Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

VOL 1 > Appendix A (Nature Of Sound) > Flashcards

Appendix A (Nature Of Sound) Flashcards

1
Q

What us the nature of sound comprised of?

A

Acoustic energy being transmitted through a medium and perceived by a receiver in form of sound waves

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are sound waves?

A

Compression waves that are created by a physical vibration source and through the air to a receiver.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are the five sound wave basic qualities?

A

Frequency, wavelength, amplitude, waveform, and phase.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is high and low pressure called

A

High pressure crest

Low pressure trough

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is frequency

A

The number of times per second the cycle of the Soundwave repeats

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is frequency measured in

A

Hertz

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the audible hertz range for humans

A

20hz to 20000hz

But most pitches are below 8000

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is wavelength

A

The physical distance covered by one complete cycle of a sound wave

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What calculated wavelength

A

Speed of sound ÷ frequency

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the speed of sound

A

Roughly 344m/sec at sea level and 60°

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is amplitude?

A

Energy in the soundwave.

The more energy creating the sound the greater the compression represented at the crest of the wave.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Whats related to what

A

Frequency is related to pitch

Amplitude is related to volume and dynamic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

How is amplitude measured

A

From the 0 point to the top of the crest.

Measured in Decibels

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What DB is the threshold of pain

A

130 DB

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is a waveform

A

The shape of the sound wave

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What are most musical tone made up of

A

A prominent fundamental and many inaudible overtones

17
Q

Which harmonic is the first

A

The fundamental

18
Q

Which harmonics are out of tune

A

7th 11th 14th

19
Q

What gives an instrument is timbre

A

Differences in intensity of harmonics

20
Q

Why are lower intervals muddy

A

The dissonant harmonics are more audible than at a higher pitch

21
Q

What is phase?

A

It measures how far in degrees a sound has traveled in its cycle

22
Q

What else could phase be

A

The relationship between the similar waves

23
Q

What is it called when two waves end their cycle together

A

Being in phase

24
Q

Whats its called when two waves dont end their cycles together

A

Out of phase by ___ degrees

25
Q

What is resonance

A

When the vibrations from one source are transferred to another object

26
Q

What gives an instument its harmonics

A

Materiak shape and skill of musician

27
Q

What is reflection

A

When a sound collides with an object and bounces off.

28
Q

What does a soundwave lose during reflection

A

It loses amplitude due to absorbtion

29
Q

What is reverberation

A

The sound you still hesr reflecting after the source has stopped transmitting

30
Q

What are standing waves

A

Wave patterns formed from both constructive and desconstructive interference.

VOL 1 (18 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions