Explanation:
Voice Modulation is when you control or adjust your voice. It's when you choose to go louder or softer, faster or slower, dramatic or emotional. Basically, voice modulation means using your voice and tone to communicate your message more effectively.
Modulation is when you control or adjust something, like when you lower your voice to a loud whisper in order to make what you're saying more dramatic and mysterious. The noun modulation has several meanings, including a change of key in music or of the sound of a person's voice.
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