Acoustics and Illumination

Unit of sound frequency

• Pascal

• Watts

• Decibel

• Hertz

Audio Frequency range of humans

• 20-20,000 Hz

• 50-75,000 Hz

• 5-50,000 Hz

• 30-30,000 Hz

Pitch is the subjective term for Frequency

• Maybe

• False

• True

• NOTA

Human speech is mainly in the range

• 400-4,000

• 300-3,000 Hz

• 200-2,000 Hz

• 100-1,000 Hz

Prolongation of the sound in the room caused by continued multiple reflections

• Flutter Echo

• Echo

• Reverberation

• Reflection

Bass sound is considered

• Low Frequency

• Medium Frequency

• High Frequency

• No Frequency

Treble sound is considered

• Low Frequency

• Medium Frequency

• High Frequency

• No Frequency

The sound energy transferred per second from the noise source to the air

• Sound Pressure Level

• Sound Level

• Sound Power

• Sound Pressure

Sound pressure converted to the decibel scale

• Sound Level

• Sound Pressure

• Sound Pressure Level

• Sound Power

The human impression of the strength of a sound

• Pressure

• Loudness

• Power

• Intensity