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Questions and Answers
What does the sound absorption coefficient α represent?
What does the sound absorption coefficient α represent?
- Sound absorption properties affecting sound absorbers
- Total room absorption in Sabins
- Fraction of incident sound energy that a material absorbs (correct)
- Intensity absorbed by the material
Which value of α indicates perfect absorption with all incident sound energy absorbed?
Which value of α indicates perfect absorption with all incident sound energy absorbed?
- α = 10
- α = 0
- α = 1 (correct)
- α = 0.20
In the context of sound absorption, what does the term 'Sabins' refer to?
In the context of sound absorption, what does the term 'Sabins' refer to?
- Density of sound-absorbing materials
- Measurement unit of total room absorption (correct)
- Intensity level of sound waves
- Surface area in ft^2
What type of materials are referred to as sound-reflecting based on their absorption coefficient?
What type of materials are referred to as sound-reflecting based on their absorption coefficient?
Which property affects sound absorbers related to 'thickness'?
Which property affects sound absorbers related to 'thickness'?
What does the formula NR = 10 Log a2/a1 represent in the context of sound absorption?
What does the formula NR = 10 Log a2/a1 represent in the context of sound absorption?
In a room with no acoustical treatment, where does a person hear reflected sound from?
In a room with no acoustical treatment, where does a person hear reflected sound from?
What is the main difference in what a person hears in a room with acoustical treatment compared to a room with no treatment?
What is the main difference in what a person hears in a room with acoustical treatment compared to a room with no treatment?
What is the Free-Field condition in acoustics?
What is the Free-Field condition in acoustics?
What defines the effectiveness of a sound-absorbing material in acoustics?
What defines the effectiveness of a sound-absorbing material in acoustics?
Why does more absorption in a room lead to less build-up of sound energy in the reverberant field?
Why does more absorption in a room lead to less build-up of sound energy in the reverberant field?
