In the audio titled "Greetings in English", a friendly male voice guides the listener through various casual ways to say hello. The speaker's tone is welcoming and informal, introducing each greeting with warmth and familiarity. The audio covers standard greetings, as well as more colloquial and relaxed ways to say hello. The speaker's voice is clear, and he articulates each word distinctly, making it easy for listeners to understand and replicate these greetings. His approachable demeanor gives the impression that this audio is designed to assist listeners in feeling more comfortable when using these English greetings in their day-to-day interactions.