Trainer Name: Ethan Wright
Location: Pallet Town
Pokemon:

Circut (20/20) Cynder (20/20) Typhoon (20/20) Shade (19/19) Fairy Murderer (9/9)

Partner Pokemon:
Egg:
Items: Pokeballs(8), Potions (2), Shiny Charm, Dusk Stone
Points: 39

All the acoustics physics stuff is truth. None is made up!

As we continued through the cave, I felt myself get a headache. After Max mentioned the low frequency sounds used by the military, I remembered the acoustics unit we did last year at university. Part of that included a work placement. 4 hours a week working with an audio engineer to set up live venues and studios.

The headache became worse, and I tried to think of anything to relieve the pressure that was building up in my head.

Sound is made up of vibrations in the air. The faster these vibrations, the higher pitched the sounds. For every vibration cycle per second, the frequency is 1 Hz. 5 cycles per second is 5 HZ. The human hearing range is 20 Hz to 20,000 Hz.

Suddenly I remembered the key to a bit of releif. Phase reversal.



If there are two sounds at the same frequency, but with a horizontally mirrored wave, the sounds cancel out.

"Guys, I might be able to help with the headaches." I said, pulling out my laptop, "I studied acoustics as part of my physics course last year, and if I am lucky I might still have... Got it."

I found what I was looking for. The frequency generator app on my laptop that I used back in the work placement. We would test different frequencies in the rooms we helped design, seeing which spots would cancel out, and which would amplify.

I opened the app, and pressed the phase reverse button. This would flip the frequencies the laptop put out.

As we walked for the next ten minutes, I had the laptop play different frequencies, between 1Hz and 20 Hz. The frequencies too low for humans to hear. The closer I would get to finding the frequency being used to upset the Pokemon here, the more it would cancel out the area near us, and provide some relief to the headache. Finally I found it. 12Hz.

With the reversed 12Hz frequency playing, I felt the headache lighten. Though my head still hurt, it wasn't as bad.

"That feel better?" I asked.