Digital Audio Sound Principles

What kind of waves are sound waves?

• Electricity

• Pressure

• Light

• Radio

What is the unit that measures sound frequency in cycles per second?

• MIDI

• Dynamics

• Hertz

• Decibels

What is the standard range of human hearing?

• 2 Hz -20 Hz

• 2 Hz -20 kHz

• 20 Hz -20 kHz

• 20 Hz - 2 kHz

What are sounds that are above the human hearing range called?

• Infrasonic

• Subsonic

• Extrasonic

• Ultrasonic

What are sounds that are below the human hearing range called?

• Subsonic

• Infrasonic

• Suprasonic

• Supersonic

What is the unit that measures the loudness of a sound (not the intensity)?

• Bels

• Hertz

• Bytes

• Gain

How many decibels does it take for something to seem TWICE as loud?

• 3

• 6

• 10

• 2

What are the hairs in your ear that detect sounds and release chemicals called?

• Stereocilia

• Hammer

• Eardrum

• Cochlea

What word describes a "ringing in the ears"?

• Deafness

• Tinnitus

• Tannitus

• Tonnitus