1. Explain the difference between periodic and aperiodic waveforms. What are the visual differences? What are the characteristic sonic qualities of each? (2 points) Answer: A periodic waveform has repeatable patterns. Also, periodic waveforms have a tone. Most musical instruments have repeating periodic waveform. The periodic waveforms can also be found in bird sound and human vocal voice. However, an aperiodic waveform dose not have a repeating waveform and tone, like noise, the engine idling.
2. Specify the first 5 harmonics of a period sound with a fundamental at 200 Hz. (1 point)
Answer: the first harmonic is 200 Hz. The second harmonic is 400 Hz. The third harmonic is 600 Hz, the fourth harmonic is 800 Hz, and the fifth harmonic is …show more content…
17. What is the frequency range of human hearing (in Hz)? (1 point)
Answer: The human range is commonly given as 20-20,000Hz. Although there are some differences between individuals.
18. Explain the difference between Gain Change and Normalization, providing an example of when you might want to use each of them. (2 points)
Answer: Change Gain and Normalization is the same function. However, they could have different perspectives. Change gain is mainly about the amount of change desired, like increase 10 dB or specific number. In normalization, the user won't care too much about the actual amount of change. For example: Users probably will ask for reaching the sound to maximum amplitude.
19. Aside from lowering the pitch of a sound, what are two other affects of pitch shifting? (2 points)
Answer: 1. Pitch changes. 2. The duration of the sound changes. 3. The perceived size of the object that made the sound is modified.
20. What is meant by EQ notching and why do you do it? (2 points)
Answer: EQ notching is a technique used during mixing to obtain greater clarity amongst sounds. The basic idea is to carve out a spectral niche in one sound so that another sound can cut through in that spectral
2. Specify the first 5 harmonics of a period sound with a fundamental at 200 Hz. (1 point)
Answer: the first harmonic is 200 Hz. The second harmonic is 400 Hz. The third harmonic is 600 Hz, the fourth harmonic is 800 Hz, and the fifth harmonic is …show more content…
17. What is the frequency range of human hearing (in Hz)? (1 point)
Answer: The human range is commonly given as 20-20,000Hz. Although there are some differences between individuals.
18. Explain the difference between Gain Change and Normalization, providing an example of when you might want to use each of them. (2 points)
Answer: Change Gain and Normalization is the same function. However, they could have different perspectives. Change gain is mainly about the amount of change desired, like increase 10 dB or specific number. In normalization, the user won't care too much about the actual amount of change. For example: Users probably will ask for reaching the sound to maximum amplitude.
19. Aside from lowering the pitch of a sound, what are two other affects of pitch shifting? (2 points)
Answer: 1. Pitch changes. 2. The duration of the sound changes. 3. The perceived size of the object that made the sound is modified.
20. What is meant by EQ notching and why do you do it? (2 points)
Answer: EQ notching is a technique used during mixing to obtain greater clarity amongst sounds. The basic idea is to carve out a spectral niche in one sound so that another sound can cut through in that spectral