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录音磁带的“调制噪声”(Modulation No-ise)主要是由于磁带磁粉层的不均匀而引起的,是在录音过程中,随着起伏的声频信号被记录在磁带上而产生的一种起伏噪声。在听觉效果上是与信号同时出现的频率较低的一种
The tape’s Modulation No-ise is mainly due to the unevenness of the magnetic layer of the magnetic tape, a kind of bump noise that occurs during the recording as the bumpy audio signal is recorded on the tape . In the auditory effect is the same signal with the frequency of the lower one