A change in stress, pitch, loudness, or tone of the voice; an inflection of the voice.
变音在语调、音高、音量或音调上的变化; 声音的一种转调
The amplitude or loudness of a sound.
音量声音的响度或强度
The act or an instance of gradually diminishing in brightness, loudness, or strength until actual disappearance occurs.
逐渐消失在亮度、响度或精力上逐渐减弱直至全部消失的活动或例子
