Sound Basics Abridged

Sound frequency is measured in ​​ (a)   and amplitude is measured in ​ (b)   .​ ​

• Hertz (Hz)
• Decibels (dB)
• Kelvins (K)
• Loudness (LUFS)

What is audio clipping?

• A method to increase audio clarity.

• A process to reduce audio file size.

• Distortion due to over-amplification.

• The act of cutting audio tracks.

What creates sound?

• Silence in a room

• Light reflecting off surfaces.

• Vibrations in the air

• The absence of air

Which device can visually display a soundwave?

• Oscilloscope

• Microscope

• Telescope

• Thermometer

How is sound frequency measured?

• Decibels (dB)

• Hertz (Hz)

• Watts (W)

• Lumens (lm)

Which of the following is an example of a high-frequency sound?

• Thunder

• Big crashing waves

• Elephant Trumpet

• Glass breaking

What does amplitude = _____________?

• Color intensity

• Vibration speed

• Loudness or volume

• Light brightness

What is the loudness level for broadcast television, measured in LUFS?

• -24 LUFS

• -15 LUFS

• 0 LUFS

• 100 LUFS

What frequency is used to align an audio signal's input to its output during calibration?

• 500 Hz

• 1000 Hz (1kHz)

• 1500 Hz

• 2000 Hz

What is audio clipping?

• A method to increase audio clarity.

• A process to reduce audio file size.

• Distortion due to over-amplification.

• The act of cutting audio tracks.