Language is one of the vital elements of interaction skills. Besides good Verbal communication skills, one must also have clear and crisp oral communication skills. It is application of musical skills of your voice. Varying the rhythm, tone, inflection and volume of your voice will give contextual clarity during persuasion.
Difference between Oral, Verbal and Vocal Communication
Oral communication is about how you use your voice and its elements while verbal communication is how you use language skills to convey, convince and consider others' opinions, beliefs and feelings. The only difference between vocal and oral communication is in vocal both the content and voice is emphasized while in vocal communication the emphasis is only on the use of voice.
Oral Communication is Prosody of a Language
When the phrase, "It was an interesting speech" with a boring tone of voice can actually mean that the presentation was not interesting. So, during persuasion, using right pitch, tone, volume and rate or speech, which is called the prosody of the language, is as important as using right vocabulary and valid facts. Prosody can bring liveliness, enthusiasm and energy to the presentation.
Verbal persuasion is called the prosody of a language that includes vocal communication, which is a combination of linguistic and musical skills that gives meaning to the language through a blend of paralanguage skills such Inflection, rhythm and tone.