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Audio > Test 1 > Flashcards

Test 1 Flashcards

1
Q

What is sound?

Meaning of sound

A

Sound is a vibration through a medium (water air wood) That is intercepted by the human ear, which transmits an electrical signal to the brain, which interprets the data as auditory info

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2
Q

Waves consist of areas of high and low pressure called…

A

Compressions and rarefractions

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3
Q

Sound waves are a Type of wave known as…

A

Longitudinal waves

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4
Q

Amplitude is…

A

Height of wave

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5
Q

Amplitude determines….

A

How loud a sound will be

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6
Q

Amplitude is measured in….

A

Decibels (dB)

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7
Q

Cycles?

A

At what point does the wave repeat and over how much time

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8
Q

CPS

A

Cycles per second

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9
Q

Frequency (f) is…

A

Cycles/second

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10
Q

Frequency is measured in….

A

Hertz (Hz)

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11
Q

Wavelength is represented by….

A

Lambda (λ)

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12
Q

Formula for wavelength is….

A

λ = C/f

“C” is the speed of sound constant

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13
Q

High frequency…

A

Short wavelength

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14
Q

Low frequency…

A

Long wavelength

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15
Q

15 degrees Celsius, sound travels at…

A

340 metres per second

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16
Q

Sound travels fast in

A

High temps

17
Q

Sound travels slow in

A

Low temps

18
Q

Inverse square law

A

The further you are from a speaker, the quieter it becomes

19
Q

Phase is…

A

Temporal relationship between 2 waveforms, a relationship of time

20
Q

Phase is measured in…

A

Degrees

21
Q

Addition of waveforms is called…

A

Constructive interference

22
Q

The DNA looking wave form is called….

A

180Ø
Reverse polarity
Phase cancellation

23
Q

The DNA looking one is an example of….

A

Deconstructive interference

24
Q

Sound cannot travel through…

A

A vacuum

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