Tremolo属于基于幅值变化的音效处理。基于幅值变化的音效处理相对来说较为简单而且也不易产生背景噪音。其效果即是输出的声音时响时轻，有颤动的感觉。给人一种抖动的感觉。 -Tremolo is based on changes in the amplitude of sound processing. Based on changes in the amplitude of audio processing is relatively simple and easily backgroun