CEA Studio Acoustics and Room Treatment 1

Question 1

What is the primary purpose of bass traps in a recording studio?

Accepted Answer

To absorb low-frequency standing waves and reduce room resonances

Answer

To prevent high-frequency flutter echo

Answer

To diffuse mid-frequency reflections from sidewalls

Answer

To isolate the studio from external noise

Question 2

What acoustic phenomenon occurs when sound waves of a specific frequency create stationary patterns of constructive and destructive interference between parallel walls?

Accepted Answer

Standing waves (room modes)

Answer

Flutter echo

Answer

Comb filtering

Answer

Reverberation tail

Question 3

Which type of acoustic panel is designed to scatter sound energy in multiple directions rather than absorbing it?

Accepted Answer

Diffuser (e.g., QRD diffuser)

Answer

Fiberglass absorption panel

Answer

Acoustic foam wedge

Answer

Mass-loaded vinyl barrier

Question 4

What does 'RT60' measure in a room's acoustic response?

Accepted Answer

The time it takes for sound to decay by 60 dB after the source stops

Answer

The frequency at which the room resonates most strongly

Answer

The ratio of direct sound to reflected sound at 60 Hz

Answer

The maximum SPL the room can sustain at 60% humidity

Question 5

What is 'flutter echo' in studio acoustics?

Accepted Answer

A rapid series of discrete echoes caused by reflections between two parallel, reflective surfaces

Answer

A low-frequency resonance caused by room dimensions

Answer

The buildup of low-frequency energy in room corners

Answer

A high-frequency hiss caused by surface irregularities

Question 6

In room treatment, what is the role of 'mass-loaded vinyl' (MLV)?

Accepted Answer

To add mass to walls and reduce sound transmission between spaces (soundproofing)

Answer

To absorb mid and high frequencies on walls

Answer

To diffuse low-frequency energy in corners

Answer

To decouple floating floors from building structure