The app will remain free, and will not have ads. The app was created as a utility used in the development in other Secret Base Design apps we’re making it freely available, because we found it to be useful, and thought others might like it too. If you’re interested in understanding the nature of sound, use Spectral Eye to get a better view. Play an instrument, music from your iTunes library, or have it listen to whatever sounds are nearby - the display is fun to watch. It’s the frequencies present in the notes that make a Telecaster sound different from a Les Paul, and a piano different from a trumpet. For a guitar, it’s easy to see that in addition to the root frequency of a note, there are also a number of harmonic frequencies - and these change based on the strings used, the pickups, and the amplification system. Play music, and Spectral Eye will reveal the frequencies. The strength of each frequency is represented by the size of a red circle.
Spectral Eye rearranges the FFT into a spiral, so that frequencies that are an octave apart are lined up as rays from the center of the display.
Normally, this information is displayed on a chart, and there are number of excellent apps that do exactly this. Most sounds are built up from a variety of sine waves a simple whistle might be a single wave, while a guitar, piano, or the human voice have many waves added together.īy using a Fast Fourier Transform, sound can be decomposed into each frequency. Spectral Eye analyzes incoming audio signals to extract the underlying frequencies.
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Spectral Eye is a free oscilloscope plugin developed by Secret Base Design.
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