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EverTones

EverTones
  • #: 204973
  • Price: $0.99 In Apple Store
  • Category: Entertainment
  • Updated: 2009-02-18
  • Current Version: 1.0
  • 1.0
  • Size: 31.20 MB
  • Language: English
  • Seller: Steven Cross
  • Requirements: Compatible with iPhone, iPod touch, and iPad. Requires iOS 2.2.1 or later
  • © 2008 Steven Cross
  •  Add to Favorite apps

 

Description

EverTones is a sound toy that brings a very cool auditory illusion to your iPhone or iPod Touch.

This application lets you play either a single tone or series of notes that endlessly increase or decrease in pitch but never ultimately end up any higher or lower, no matter how long you listen.

This illusion is sometimes referred to as an audio barber pole since the sonic effect is similar to the behavior of the white and red spiral stripes that seem to keep climbing upward as a barber pole spins. People have also referred to it as the audio equivalent of M. C. Escher's lithograph "Ascending and Descending" which depicts a never ending staircase.

The effect was described by Bell Labs psychologist Roger Shepard in a 1964 paper entitled "Circularity in Judgements of Relative Pitch" which was published in the Journal of the Acoustical Society of America.

A version of the effect has been identified in numerous musical works including Pink Floyd's Echoes, Queen's A Day at the Races, Robert Wyatt's Rock Bottom, Bach's Fantasy and Fugue in G minor for organ, and Chopin's Etude no. 3, op. 10 as well as in the sound of the Bat-Pod in the Batman film, The Dark Knight.

Lots of fun and a great conversation piece!

A great choice for those who enjoy audio / sound oriented entertainment and utility apps like Sound Grenade, Sound Grenade Pro, Ambiance, or White Noise.

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Rated 3/5 based on 3 customer reviews.

 

0/5 stars

Worst app ever

:
No one should buy this stupid app it makes no sense where whoul i ever use this app get a life and make a better app i thought it would do some thing cool with my music but no all it did was play an annoying tone. Never get this app, I hope you never make another app like this. STOP MAKING APPS!!!!

5/5 stars

A very nice little app!

:
The effect is really neat and it's fun to listen and try to figure out how it works. It really does sound like it is getting higher or lower forever. It would be nice if they added a choice of instruments to use for the sound in an update. I am not sure what the last reviewer is talking about. This app does EXACTLY what the description says it will. It doesn't say a thing about doing anything at all with your own music and the tone is actually very nice sounding. Maybe he or she bought it without reading what is was first. I may not listen to it every day but my friends and I have had fun with it and I often find myself pulling someone over and saying "Hey listen to this!". It won't change the world but it is definitely worth a buck!

5/5 stars

This is so cool

:
it's wierd because it sounds like it just keeps going up (or down) but it never actually gets higher! Cool acoustic illusion

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The information may be outdated (2011-04-25 10:24:50). For actual information go to iTunes

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