Audio Basics

What is the unit of measurement for the loudness of sound?

• Watts

• Decibels

• Joules

• Hertz

What is the unit of measurement for the frequency of sound?

• Hertz

• Pascal

• Celsius

• Amperes

At what dB level is sound considered the "threshold of pain"?

• 85 dB

• 120 dB

• 135 dB

• 150 dB

What is likely to happen when sound reaches the "threshold of pain"?

• You can start to hear the sound

• The sound becomes comfortable to listen to

• Your ears may ring and hearing damage can occur

• The sound becomes completely silent

At what level does a sound begin to damage your hearing?

• 20 dB

• 30 dB

• 45 dB

• 90 dB

What is used to measure loudness in audio production?

• Ohmmeter

• VU meters

• Ammeter

• Voltmeter

What is considered the maximum desirable sound level in live production? If you go beyond that, the sound will be distorted

• -12 dB

• -6 dB

• 0 dB

• 6 dB

In post-production, what should the audio levels be between?

• 0 and +6 dB

• -12 and -6 dB

• -20 and -10 dB

• -30 and -20 dB

What does frequency refer to in terms of sound?

• The loudness of the sound

• The duration of the sound

• The basic pitch of sound (how high/low it is)

• The speed of the sound wave

Which frequency corresponds to an extremely low pitch, similar to a rumble?

• 20Hz

• 200Hz

• 2,000Hz

• 20,000Hz