You can't use an 80-year-old technology to solve an 80-year-old problem. Taking stereo speakers as an example, conventionally designed and manufactured speakers are almost universally subject to some degree of "echo" distortion. This occurs mainly because the backward-sending sound signal bounces back from the back wall of the speaker. The sound waves sent forward by the speaker are caused by interference.
In order to solve this problem without using sonic absorption, Boaz Dekel, an industrial designer who graduated from the Bezalel School of Art and Design in Israel, proposed a very unique solution: remove the back wall of the speaker. Simply put, Dekel conceived a circular speaker, Aleph1. In this speaker, the backward sound enters a "self-feeding loop" to prevent it from bounce back directly, interfering with the sound signal that is output forward," Dekel explained.
Sounds like a good idea? Yes, but this method is impossible to manufacture using traditional mold methods. So Dekel turned to 3D printing to prototype his design.
Using the powerful multi-material printing capabilities of the Objet500 Connex3 color multi-material 3D printer , Dekel began to turn his visionary Aleph1 speakers into reality. After testing Stratasys' various digital materials, he discovered a way to combine rigid and flexible materials to achieve the perfect balance of design, aesthetics and acoustics.
“With 3D printing I was able to quickly study the reflection of sounds in different geometries and different material configurations to determine which ones are best for my needs. Other manufacturing or modeling techniques simply can't give me this freedom.†Dekel said.
According to Dekel, Aleph1's unique self-propelled geometry preserves the echo's sound energy and allows it to participate in the reproduction of sound, ultimately producing a pure, open and natural sound with good detail.
Dekel said: "In the design process, I also printed a functional model in 3D. The model is printed at one time and can maintain its structural integrity based on the realization of its complex internal geometry. There is a physical model. Help me to study the theoretical principles behind the product and evaluate its feasibility."
According to Tiangong, Dekel's last Aleph1 circular sound was a combination of flexible and rigid 3D printed materials . Generally speaking, it is divided into three layers, the rigid layer of the diamond shape is used as the sound reflection layer; the flexible intermediate structure acts as the neutralization; the outermost layer of the rigid material structure is used as the outer casing, and it is most worth mentioning that these are used. The Objet500 Connex3 is printed in one-off overall 3D without assembly. â€
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