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Ear Trading

Ear Trading
  • #: 22574
  • Price: free ($0.00) In Apple Store
  • Category: Games
  • Updated: 2011-03-31
  • Current Version: 1.0
  • 1.0 (iOS 4.0 Tested)
  • Size: 48.50 MB
  • Language: English
  • Seller: Brenda Moon
  • Requirements: Compatible with iPhone, iPod touch, and iPad. Requires iOS 3.0 or later
  • © 2010 Brenda Moon and Barry Moon
  •  Add to Favorite apps



Ear Trading is both a game and a generative music machine.

* fixed access to live data *

As a game, imaginary shares are traded using live data from the BATS Exchange. You start with $500, 000 and buy/sell to try to make your fortune. Each of the 5 shares has its own musical instrument with up to 8 sounds each. The trading volume for a share determines how many notes are played, and the share price determines the pitch. An upwards pitch sequence means the share price is going up and a downwards pitch sequence means it is going down. Using headphones, you can hear sounds for each of the 5 shares spatialized around you. The game screen shows you the data for each share and lets you rotate the shares and sounds to see them all.

A "Settings" screen lets you customize the way the music is generated. You can change the tempo (the rate of the beat), which sounds are allocated to each instrument, and a set of parameters called "Beat Tables". Beat Tables are probability tables that determine which beats of a "measure" or "bar" each instrument is most likely to be heard.

Shares can only be traded when the market is open, between 9am and 4pm weekdays, New York time. Because the game requires continuous live share data, you need to be connected to the internet through WiFi to play.

Even when the market is closed, you can still use the Settings editor to change the way the game sounds.

Please use headphones for the best game experience, and jam!

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The information may be outdated (2011-03-28 01:25:57). For actual information go to iTunes

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