Reverb

Question 1

How did reverbs start?

Answer 1

chambers for film

Question 2

What was the main problem with early reverbs?

Answer 2

the gap between the initial sound and the early reflections was too large, so you needed a delay between them

Question 3

What is the main problem with reverb emulators?

Answer 3

they are not pitch accurate because of a chorus effect to cover up space between delays

Question 4

What is the most natural and accurate sense of reverb?

Answer 4

stereo pair in a room

Question 5

How does spring reverb work?

Answer 5

input transducer vibrates with the input signal, attached coiled spring vibrates, hitting output transducer and creating output signal

Question 6

How do plate reverbs work?

Answer 6

similar to spring reverb but with a plate

Question 7

What is direct sound?

Answer 7

dry signal we feed into the reverb emulator

Question 8

What is pre-delay?

Answer 8

time between direct sound and early reflections

Question 9

What does pre-delay tell us?

Answer 9

clues about size and distance of room

Question 10

What does a long pre-delay do?

Answer 10

keeps instruments at front of mix

Question 11

What do early reflections do?

Answer 11

provide brain with most of info regarding space, contribute to realism of depth

Question 12

What does the level of early reflections suggest?

Answer 12

size of room; late reflections=large room

Question 13

What do louder early reflections mean?

Answer 13

more distance between the source and the listener

Question 14

What is critical distance?

Answer 14

the point at which reverberant sound and direct sound are the same level

Question 15

What is RT60?

Answer 15

the time it takes reverb in a room to decay by 60dB

Question 16

What is diffusion?

Answer 16

scattering of sound

Question 17

What does a properly diffused sound field produce?

Answer 17

more uniform frequency response

Question 18

Where can frequency treatment happen for reverb?

Answer 18

pre-reverb, damping, and post-reverb

Question 19

What is pre-reverb frequency treatment used for?

Answer 19

removing unwanted frequencies that can impair reverb output

Question 20

What is damping?

Answer 20

frequency treatment within reverb algorithm

Question 21

What is post-reverb frequency treatment used for?

Answer 21

EQing reverb output to fit it into the mix

Question 22

What does HF damping do?

Answer 22

results in more natural simulation and prevents unwanted noise from lingering on reverb tail

Question 23

What does LF damping do?

Answer 23

simulates rooms with materials that absorb more LF than HF (like wood)

Question 24

What are the 3 main problems with mono reverb?

Answer 24

limited realism, direct sound masks reverberant sound, does not mimic directional behavior of natural reverb

Question 25

What are true stereo reverbs?

Answer 25

emulators that maintain stereo processing throughout

Question 26

What is the main advantage of true stereo reverb?

Answer 26

phase differences create spacious reverb (however, not mono compatible)

Question 27

What is the different between fixed-source and movable source reverb emulators?

Answer 27

fixed-source have fixed position for both source and listener, movable source gives control over position of source in digital room

Question 28

What is ambiance collision?

Answer 28

blend of too many spaces, making no spatial sense

Question 29

Should reverbs be sent pre- or post-fader?

Answer 29

post-fader so that the dry signal and reverb level are linked