If you want to make an average man's voice sound stronger without altering its pitch, there are a few techniques you can try:
Posture and breathing: Good posture and proper breathing techniques can help enhance the resonance and power of your voice. Stand tall, with your shoulders relaxed and your chest open. Breathe deeply from your diaphragm, allowing your voice to resonate more effectively.
Voice projection: Practice projecting your voice by speaking from your diaphragm and using your chest as a resonating chamber. This can give your voice a more robust and authoritative quality. Focus on speaking with confidence and using controlled breath support.
Articulation and enunciation: Pay attention to your articulation and clarity of speech. Pronounce words fully and clearly, avoiding mumbling or slurring. This can make your voice sound more assertive and powerful.
Speaking pace: Slow down your speech slightly, as speaking too quickly can make your voice sound weaker. Take your time with each word and sentence, emphasizing key points.
Vocal exercises: Engage in vocal warm-up exercises to strengthen your voice. These exercises can include humming, lip trills, tongue twisters, and vocal range exercises. They help to develop vocal control and resonance.
Confidence and assertiveness: Cultivate confidence and assertiveness in your speech. Believe in what you say, speak with conviction, and maintain a strong presence. Confidence can significantly impact the perception of your voice.
It's important to note that while these techniques can help you sound more confident and project strength in your voice, they may not drastically alter the natural pitch of your voice. The pitch of a voice is primarily determined by the physical characteristics of one's vocal cords and anatomy.