jessvi created page: Lab3 authored by Jesper Kurtzmann Svith's avatar Jesper Kurtzmann Svith
...@@ -202,6 +202,7 @@ ...@@ -202,6 +202,7 @@
> sound (see video). > sound (see video).
> >
> [![image alt text](http://img.youtube.com/vi/UMSrPEmQrwE/0.jpg)](http://www.youtube.com/watch?v=UMSrPEmQrwE) > [![image alt text](http://img.youtube.com/vi/UMSrPEmQrwE/0.jpg)](http://www.youtube.com/watch?v=UMSrPEmQrwE)
> ##### Fig. 7: Video of the clap detecting robot in action.
> >
>``` >```
> while (!Button.ESCAPE.isDown()) { > while (!Button.ESCAPE.isDown()) {
...@@ -229,10 +230,10 @@ ...@@ -229,10 +230,10 @@
> Thread.sleep(5); > Thread.sleep(5);
> } > }
>``` >```
> Fig. ??: Inner loop of the ClapCar program. > ##### Fig. 8: Inner loop of the ClapCar program.
> >
> ![G3](http://gitlab.au.dk/uploads/group-22/lego/8b5ba5b544/G3.png) > ![G3](http://gitlab.au.dk/uploads/group-22/lego/8b5ba5b544/G3.png)
> Fig. ??: Graph showing the profile of a single clap of sound level over time. > ##### Fig. 9: Graph showing the profile of a single clap of sound level over time.
> >
> We noticed that it is possible to trick the robot into thinking it hears a clap by shouting a short word to the sound sensor. This is due to the fact that the robot only distinguishes between volume and duration of a sound meaning that different sounds can actually result in the same sound profile. The graph below [fig. ??] shows a series of claps showing three distinct peaks. Each peak is a registered clap. The smaller peaks will not result in a beep as the sound profile does not match that of a clap. > We noticed that it is possible to trick the robot into thinking it hears a clap by shouting a short word to the sound sensor. This is due to the fact that the robot only distinguishes between volume and duration of a sound meaning that different sounds can actually result in the same sound profile. The graph below [fig. ??] shows a series of claps showing three distinct peaks. Each peak is a registered clap. The smaller peaks will not result in a beep as the sound profile does not match that of a clap.
> >
...@@ -247,7 +248,7 @@ ...@@ -247,7 +248,7 @@
> drive towards the location with the loudest sound level. > drive towards the location with the loudest sound level.
> >
> ![P2](http://gitlab.au.dk/uploads/group-22/lego/ed19ec2872/P2.png) > ![P2](http://gitlab.au.dk/uploads/group-22/lego/ed19ec2872/P2.png)
> Fig. ??: Picture showing how we mounted the two sound sensors on the NXT robot. > ##### Fig. 10: Picture showing how we mounted the two sound sensors on the NXT robot.
> >
> The two sound sensors were mounted on the opposite sides of the robot facing away from each other at a 90 degree > The two sound sensors were mounted on the opposite sides of the robot facing away from each other at a 90 degree
> angle (perpendicular to each other), as can be seen in fig. ??. > angle (perpendicular to each other), as can be seen in fig. ??.
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