Technical Numeracy Flashcards

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1
Q

What does the graph of a waveform show?

A

How the displacement changes over time

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2
Q

What is a logarithmic scale used to represent?

A

Orders of magnitude as a linear change

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3
Q

The decibel scale and the frequency values on filter or EQ are examples of what kind of scale?

A

Logarithmic

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4
Q

Why does the decibel use a logarithmic scale?

A

Because our ears don’t respond to sound pressure in a linear way

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5
Q

What will we hear louder: sounds with a consistently high level, or sounds with a loud peak but no sustained volume?

A

Sounds with a consistently high level

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6
Q

What is frequency?

A

The number of waveform cycles per second

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7
Q

What is the period of an oscillation?

A

The amount of time a single cycle takes

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8
Q

How do you calculate the frequency F from the Period T?

A

F = 1/T

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9
Q

How do you calculate the period T from the frequency F?

A

T = 1/F

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10
Q

How do you calculate the frequency of an octave higher than a given frequency?

A

The octave higher is always double the frequency of the original

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11
Q

How do you calculate the frequency of an octave lower than a given frequency?

A

The octave lower is always half the frequency of the original

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12
Q

How do you calculate the frequency of a perfect 5th higher than a given frequency?

A

It is the mid-point between the original and an octave higher

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13
Q

How do you calculate the frequency of a perfect 4th lower than a given frequency?

A

It is half the frequency of the perfect 5th above

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14
Q

What is the formula for harmonic frequency?

A

Fundamental frequency x number of harmonic

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15
Q

How would you calculate delay time of a given BPM?

A

60/BPM

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