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Experiment about shepardtone based tritones and visual induced biases

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A small project, to measure the visual bias when judging tritones.

The "tritone" consists of 2 distinct shepard tones with half an octave tone difference, played successively.

Every human has it's own way of perception: One would say after hearing the C-F# tritone, that the F# is clearly higher-pitched than the C, but another person would judge the C as the higher tone.

We tried to measure, if there is a possibility of manipulating the perception by adding a visual stimulus by using this program coded in C++.

Our outcomes are, that it is possible to manipulate the perceptions of the individuals significantly by a visual stimulus.

If you're interested in retesting our outcomes, feel free to download, use and edit this program by your own needs.

The code is quick and dirty but I will clear it up, as soon I have the time.

Tritone-Experiment Web Site


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