Blog

Oct 17, 2024

Crystal microphone | electroacoustic device | Britannica

…of a piezoelectric crystal (crystal microphone). In each case, motion of the diaphragm produces a variation in the electric output. By proper design, a microphone may be given directional

…of a piezoelectric crystal (crystal microphone). In each case, motion of the diaphragm produces a variation in the electric output. By proper design, a microphone may be given directional characteristics so that it will pick up sound primarily from a single direction (unidirectional), from two directions (bidirectional), or more…

The crystal microphone uses a piezoelectric crystal as its transducer. Piezoelectric crystals are durable and cheap, and they have relatively large electrical output; for this reason, they are often used in telephones and portable sound systems. They do not have very good linearity and so are…