This quiz covers the “Digital Audio, Part 1” and “Digital Audio, Part 2” web pages.
Be able to answer the following questions.
How to Study for Quiz 4
- What does a transducer do?
- What do the abbreviations ADC and DAC stand for?
- What is the difference between a continuous and a discrete audio signal?
- What is the sampling rate?
- What aspect of sound quality does the sampling rate affect?
- What does the Nyquist Theorem state?
- Given a sampling rate of 44,100 Hz, what is the Nyquist frequency?
- What is aliasing?
- What happens to frequencies that are higher than the Nyquist frequency when you convert a signal from a digital to an analog representation?
- Name three common sampling rates.
- What is sampling resolution? What aspect of an audio signal does it affect?
- Which set of specifications gives the better sampling resolution: 48 kHz / 8-bit or 44.1 kHz / 16-bit?
- When converting from analog to digital, what process does the term quantization refer to?
- What is quantization error?
- How does the addition of a single bit of resolution affect the number of integers available for quantization?
- In a digital system, how does clipping happen?
- What are some commonly used bit depths?
- How much storage is required by two minutes of a stereo, CD-quality sound file? Explain your reasoning.
- Why is the MP3 format referred to as lossy compression?