22 True/False questions

Amplitude → The distance through which a vibrating body moves. The amount of displacement of a vibrating body.

Reflection → The bouncing back of sound waves as they strike a surface more dense than that in which they are traveling.

Momentum → The tendency of a displaced body to overshoot its point of rest.

Simple Harmonic Motion → Simple 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.

Elasticity → The bouncing back of sound waves as they strike a surface more dense than that in which they are traveling.

Sine Wave → A graph of the simplest form of vibration showing motion in time and space.

Pitch → Our perception of frequency. The greater the frequency, the higher this is.

Vibration → Any form of toandfro motion

resonant frequency → The 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.

Frequency → The 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.

Synthesizer → A unit of sound intensity.

Cent → 1/100th of a chromatic semitone. It is the unit most commonly used to represent pitch deviation.

Decibel → A unit of sound intensity.

Sine Tone → A graph of the simplest form of vibration showing motion in time and space.

Transmitting media → A transmitter of vibration from a sound source to a receiver (ear or microphone). Must be elastic for vibration to take place.

Rarefaction → a point at which the usual number of molecules which occupy a given space are temporarily out of position, causing a partial vacuum to occur.

Resonance → The 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.

Loudness → Our perception of amplitude. The greater the amplitude, the greater the perceived sound.

Sound → A perceived, aural psychological sensation produced by vibration

Compression → A 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 same space.

Hearing Loss → The inability to perceive certain frequencies and amplitudes which are within the common limits of perception.

Echoes → A unit of sound intensity.