ACOUSTICS Prelim-Midterm Exam 2B

Describes the number of waves that pass a fixed place in a given amount of time.

• Reverberation

• Intensity

• Frequency

• Echo

Oscillations where particles are displaced perpendicular to the wave direction

• Wave Propagation

• Sound Wave

• Longitudinal Wave

• Transverse Wave

Oscillations where particles are displaced parallel to the wave direction.

• Reflected Waves

• Sound Waves

• Longitudinal Waves

• Transverse Waves

Refers to how fast the disturbance is passed from particle to particle.

• Pressure Disturbance

• Speed of Sound

• Wave Speed

• Inertia Property

Sound pressure level is measured in units of decibels (dB).

• True

• False

The amount of energy that is transported past a given area of the medium per unit of time is known as the ____________ of the sound wave.

• Speed

• Frequency

• Pressure

• Intensity

one of the most commonly used parameters in linear acoustics.

• Frequency

• Intensity

• Sound Pressure

• Absorption

The effectiveness of a sound absorbing materials can be expressed by its ____________________ .

• Sound Diffusion

• Sound Absorption Coeffiecient

• Acoustic Sound Absorption

• Sound Resonance

WHEN THE SOUND HIT THE SURFACE IN DIFFERENT DIRECTION.

• Reflection Incidence

• Random Incidence

• Normal Incidence

• Diffusion Incidence

A scalar representation of the amount of sound energy absorbed upon striking a particular surface.

• Acoustical Treatment

• Sound Absorpton

• Sound Reduction

• Noise Reduction Coefficient