marvin:lab3
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marvin:lab3 [2008/09/19 12:26] – deva | marvin:lab3 [2008/10/09 21:21] – rieper | ||
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- | === Lab rapport 3=== | + | ===== Lab rapport 3===== |
**Date:** September 19th 2008\\ | **Date:** September 19th 2008\\ | ||
**Duration of activity:** 8-12\\ | **Duration of activity:** 8-12\\ | ||
**Participants: | **Participants: | ||
- | In this lesson we will use the NXT sound sensor to turn the LEGO 9797 car into a sound controlled | + | **Purpose** |
car. | car. | ||
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The sound was that of Bent speaking directly into the microphone, thus utilizing the entire span of the power spectrum.\\ | The sound was that of Bent speaking directly into the microphone, thus utilizing the entire span of the power spectrum.\\ | ||
The recorded samples can be seen below (MatLab plot):\\ | The recorded samples can be seen below (MatLab plot):\\ | ||
- | {{: | + | {{: |
+ | Notice that the time resolution is poor due to the low sampling time. When playing back in Wave format it is impossible to recognize any spoken words. | ||
====Sound Control==== | ====Sound Control==== | ||
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The code was modified to break out of the innermost loops upon '' | The code was modified to break out of the innermost loops upon '' | ||
- | We tested the program | + | We tested the program |
We measured the motors running at about 40-60 in noise level, and changed the threshold to 80 accordingly. | We measured the motors running at about 40-60 in noise level, and changed the threshold to 80 accordingly. | ||
marvin/lab3.txt · Last modified: 2008/10/09 21:33 by rieper