RO93 - Audio Files

What does an analog to digital converter do?

• Plays audio files on computers

• Increases the amplitude of sound waves

• Changes analog sound into numerical data

• Converts digital sound into analog sound

What is the process of measuring amplitude at regular intervals called?

• Quantization

• Wave height recording

• Bit depth measurement

• Sampling

What does a higher sample rate indicate?

• Smaller file size

• Fewer samples per second

• Lower audio quality

• Closer representation to the original sound

What is a typical sample rate for music recordings?

• 22,050 Hertz

• 44,100 Hertz

• 88,200 Hertz

• 96,000 Hertz

How does bit depth affect audio recording?

• Controls the playback speed

• Determines the file format

• Affects the range of numbers and precision

• Reduces the sampling rate

Which format is known for being a lossy compressed format popular for streaming?

• FLAC

• WAV

• MP3

• AAC

What is the advantage of using FLAC format?

• Retains audio quality while reducing file size

• Smallest file size

• Highest compression for streaming

• Most compatible with devices

What does quantization involve in digital audio processing?

• Converting audio files into MP3 format

• Rounding values to whole numbers

• Increasing the bit depth

• Sampling at higher frequencies

Why might someone choose a higher bit depth for audio recording?

• To use less data per sample

• To reduce the file size

• For a more accurate recording

• To decrease the sample rate

What is the impact of a higher sample rate on file size?

• Decreases the file size

• Has no effect on file size

• Increases the file size

• Changes the file format