Acoustics and Sound Control in Healthcare Design Flashcards

What is the primary unit used to measure sound pressure levels in healthcare acoustic design?

Answer: Decibel (dB)

Decibels (dB) measure sound pressure levels and are the standard unit referenced in acoustic performance criteria and healthcare design guidelines.

According to World Health Organization guidelines, what is the recommended nighttime noise level in hospital patient rooms?

Answer: 35 dB(A)

WHO guidelines recommend nighttime hospital patient room noise not exceed 35 dB(A) to protect patient sleep and support recovery.

Which wall design strategy is most effective at preventing sound flanking between adjacent patient rooms?

Answer: Building walls that extend to the structural deck above the ceiling

Walls extended to the structural deck close the flanking path above suspended ceilings, providing the highest level of sound isolation between adjacent spaces.

In the context of healthcare acoustic design, 'speech privacy' refers primarily to which of the following?

Answer: Prevention of patient conversations from being understood by unintended listeners

Speech privacy ensures that confidential patient conversations cannot be understood outside the intended space, supporting HIPAA compliance and patient dignity.

Which primary design and construction reference standard includes specific acoustic performance requirements for healthcare facilities?

Answer: FGI Guidelines for Design and Construction of Health Care Facilities

The Facility Guidelines Institute (FGI) Guidelines are the primary reference for healthcare facility design and include specific acoustic criteria for various room types.

What does the term 'reverberation time' (RT60) describe in healthcare acoustic design?

Answer: The time required for sound to decay by 60 dB after the source stops

RT60 is the time for sound pressure to decay by 60 decibels after the source ceases; longer reverberation impairs speech intelligibility and increases perceived noise levels.

Which psychological phenomenon is relevant to understanding why high background noise levels impair staff concentration in busy nursing units?

Answer: The Cocktail Party Effect

The cocktail party effect describes the brain's ability to selectively focus on one sound amid competing noise; high noise loads overwhelm this mechanism, degrading concentration and increasing error risk.