Planephones

High school (ages 12+)
Transportation

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/planephones

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the core technology?Active Noise Cancellation (ANC) utilizing destructive interference of sound waves
2. What is the passive noise attenuation?Achieved through physical design, materials, and earcup seal
3. How do Planephones stop airplane noise?They use tiny microphones to listen to the engine hum, then create an opposite sound wave that cancels it out. The ear cups also block higher‑frequency sounds like conversations.
4. Why are Planephones useful for business travelers?They let business travelers focus on work, make conference calls, or rest on long flights. This helps reduce jet lag and keeps them alert.

Destructive Interference: When two waves combine to cancel each other out, reducing amplitude.
Psychoacoustics: The study of how humans perceive sound and its effects.
Digital Signal Processing (DSP): Using digital computers to process audio signals for noise reduction and enhancement.