Procedure
These are the following steps we used while experimenting and determining the results. We had designed a project where we had to subjects to take part in 3 experiments where different methods used by the visually impaired to locate an object. Our hypothesis was that most effective technique to detecting a visually impaired person’s surroundings is by using echolocation, and our following procedure and observations verified.
Experiment 1- Cane Method
1. Subject A (the blind person) stands at starting point
2.Subject A turns around with her eyes closed at the starting point faced away from Subject B so she does not see where Subject B (the observing person) is placing the object
3. Subject B places the object a random distance away from Subject A
4. Subject A turns around when subject B has given the signal for her to proceed
5. Subject A uses a meter stick to navigate her way to where the object has been placed by tapping and shifting the stick from side to side to reduce bumping into her surroundings and locating the given object.
6. Subject A finds the object
7. Still keeping her eyes closed, subject determines the distance from the starting point to the object by estimating
8. Subject B records Subject A’s estimate
9. Subject B measures from the starting point to the object using the meter stick
10. Subject B records the actual distance of the object from the starting point
11. Subject B follows the same procedure for the cane method as Subject A
Experiment 2- Self Clicks Method
1. Subject A (the blind person) stands at starting point
2.Subject A turns around at the starting point with her eyes closed faced away from where Subject B so she does not see where Subject B (the observing person) is placing the object
3. Subject B places the object a random distance away from Subject A
4. Subject A turns around when subject B has given the signal for her to proceed
5. Subject A starts making clicks with their tongue
6. Subject A starts echolocation by listening for sound waves/echoes that bounce off the object
7. Subject A estimates the distance from the starting point to the object by listening to the volume of the returning echo
8. Subject B records Subject A’s estimate
9. Subject B measures from the starting point to the object using the meter stick
10. Subject B records the actual distance of the object from the starting point
11. Subject B follows the same procedure for the self clicks method as Subject A
Experiment 3- Magnified Voice Clicks
1. Subject A (the blind person) records voice clicks on a cellular device
2.Subject A turns around at the starting point with her eyes closed faced away from where Subject B is standing so she does not see where Subject B (the observing person) is placing the object
3. Subject B places the object a random distance away from Subject A
4. Subject A turns around when subject B has given the signal for her to proceed
5. Subject B gives Subject A the cellular device
6. Subject B plays the recording of Subject A’s click at full volume
7. Subject A starts echolocation by listening for sound waves/echoes that bounce off the object
8. Subject A estimates the distance from the starting point to the object by listening to the volume of the returning echo
9. Subject B records Subject A’s estimate
10. Subject B measures from the starting point to the object using the meter stick
11. Subject B records the actual distance of the object from the starting point
12. Subject B follows the same procedure for the magnified voice clicks as Subject A
These are the following steps we used while experimenting and determining the results. We had designed a project where we had to subjects to take part in 3 experiments where different methods used by the visually impaired to locate an object. Our hypothesis was that most effective technique to detecting a visually impaired person’s surroundings is by using echolocation, and our following procedure and observations verified.
Experiment 1- Cane Method
1. Subject A (the blind person) stands at starting point
2.Subject A turns around with her eyes closed at the starting point faced away from Subject B so she does not see where Subject B (the observing person) is placing the object
3. Subject B places the object a random distance away from Subject A
4. Subject A turns around when subject B has given the signal for her to proceed
5. Subject A uses a meter stick to navigate her way to where the object has been placed by tapping and shifting the stick from side to side to reduce bumping into her surroundings and locating the given object.
6. Subject A finds the object
7. Still keeping her eyes closed, subject determines the distance from the starting point to the object by estimating
8. Subject B records Subject A’s estimate
9. Subject B measures from the starting point to the object using the meter stick
10. Subject B records the actual distance of the object from the starting point
11. Subject B follows the same procedure for the cane method as Subject A
Experiment 2- Self Clicks Method
1. Subject A (the blind person) stands at starting point
2.Subject A turns around at the starting point with her eyes closed faced away from where Subject B so she does not see where Subject B (the observing person) is placing the object
3. Subject B places the object a random distance away from Subject A
4. Subject A turns around when subject B has given the signal for her to proceed
5. Subject A starts making clicks with their tongue
6. Subject A starts echolocation by listening for sound waves/echoes that bounce off the object
7. Subject A estimates the distance from the starting point to the object by listening to the volume of the returning echo
8. Subject B records Subject A’s estimate
9. Subject B measures from the starting point to the object using the meter stick
10. Subject B records the actual distance of the object from the starting point
11. Subject B follows the same procedure for the self clicks method as Subject A
Experiment 3- Magnified Voice Clicks
1. Subject A (the blind person) records voice clicks on a cellular device
2.Subject A turns around at the starting point with her eyes closed faced away from where Subject B is standing so she does not see where Subject B (the observing person) is placing the object
3. Subject B places the object a random distance away from Subject A
4. Subject A turns around when subject B has given the signal for her to proceed
5. Subject B gives Subject A the cellular device
6. Subject B plays the recording of Subject A’s click at full volume
7. Subject A starts echolocation by listening for sound waves/echoes that bounce off the object
8. Subject A estimates the distance from the starting point to the object by listening to the volume of the returning echo
9. Subject B records Subject A’s estimate
10. Subject B measures from the starting point to the object using the meter stick
11. Subject B records the actual distance of the object from the starting point
12. Subject B follows the same procedure for the magnified voice clicks as Subject A