R093 Quiz: L21 (4.2) - Audio files

What is the definition of sample rate?

• The number of bits used to represent each audio sample
• The number of samples of audio carried per second, measured in Hertz (Hz)
• The type of compression used for audio files
• The amount of storage needed for an audio file

What is the standard sample rate for CD audio?

• 48 kHz
• 96 kHz
• 44.1 kHz
• 192 kHz

Which of the following sample rates is commonly used in video production?

• 44.1 kHz
• 96 kHz
• 48 kHz
• 192 kHz

Higher sample rates provide:

• Less detail in sound
• More detail in sound
• The same detail regardless of sample rate
• Better file compression

What does bit depth represent?

• The number of audio samples taken per second
• The number of bits used to represent each audio sample
• The amount of compression applied to a file
• The size of an audio file in megabytes

How many different levels of amplitude can 16-bit audio represent?

• 256
• 1,024
• 65,536

Which bit depth provides a more detailed and nuanced sound?

• 8-bit
• 16-bit
• 24-bit
• 32-bit

What is the primary purpose of audio compression?

• To increase the sample rate
• To reduce file size
• To improve audio quality
• To change the bit depth

What is lossy compression?

• A method of compressing audio without losing quality
• A method of compressing audio that removes some data and reduces quality
• A method of increasing file size
• A method used only in professional audio applications

Which of the following is a lossless compression format?

• MP3
• FLAC
• AAC
• WAV