As one of its elements. As the speaker does not need to have a voice to echo. Like a sweet sound of kangwan singer, but the use of sound in speech. Speakers should utter with confidence Powerful life. A good voice also will be able to pin the audience to listen speaker.
Sound is an element of speech. The speaker does not need to be a voice that sounds like a sweet echo of the singer. But the sounds of speech. The speech should be voiced out with confidence, energetic, lively addition to the great sound can freeze the listener to listen to the speaker.
As one component of a speech. The speaker doesn't have to have a voice echoes, echoing like sweet voice of the singer, but the sounds of speech, the speaker should make out with confidence. Energetic, lively