been composed of analog circuits. The Nippon Electric Company (NEC) introduced the HPB-3073 digital FM exciter, from the audio input to the audio limit with a low-pass filter (LPF), pre-emphasis network, stereo modulation and FM modulation part of all the implementation of digital ...