Chapter 4 (Sine Wave)

Question 1

Refers to the periodic sinusoidal oscillation/motion of an object

Answer 1

Simple harmonic motion

Question 2

What is an example of a simple harmonic motion?

Answer 2

Pendulum, mass spring oscillator, tuning fork

Question 3

What are ways that pressure can be measured in?

Answer 3

Amplitude, intensity, displacement, decibels, volts

Question 4

Wave that is periodic (repeats), single frequency and sounds like a pure tone

Answer 4

Simple wave

Question 5

Wave that is periodic or aperiodic, multiple frequencies, and may sound tonal or not

Answer 5

Complex wave

Question 6

All complex sounds can be broken down into their pure tone components

Answer 6

Ohm’s law of acoustics

Question 7

lowest frequency pure tone component present in a complex periodic sound

Answer 7

Fundamental frequency

Question 8

integer multiples of f0

Answer 8

Harmonic

Question 9

any frequency greater than f0

Answer 9

Overtone

Question 10

successive doubling of frequency

Answer 10

Octave

Question 11

a complex waveform can be broken down (analyzed) into it’s pure tone components; want to know what pure tones are in the complex waveform

Answer 11

Fourier analysis

Question 12

a complex waveform can be formed (synthesized) by combining pure tone components

Answer 12

Fourier synthesis

Question 13

Two waves are exactly the same (frequency, amplitude, & phase)
→ the amplitude doubles

Answer 13

Perfect summation

Question 14

Two waves are exactly the same (frequency & amplitude) but 180 degrees of phase difference
→ No sound because they are cancelled out, which is a basic noise cancellation technique

Answer 14

Perfect cancellation