Quiz on Sound and Animation

What is the unit for measuring sound pressure levels?

• Hertz

• Amplitude

• Decibels (dB)

• Kilobytes

Which of the following best defines digital audio?

• A sequence of MIDI instructions

• Sound stored as samples

• An analog wave

• Sound captured using film

Which sampling rate is considered CD-quality?

• 22.05 kHz

• 11.025 kHz

• 48 kHz

• 44.1 kHz

What determines the quality of a digital recording?

• MIDI version

• Bit depth only

• Sampling rate

• File extension

What is MIDI?

• A type of digital audio

• A digitized waveform

• A shorthand representation of music in numeric form

• A format for video

Which of the following is true about MIDI?

• It stores audio in bitmapped format

• It requires no musical knowledge

• It is device dependent

• It captures human voice better than digital audio

Which format is used by Apple's iTunes Store?

• WAV

• MP4

• ACC

• AIFF

Which file format is most commonly used in Windows for digitized sound?

• AIFF

• WAV

• MP3

• OGG

Which of the following operations is NOT a basic sound editing operation?

• Trimming

• Equalization

• Splicing

• Volume adjustment

Which of the following compression methods reduces space but may affect reliability?

• Quantization

• Equalization

• MP3

• Downsampling