Flashcards: Fundamentals of Acoustics and Noise Control — 10 cards

Hearing Loss — types?

Conductive, presbycusis, sensorineural

Sound Pressure Level — definition?

Microscale measurement of sound pressure relative to reference.

Vibration — max displacement?

1.20 mm

Reverberation Time (T₆₀) — meaning?

Time SPL decays by 60 dB in a room.

Wave pressure — formula?

P = A sin(ωt - kx)

Frequency Weightings — purpose?

A-weighting mimics human hearing sensitivity.

Sound Power (Lw) — concept?

Total acoustic energy emitted by a source.

Noise Barriers — primary function?

Reduce sound via reflection, absorption, diffraction.

Vibration Acceleration — formula?

a_peak = ω² x_max; RMS = a_peak/√2.

Hearing Loss Types — examples?

Conductive, sensorineural, presbycusis.