22 Multiple choice questions
- A transmitter of vibration from a sound source to a receiver (ear or microphone). Must be elastic for vibration to take place.
- 1/100th of a chromatic semitone. It is the unit most commonly used to represent pitch deviation.
- The inability to perceive certain frequencies and amplitudes which are within the common limits of perception.
frequency at which a body tends to vibrate due to its natural
characteristics of size, shape, molecular composition, and the stress
the body is under.
- The sound produced by sinusoidal vibration or oscillation.
- An electronic music instrument that uses select tones amplifiers and filters to create new musical sounds.
- The tendency of a displaced body to overshoot its point of rest.
point in space where a number of molecules which have been set into
motion bunch up causing an unusual number of molecules to occupy the
- Any form of to-and-fro motion
transmission of vibration from one body to another, usually through
air. The frequency of the first body must be very near the frequency of
the second body.
vibration, the motion is in a straight line and is periodic (repeats
itself in equal periods of time even thought the distance traveled gets
shorter and shorter. The motion is fastest as it passes its center point
of rest and has moments at each extreme when it is motionless.
Perceived as a pure tone and results in a sine wave when graphed.
- Our perception of amplitude. The greater the amplitude, the greater the perceived sound.
- Our perception of frequency. The greater the frequency, the higher this is.
- A perceived, aural psychological sensation produced by vibration
number of cycles (complete vibrations) which take place in a fixed
period of time. An acoustical definition is the number of sound waves
passing a given point in one second.
point at which the usual number of molecules which occupy a given space
are temporarily out of position, causing a partial vacuum to occur.
- The tendency of a displaced body to return to its point of rest.
- The distance through which a vibrating body moves. The amount of displacement of a vibrating body.
- The bouncing back of sound waves as they strike a surface more dense than that in which they are traveling.
- A graph of the simplest form of vibration showing motion in time and space.
- Sound waves which have been reflected.
- A unit of sound intensity.