A tritare is an experimental guitar invented in 2003 by Samuel Gaudet and Claude Gauthier of the University of Moncton of a family of stringed instruments which use Y-shaped strings, instead of the usual string-shaped strings; Y-shaped strings can produce sounds which are harmonic integer multiples, but also nonharmonic sounds more akin to those produced by percussion instruments. The Y-strings create, when tuned correctly, Chladni-patterns. Gaudet contends this allows for greater possibility [1] (although the value of this greater possibility is questioned [2]). The model uses 6 strings and was for a short period available, but not anymore.
The sound effects achieved with the instrument are similar to the sounds that can be achieved with the 3rd bridge playing technique.