David Levi, also known as Magnetovore, is a student studying electrical engineering who has created a fantastic and very innovative magnetic cello. This unique instrument resembles the size, shape, and playing style of an acoustic cello. However, rather than using a traditional bow, you use a magnetic rod which takes the place of the bow to induce a voltage in a coil that replaces the traditional bridge in a cello.
By moving the magnetic rod back and forth, you can control the voltage that is used to control the volume of the signal. The pitch of the instrument is controlled by resistive ribbons that have replaced the traditional strings and are controlled by a second voltage. Watch the video after the jump to see the innovative Magnetic Cello in action.
How the Magnetic Cello Works
The Magnetic Cello design doesn’t use any microcontroller or digital circuitry, just capacitors, resistors, and the occasional IC. This analog approach is quite fascinating as it relies on fundamental electrical engineering principles to produce sound. The magnetic rod, when moved, creates a varying magnetic field that induces a voltage in the coil. This voltage is then used to modulate the audio signal, effectively controlling the volume.
The resistive ribbons, which replace the traditional strings, are another innovative aspect of this instrument. These ribbons change their resistance based on where they are pressed, altering the voltage and thus changing the pitch of the sound produced. This method allows for a wide range of notes to be played, similar to a traditional cello but with an electronic twist.
Future Improvements and Potential
Levi is now working to improve the tone and playability of his Magnetic Cello. One area of focus is enhancing the sensitivity and responsiveness of the magnetic rod and resistive ribbons. By fine-tuning these components, he aims to make the instrument more expressive and versatile, allowing musicians to perform with greater nuance and emotion.
Another potential improvement is the integration of additional effects and sound modulation options. By incorporating more advanced circuitry, Levi could enable the Magnetic Cello to produce a wider variety of sounds, from classical cello tones to more experimental electronic effects. This could open up new possibilities for musicians and composers, blending traditional and modern musical elements in innovative ways.
The Magnetic Cello also has educational potential. As an instrument that combines principles of physics, electrical engineering, and music, it could serve as a valuable teaching tool. Students could learn about electromagnetism, circuit design, and sound production while also exploring their musical creativity.
In conclusion, David Levi’s Magnetic Cello is a groundbreaking invention that merges the worlds of music and electrical engineering. Its unique design and innovative use of technology offer exciting possibilities for both musicians and educators. As Levi continues to refine and develop his creation, the Magnetic Cello could become a significant addition to the world of musical instruments.
Source: Hack A Day : Magnetovore
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