World’s first all rubber speaker made from artificial muscles is thin, soft and bassy

Tokai Rubber Industries has developed the world’s first all-rubber speaker. This speaker utilizes Smart Rubber, which conducts electricity and can freely expand or contract, to generate sound.
Previously, the company developed flexible, all-rubber touch sensors using Smart Rubber. This all-rubber speaker arose from the company’s new line of development: materials for artificial muscles.   Q. “Until now, thin speakers have been piezoelectric and film types, as used in …