Sound Measurement and Insulation Concepts

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Which term refers to the fluctuation or displacement of a wave from its mean value?

Period

Frequency

Amplitude (correct)

Velocity

What attribute of sound determines the pitch?

Amplitude

Frequency (correct)

Timbre

Reverberation

What phenomenon is described as the persistence of sound after it has been stopped due to multiple reflections?

Reverberation (correct)

Resonance

Absorption

Diffusion

What term indicates the way a sound moves or spreads through a medium?

Propagation Signup and view all the answers

Which factor affects the reduction of overall noise level by localizing noise to its region of origin?

Sound/Noise Reduction Signup and view all the answers

What characteristic helps in identifying the notes of an instrument or voice?

Timbre Signup and view all the answers

What is the wavelength of a sound wave?

Measure of distance between two identical peaks Signup and view all the answers

What term is used to describe the phenomenon in which a sound wave spreads spherically and decays at 6dB?

Far field Signup and view all the answers

Which term refers to the reduction of noise or vibration measured in decibels?

Attenuation Signup and view all the answers

Which of the following best describes reflection of a sound wave?

When a sound wave strike a surface some will bounce in different directions Signup and view all the answers

What does diffusion refer to in the context of sound waves?

Scattering of sound waves from a surface Signup and view all the answers

What is the term for the graphical representation of a sound?

Waveform of sound Signup and view all the answers

Which term describes the ratio between a given intensity and base intensity, measured in decibels?

Intensity level Signup and view all the answers

When does resonance occur with respect to sound waves?

Result of item vibrating after being exposed to sound waves at resonant frequency Signup and view all the answers

What is the total sound energy radiated by a sound source, calculated as the product of sound pressure and volume velocity?

Sound power Signup and view all the answers

Diffraction is best described as:

Bending and spreading out of light or sound waves around an object Signup and view all the answers

Which term refers to sound that is radiated directly from the source?

Airborne sound Signup and view all the answers

Diffusion is NOT characterized by: