Paper Speaker Art
How It Works
- The pattern should have 5-10 concentric rings, evenly distributed (metal coil). One end needs to connect to a wire connected to a + end and the other wire, to the - end. In this example, I poked a hole and ran copper tape up the back to the edge, so it could connect with an alligator clip. There are other ways to accomplish this, but the key is that a wire cannot touch the conductive concentric circles, unless it is insulated.
- In this piece, I wanted to connect multiple speakers together to play one song, but they can also be designed to connect to different songs for mashups or for instrumental constructions. To connect them, I ran copper tape up the back from one end of a speaker to the next.
- In this piece, the magnet is attached to a wand so that people can easily interact with the piece to produce music.
Why It Works
- The metal coil creates a magnetic field when electrical current begins to flow through it (electromagnet).
- Vibration is caused when the coil is near a magnet: The magnetic field is rapidly changed as electricity pulses passes through the coils and the direction of the magnetic fields changes (in step with the pulses), causing a rapid attraction-repelling action. To make sound, the wires must be up against a surface that is able to vibrate--not too hard, not too soft.
- frequency controls the pitch, and is controlled by the size of the cone, and the tightness of the material. For example, if the vibrating material is stiff and tight, it will vibrate quicker, creating a higher pitch; if it is looser, it will vibrate slower and longer, producing a lower pitch.
- amplitude governs the volume: This is how large the vibrations are, and it is a product of the pulse of electricity and the material vibrating.
- copper tape
- card stock
- transfer tape
- soldering iron
- 2 alligator clips
- 2 wires
- wire cutters
- exacto knife
- wood + laser cutter or purchase a frame
- vinyl cutter
- Adobe Illustrator
- wooden wand
Alternative Materials/ Going Wireless: Use conductive fabric to laser cut patterns. Cones can help amplify sound, and can be included in the interactive sculpture. Produce stereo or double stereo sound. Make a Microphone: Reverse the process.
NGSS: MS-PS4-1 - 2; HS-PS4-1