Module 4

Question 1

What waves is any sound wave that is not a sine but it itself is composed of simple sinusoids that can in amplitude ,frequecny , and phase?
- 2 or more sine ways

Answer 1

Complex Waves

Question 2

If you add sound waves of the same _____ and _______, you will still get a sine wave of a pure tone but higher amplitude

Answer 2

frequency and phase

Question 3

What waveforms were studied and analyzed by a French mathematician named Joseph Fourier ?

Answer 3

Complex

Question 4

( Blank) is a complex waveform can be decomposed or analyzed to determine the amplitudes, frequencies, and phases of the each other ·

Answer 4

Fourier Analysis

Question 5

( Black) is a inusoids in a complex wave have to meet a mathematical requirement

Answer 5

Harmonic relation

Question 6

What series of waves that can differ in amplitude , , frequency, & phase
-can be derived by a process that is calledFourier’s analysis

Answer 6

Fourier series

Question 7

T / F
Are simple sound waves consider periodic ?

Answer 7

True

Question 8

How can a wave be consider complex?

Answer 8

It has 2 or more sine waves

Question 9

( Blank) is
a wave that repeats itself at regular intervals over time
-can be sinusoidal or complex

Answer 9

Periodic wave

Question 10

(Blank) is a wave in which individual cycles do not take the same amount of time to occur

Answer 10

Aperiodic waveform

Question 11

Line ( Power Spectra displays the ______ and the relative _______ of the component sine waves

Answer 11

Frequency and amplitude

Question 12

How is the Line ( Power Spectra unique ?

Answer 12

Y axis Amplutide
X axis Frequency
taken from a moment in time , no time component or phase
The blue lines are sine waves
All together they are complex waves

Question 13

( Blank) waves consist of some number of simple sinusoids that are summed
* But the sinusoidal components cannot be selected randomly if the resultant sound wave is to be periodic

Answer 13

Complex periodic

Question 14

Complex periodic must satisfy a basic mathematical requirement called a

Answer 14

Harmonic relation

Question 15

What reaction has Each sinusoid in the series must be an integer multiple of the lowest in the series?

Answer 15

Harmonic Relation

Question 16

Integer multiple of
lowest = 100 Hz: Components are?

Answer 16

100,200,300,400,500

Question 17

When a harmonic relation exists among frequency components, the series of frequencies is called a ?

Answer 17

harmonic series

Question 18

All of the sinusoids in the series are called

Answer 18

harmonic

Question 19

The first harmonic is always the ________ frequency or F0.
Will create a sawtooth waveform

Answer 19

fundemental

Question 20

What only allowing sertain waveforms to come through?

Answer 20

Bandlimiting

Question 21

What A complex periodic wave with energy only at the odd harmonics ?

Answer 21

Triangular wave

Question 22

What waveform is Absent of periodicity . it is usually impossible to predict what the wave will look like from one time to the next. Its vibratory motion is random?
notes : Energy will be present but all over the place . Will not be able to create a line spectra

Answer 22

Aperiodic Waveform

Question 23

what vibrations that occur as individual events, producing a burst of noise for a short duration ?
- Example: book hitting table

Answer 23

transient

Question 24

What vibrations that occur continuous
- Example: hissing

Answer 24

random/continuous

Question 25

What one in which energy is present at all frequencies between certain lower and upper frequency limits?
example: white noise or fricatives
like the ‘sh’ phoneme

Answer 25

Continuous Spectra

Question 26

T/ F
Harmonics are not part of aperiodic sounds

Answer 26

True