Digital Sound & Audacity Quiz

What does the amplitude of a sound wave determine?

• Pitch

• Duration

• Loudness

• Frequency

What does the frequency of a sound wave affect?

• Loudness

• Pitch

• Sampling rate

• Amplitude

What is required for sound to travel?

• A vacuum

• A medium

• A laser

• Electricity

What is used to convert analog sound to digital format?

• ADC (Analog to Digital Converter)

• DAC

• CPU

• USB

In digital audio, what is 'sampling rate'?

• Size of sound file

• Number of samples taken per second

• Volume of the sound

• Bitrate of video

What unit is typically used for sampling rate?

• Megabytes

• Hertz (Hz)

• Decibels

• Seconds

Increasing the sampling rate results in:

• Lower sound quality

• Smaller file size

• Better sound representation

• More distortion

What does 'sampling resolution' refer to?

• Number of bits used to store each sample

• Sampling speed

• Sound delay

• Number of channels

What is one drawback of high sampling resolution?

• Poor sound quality

• Large file size

• Low bit depth

• Noisy output

In Audacity, the 'Invert' function:

• Speeds up the audio

• Flips the waveform vertically

• Makes the sound louder

• Removes silence