Music & Audio Advice FREE Music & Audio Advice Acoustic Treatment Principles Questions and Answers 2

Question 1

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

Accepted Answer

To absorb low-frequency sound energy that accumulates in corners

Answer

To block outside noise from entering the room

Answer

To amplify bass frequencies for monitoring

Answer

To redirect high-frequency reflections

Question 2

Which material property is most important for effective mid-to-high frequency absorption?

Accepted Answer

Density and porosity of the material

Answer

Color and surface finish

Answer

Total weight of the panel

Answer

Magnetic permeability

Question 3

What does the term 'flutter echo' describe in an untreated room?

Accepted Answer

A rapid series of reflections between two parallel surfaces

Answer

A single strong reflection from a curved wall

Answer

Low-frequency rumble caused by HVAC systems

Answer

The natural reverberation tail of a large hall

Question 4

At what fraction of a wavelength from a wall boundary should a porous absorber ideally be placed for maximum absorption at a target frequency?

Accepted Answer

One-quarter wavelength

Answer

One-half wavelength

Answer

One full wavelength

Answer

One-eighth wavelength

Question 5

What is the Noise Reduction Coefficient (NRC) of a material?

Accepted Answer

The average of its absorption coefficients at 250, 500, 1000, and 2000 Hz

Answer

The maximum sound pressure level the material can block

Answer

The ratio of transmitted to reflected sound energy

Answer

The decibel reduction measured through the material

Question 6

Why is it generally recommended to treat the first reflection points on side walls in a mixing room?

Accepted Answer

To reduce comb filtering that degrades stereo imaging accuracy

Answer

To completely eliminate all room reverberation

Answer

To increase the overall loudness of the monitors

Answer

To prevent sound from reaching the back wall