To make your voice sound raspy and gravelly, practice vibrating your vocal chords like you’re croaking like a frog. [3] X Research source Also practice making bah noises like you’re a sheep, because this will also vibrate your vocal chords. After practicing making sounds, start incorporating that same raspy quality into your speaking voice.
When you’re speaking, try to make your voice crack as you say certain words, and then make your voice fade out briefly so it’s quieter than usual. Alternate between doing this and speaking in your regular (but hoarse) voice.
Make sure you continue alternating between your voice cracking, fading, whispering, and speaking hoarsely at a normal volume. When you transition between these different voice effects, try to make the transition as natural as possible so people don’t know you’re forcing it.
Don’t cough too much, but throw in a few dry coughs if you’ve been talking for a while. A cough is created when your body forcefully expels air from the lungs, which is different from vibrating your vocal chords to create speech, meaning you can still cough if you’ve lost your voice. [6] X Trustworthy Source Mayo Clinic Educational website from one of the world’s leading hospitals Go to source
Try using your body language more, such as nodding or shaking your head, instead of talking when you’re communicating with someone.
You can alternate between speaking with voice effects and writing (to rest your voice) to support the impression that you’ve got laryngitis.