Hallucinating!
A person who studies sound is called an acoustician.
The length of time a person is exposed to sound is called "duration of exposure." This refers to the amount of time a person is subjected to noise or sound levels that can potentially affect their hearing.
I think they called is sound cause god wanted it to be sound not anything else that's all why does it matter about why they named it sound? It's dumb to see the question isn't please like if you agree! P.S. I see you :-) !!!!!!
A person who cannot see is called a blind person.
Obnoxious
Hearing a sound.
They are called Mediums.
It's called sound, http://en.wikipedia.org/wiki/Speed_of_sound
Psychic,
It's called a clapper board. It is for synchronizing the sound track to the movie track. The sound of the clap can be heard on the sound track and can be seen on the film track. See the link for more interesting information.
The Production Sound Mixer on a movie set is the person in charge of the Sound Department. Their main function is to make all the decisions about how to record the dialog and sound effects for the movie. They also are the person who operates the recorder that captures the sound coming from the microphones used to record the sound. The typical movie sound department will also have a person who is called the Boom Operator, who is the person who holds a boom pole and microphone over the actors while they talk, as well as one or more sound assistants.
A traveler