The floor is hardwood,= .15 at 500 Hz. The walls are gyps

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The floor is hardwood, = .15 at 500 Hz.

The walls are gypsum wallboard (GWB), = .30 at 500 Hz.

The ceiling is acoustic ceiling tile (ACT), = .95 at 500 Hz

Using the same room, calculate the following. Scan or photograph your assignment work and submit it.

What is the room constant for this room?

For a person speaking, what is the critical distance in this room? Use Q = 2.

If a person speaking produces a sound power level of 70 dB, how much sound pressure level would you expect at a distance of 3 m?

Is this in the direct field or the reverberant field?

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