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Volume, the relative loudness of a speaker’s voice while delivering a speech, is usually the most obvious vocal element we notice about a speaker, and with good reason. We need to hear the speaker at a comfortable level. The proper volume for delivering a speech is somewhat louder than that of normal conversation. Just how much louder depends on three factors: (1) the size of the room and of the audience, (2) whether or not you use a microphone, and (3) the level of background noise. Speaking at the appropriate volume is critical to how credible your listeners will perceive you to be, so check that audience members can hear you. Be alert to signals that your volume is slipping or is too loud and make the necessary adjustments.