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  • #: 46493
  • Price: free ($0.00) In Apple Store
  • Category: Music
  • Updated: 2012-03-29
  • Current Version: 2.0
  • 2.0
  • Size: 5.90 MB
  • Language: English
  • Seller: Michael Aldridge
  • Requirements: Compatible with iPhone 3GS, iPhone 4, iPod touch (4th generation), iPad 2 Wi-Fi, and iPad 2 Wi-Fi + 3G. Requires iOS 4.2 or later.
  • © 2011 Michael Aldridge
  •  Add to Favorite apps



Ethero is the iPhone’s answer to the etherophone, or Theremin as it’s better known. The Theremin is one of the earliest electronic instruments ever created and it’s now famous for it’s signature eerie sound.

The traditional Theremin is usually controlled without any physical contact, with the player using each hand to control both the pitch and the volume of the sound. Ethero works in a slightly different way, but it still attempts to emulate the real instrument!

Ethero takes the amount of light coming into the device’s camera and translates it into a sound frequency. So, waving your hand or another object in front of the device camera will change the pitch of the sound. The more light coming into the camera, the higher the pitch.

To control the volume of the sound, simply touch the screen of the iphone and move it up and down the screen.

There are a couple of other useful features of Ethero...

- a simple calibration facility. To get the full frequency range of the instrument even when in poor lighting conditions. Press the cog icon, hold your device still then press the tick icon. If you want to reset the calibration, just press the cog icon again and press the cross icon.

- an LFO (low frequency oscillator) which adds that trademark eerie ‘wobble’ to the sound. Press the ‘LFO on’ button to switch it on, and again to switch it off.

- a lock to chromatic frequencies.  This makes the instrument easier to play if you’re just getting used to it, as only frequencies on the ‘usual’ chromatic scale are played and the ‘glide’ from the sound is removed. Press the music-note button to switch to chromatic mode, and again to switch it off.

Hope you enjoy playing Ethero, but do make sure you don't turn the volume up too loudly. Protect your ears!

If you have any problems or ideas, just head over to http://michaelaldridge.info/ and drop me an email.

What's New in Version 2.0

Updated to work properly with retina displays.

iPhone 3GS, iPhone 4, iPhone 4S and iPad 2 are supported

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The information may be outdated (2017-03-06 22:05:56). For actual information go to iTunes

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