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In the case of the Wurlitzer a vibrating steel reed acts as the zero potential electrode of a capacitor inducing an alternating current due to changes in the electro-static field (E-field). In the case of the Rhodes, characteristic sound properties emerge due to the interaction of the mechanical motion of a small tine interacting with the magnetic field (H-field) of the pickup. It is highlighted that the different timbre can be attributed to different characteristics of the pickup systems of both instruments. The measurements include high-speed camera measurement and tracking of the primary mechanical sound production mechanisms as well as audio recordings of the unamplified instrument signal. In this treatise, a description and comparison of the tone production mechanisms are presented based on measurements taken on both instruments, a Rhodes Mark II and a Wurlitzer EP300. This can be attributed to their specific mechanical-electromagnetic/electrostatic tone production.
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Their unique sound, that is comparable on a generic level, shows distinctive varieties in timbre and decay characteristics. They are used in such diverse musical genres as Jazz, Funk, Fusion or Pop as well as in modern Electronic and Dance music. Two idiomatic examples of electro-acoustical keyboards played since the 60s to the present day are the Wurlitzer E-Piano and the Rhodes E-Piano. Current Research in Systematic Musicology