The crystal in a crystal earpiece is a piezoelectric sound transducer. Back in the 1960s, these were fairly common in cheap transistor radios and hearing aids. Their sound fidelity isn’t very ...

Same Sky has added to its portfolio of disc-shaped piezoelectric elements, with devices from 12 to 35mm in diameter and down ...

The new rig drives the piezo element using a 27V source. After each ping is sent out, the microphone input is immediately captured to detect the return of the audible sound. [Jason] mentions that ...

The sound-suppressing silk builds off the group's prior work to create fabric microphones. In that research, they sewed a single strand of piezoelectric fiber into fabric. Piezoelectric materials ...