Quiz #2

Question 1

Timber and pitch are attributes that are

Answer 1

perceptual

Question 2

Amplitude and frequency are

Answer 2

not perceptual

Question 3

The Equal Loudness Principal

Answer 3

Illustrates that we hear pitches differently based on our ears, and how we perceive them. We are sensitive to pitch in the middle range, less at the low and high ends of the spectrum. The limits of our perception of pitch is limited then, to the range between 30 Hz to 5 kHz

Question 4

The phenomenon of the missing fundamental

Answer 4

Illustrates that we perceive pitch based on a fundamental of the harmonic spectrum even if it is missing

Question 5

Psychoacoustics

Answer 5

Stream segregation describes how our auditory systems separate sound that come from different sources

Question 6

Ohm’s Law

Answer 6

Stating that the electric current is proportional to voltage and inversely to resistance I=V/R or V=IR

Question 7

Faraday’s Law

Answer 7

Describes how an electric current produces a magnetic field and conversely, how changing a magnetic field generates an electric current in a conductor

Question 8

The characteristic of a microphone most responsible for it’s “tone” or “timbre” is

Answer 8

It’s frequency response (spectra)

Question 9

Condenser or capacitance microphones require what to operate?

Answer 9

Phantom power

Question 10

The proximity effect demonstrates?

Answer 10

An increase in bass response in close proximity to a microphone

Question 11

A microphone’s housing determines what?

Answer 11

It’s directivity/ polar pattern

Question 12

The power rating of a loudspeaker is?

Answer 12

How much power it can produce over time without damage

Question 13

A ‘driver’ is a device (and part of a speaker) that?

Answer 13

Produces sound. ex. woofers and tweeters

Question 14

A loudspeaker works like?

Answer 14

A microphone, specifically like a dynamic or ribbon mics

Question 15

The audible effect of ,mounting a speaker to a baffle is?

Answer 15

That low frequencies will propagate and not cancel

Question 16

The inverse square law

Answer 16

States that sound intensity of a point source drops in intensity as we move away and that it decays with the square of the distance from the source

Question 17

Driver size affects?

Answer 17

Directivity: Large drivers are more omnidirectional at lower frequencies and more directional at high freqquencies

Question 18

A good PA will be?

Answer 18

Directional to the audience and also not direct sound to where it is not wanted

Question 19

Properties of a standard stereo speaker set-up are that

Answer 19

It has two speakers and that it forms a triangle with equal sides at 60 degrees

Question 20

Sensitivity

Answer 20

Expresses the sound pressure level a loudspeaker provides in relation to a standard reference

Question 21

Directionality

Answer 21

Describes how sound radiates from the speaker

Question 22

Dynamic range

Answer 22

Expresses the difference between maximum SPL and minimum SPL a speaker can reproduce

Question 23

Frequency response

Answer 23

Describes which areas of the spectrum a loudspeaker emphasizes