1
2
		3
4										5
								6
7
						8
							9

Across 1. a drawing or photograph of patterns produced by sounds played into a spectrum analyzer 2. a scientist who specializes in the human mind and behavior 3. a system of writing for the blind made up of dots or points to represent letters and numbers to be read by touch: named after Louis Braile who invented it 7. a device for sending out communication signals 8. the science of hearing 9. a device such as a radio, telephone, or television set that recieves signals and makes them understandable

Down 1. a machine that analyzes sound and produces a visual image so that the patterns in the sound can be seen and studied 4. a small tooth 5. a device used to find the source of underwater sounds 6. the highness or lowness of a tone or sound