Pitch

CYSF · 2026

Tempe Bartel · Brant Christian School

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Overview

For this test we tested 10 grade 7/8 students to see how high or low frequency they could hear. I first split the students into musicians and non-musicians. After the test I found out that the musicians can hear better than the non-musicians.

Hypothesis

Hypothesis: My hypothesis was that the students that played instruments would hear higher and lower than the students that didn’t, my hypothesis was correct.

Research

1. Humans have a sense called hearing. 2. We use our ears to hear. 3. Ear hairs vibrate faster at higher pitches-vise versa.

Variables

Manipulated: 1. Different students (6 girls\, 4 girls) Responding: 1. Range of hearing (Hz) Controlled: 1. Tested at 3:00 pm 2. Online pitch generator\, 3. Computer speakers volume 4. Low to high pitch tested

Procedure

1. Researched a student friendly online pitch generator 2. First I chose ten of my classmates and found out the ones who did or didn't play an instrument 3. Then I used random name selection to pick the students to test. 4. Using the same computer speaker volume at the same time of day 5. Tested from low to high pitches 6. Recorded the frequency in Hz

Observations

Do Play Instrument:

1. Andrew Meadows Lowest Heard: 141 Hz Highest Heard: 17 004 Hz

2. Hannah Finny Lowest Heard: 189 Hz Highest Heard: 18 328 Hz

3. Matthew Krause

4. Janessa Anderson Lowest Heard: 123 Hz Highest Heard: 18 886 Hz

5. Adriana Atme

6. Kyla Bosman Lowest Heard: 128 Hz Highest Heard: 18 055 Hz

7. Ava Riddle

8. Kristiana Wyatt

9. Ivy Tutt

10. Elias Klassen

11. Carl Overland

12. Christopher Doerksen

13. Christopher Fearon

14. Lincoln Hiller Lowest Heard: 140 Hz Highest Heard: 18 886 Hz

15. Ace Olmsted

16. Jacob Abild

17. Caleb Scottt

Don't Play Instrument:

1. Gage Glover Lowest Heard: 150 Hz Highest Heard: 18 328 Hz\

2. Sini Curtis

3. Katia Kenney Lowest Heard: 150 Hz Highest Heard: 18 530 Hz

4. Wesley Martin

5. Andrea `Robert Lowest Heard: 241 Hz Highest Heard: 18 100 Hz

6. Olive King Lowest Heard: 139 Hz Highest Heard: 18 420 Hz

7. Asher Greidanus

8. Nathaniel Korthuis

9. Hunter Heuman Lowest Heard: 157 Hz Highest Heard: 17 965 Hz

Average of Musicians: Lowest Heard: 144.2 Hz Highest Heard: 18 231.8 Hz

Average of Non-Musicians: Lowest Heard: 702.4 Hz Highest Heard: 18 168.6 Hz

Analysis

Pitch - Science Fair 2025/2026 Average Musicians: Lowest: 144.2 Hz Highest: 18 231.8 Hz

No-Musicians: Lowest: 702.4 Hz Highest: 18 168.6 Hz

Do play an instrument | Do not play an instrument

Andrew Meadows Lowest heard: 141 Hz |

Highest heard: 17 004 Hz | Gage Glover Lowest heard: 150 Hz

Highest heard: 18 328 Hz |

Hannah Finny - Parents used to play instruments Lowest heard: 189 Hz |

Highest heard: 18 328 Hz | 2. Sini Curtis

Matthew Krause | 3. Katia Kenney

Lowest heard: 150Hz |

Highest Heard: 18 530 Hz |

Janessa Anderson - Parents used to play instruments Lowest heard: 123 Hz |

Highest heard: 18 886 Hz | 4. Wesley Martin

| |

1. Adriana Atme

| 5. Andrea Robert

Lowest heard: 241 Hz

Highest heard: 18 100 Hz | |

1. Kyla Bosman

Lowest heard: 128 Hz

Highest heard: 18 055 Hz | 6. Olive King

Lowest heard: 130 Hz

Highest heard: 18 420 Hz | |

1. Ava Riddle

| 7. Asher Greidanus | |

1. Kristiana Wyatt

| 8. Nano Korthuis | |

1. Ivy Tutt

| 9. Hunter Heuman

Lowest heard: 157 Hz

Highest heard: 17 965 Hz | |

1. Elias Klassen

| |

1. Carl Overland

| |

1. Kiffer Doerksen

| |

1. Christopher Fearon

| |

1. Lincoln Hiller

Lowest heard: 140 Hz

Highest heard: 18 886 Hz |

| |

1. Ace Olmsted

| |

1. Jacob Abild

| |

1. Caleb Scott

| |

Conclusion

Musicians, from my research, hear high/lower pitches. While non-musicians can't hear as well as musicians. I think that musicians can hear high and lower pitches because they play instruments. But you can lose your hearing from playing insturments.

Application

1. Doctor - to measure normal hearing

2. Hearing Aids companies

3. Comparing our hearing to other animal

Sources Of Error

1. Students are different distances away from the computer. 2. Not stopping the scale at the exact moment

Citations

1. Online pitch generator - https://www.szynalski.com/tone-generator/ 2. Ear diagrams - https://www.healthyhearing.com/report/53241-How-we-hear-explainer-hearing 3.