Sound Design Waves And Sound 2

Question 1

What happens to the wavelength of a sound wave when its frequency doubles while traveling through the same medium?

Accepted Answer

It halves

Answer

Wavelength and frequency are inversely proportional (λ = v/f), so doubling frequency halves the wavelength.

Question 2

Which type of wave interference produces a standing wave pattern in a closed pipe?

Accepted Answer

A combination of incident and reflected waves

Answer

Standing waves in closed pipes form when the incident wave combines with its reflection, creating fixed nodes and antinodes.

Question 3

The speed of sound in air increases when which condition changes?

Accepted Answer

Temperature increases

Answer

Higher air temperature increases molecular kinetic energy, allowing sound to travel faster through the medium.

Question 4

A sound designer notices that a room has a resonant 'boom' at 80 Hz. What is the most likely cause?

Accepted Answer

A room mode caused by room dimensions

Answer

Room modes occur when room dimensions create standing waves at specific frequencies, causing resonant buildup.

Question 5

What does the term 'phase cancellation' describe in audio?

Accepted Answer

Reduction in amplitude when two out-of-phase signals combine

Answer

Phase cancellation occurs when two signals are out of phase (especially 180°), causing their amplitudes to subtract and reduce or eliminate the sound.

Sound Design Practice Test

Sound Design Practice Test

Sound Design Waves And Sound 2