Using a foreign language or accent is another effective way of disguising a voice on the telephone. Practicing full conversations is highly recommended to avoid breaking the accent. If someone, however, isn't very good at accents, he can hold his nose while speaking on the phone to produce a nasally sound.
Pretending to have cold or changing pitch can also be incredibly effectual in disguising one's voice on the phone. If nothing else works, an individual can try muffling the sound of his voice by putting a shirt, handkerchief or a towel on the receiver.Learn more about Mobile