Category Archives: Innovation

Beyond the Guitar

      Events, Evolution, Innovation, Nu Series, Pickups

The Halldorophone

It’s amazing what creative minds can come up with. There is exciting innovation everywhere, and it is not limited to the guitar. I thought violin (and cello) builders are the most conservative. After all they’ve “perfected” the violin construction and wouldn’t care for anything more beyond that, right? Well, no…

Meet Halldór Úlfarsson and his invention, the Halldorophone —a Cello-ish electro acoustic string instrument designed to facilitate feedback on the strings. The Halldorophone features 8 strings (for the newer models). 4 on top and 4 resonator/harmonizing strings under the fingerboard. This kinda reminds me of the Hardanger fiddle with sympathetic “understrings” that resonate under the influence of the other four.

Each string has its own pickup, now using the Nu multichannel pickups on the latest models.

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Computational Hexaphonic Guitar

      Design, DSP, Electronics, Innovation, Nu Series, Pickups

It’s nice to see our pickups in the academe. Chengxiang Ren and Jeffrey Huang, Cornell University, Electrical and Computer Engineering, used the Cycfi Neo (now Nu) polyphonic pickups in their Master’s project. I’ll try to learn more about this project and these cool people. Their ideas are perfectly aligned with mine.

RenHuang-2In this project, we designed a computational guitar that consists of a hexaphonic pickup and a digital signal processor (DSP). As an example application, we implemented a pitch correction algorithm that corrects the pitch of each string in real-time, which enables us to play the guitar “in-tune” when it is not. Our pitch correction algorithm operates in real time on a Texas Instrument DSP board (TI DSK6713) and combines frequency-domain pitch detection and time-domain pitch shifting.

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