Here's the buzz Almost every consonant comes in voiced and unvoiced versions, another useful thing for an editor to know. Say digital slowly, paying careful attention to how your tongue flicks against the ridge in the front of the roof of your mouth. In fact, the sounds are made with identical movements. Say tuh and duh-the only difference is that duh has your vocal cords buzzing before the consonant, and tuh starts the buzzing after. Say tots' toys.
Unvoiced consonants have very little of a person's voice character.
If the room acoustics and background match, you can often substitute one actor's unvoiced consonant for the same one from a different actor. You can sometimes swap voiced and unvoiced consonants when you need to create new words. The hisses this friction makes will jump right out at you when you shuttle or scrub slowly through voice track. Practice hearing this hiss. Once you're used to it, you'll be able to spot the start and end of any of these consonants quickly.