Tondo on sale

Tondo, a very interesting and unusual app for iPhone / Touch has come down in price from $3.99 to £2.99.

If you don't know the app then here's the description:

Tondo lets you create and manipulate audio in a new way: by painting sound on a radial sonogram. With Tondo, you can learn to create sound out of its simplest elements, and how rhythm, timbre, melody and harmony all are closely related.

The basic principle behind Tondo is that all sounds can be built by adding together very simple sounds (sinusoid waves) with varying frequencies and amplitudes. Tondo organizes this information in a way that is easy to manipulate, by painting with specialized tools. As you paint the sound , the corresponding audio is generated. At any point, you can save the information or the audio you have generated and export it in a number of formats. If your device supports recording, it can analyze sound into its spectrum for further manipulation.

Tondo can be used for making samples for other programs to use, rhythms and experimental explorations of sound.

You can export the information which defines the sound onto the clipboard, which you can then paste into documents, mail to friends, post on blogs