Monday, November 8, 2010

Frequency and Amplitude

1. Sound 1: 25
Sound 2: 26
Sound 3: 27
Sound 4: 28
2. The pitch stayed the same, but the loudness of the sounds increased.
3. x = tone
    y = decibel percentage

4.
i. Yes. The readings went up as the amplitude went up.
ii. As the amplitude increases, the sensor readings increase. As the amplitude decreases, the sensor readings decrease.
5. If the amplitude is high, the sensor will read a louder sound and a higher volume. If the amplitude is low, then the sensor will read a lower volume.
6. Sound 1: 24
Sound 2: 69
Sound 3: 88
Sound 4: 96
7. The pitch changed between each tone because the frequencies increased. The amplitude between each tone changed.
8. x = tone
    y = decibel percentage
9.
i. Yes. 
ii. As the frequencies increased, the sensor readings went up. However, there is not a strong pattern.
10. Frequency and amplitude affect the sensor readings. As they increase, the sensor will read higher values. As they decrease, the sensor will read lower values.
11. Frequency and amplitude affect the sensor, but amplitude will be more accurate.
12. 
i. They would need the sound detector since they are trying to limit the amount of noise in the cafeteria.
ii. The sound sensor would be useless since the sensor cannot determine if the pitch is in tune or not. The sensor cannot determine frequency as well as it can amplitude.
iii. The sensor would not work, since the frequencies of people's voices are similar.
iv. It could work except that the sirens for the different emergency vehicles are different frequencies and different amplitudes when they are farther away as compared to when they are closer.
v. The sensor would work well for the teapot because the teapot makes the same noise and pitch every time.
vi. It could work because the crying would be the only noise for the sensor to hear.
13. Test the sound sensor when both amplitude and frequency are variables. We could also play a constant sound and move the sensor closer and farther away to see if it gets quieter and softer. 
14. The term to describe amplitude is volume. The term to describe frequency is tone or pitch.

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