These devices convert a sound pressure wave to or from an electric signal.

The reeds can be viewed as transducers converting sound to and from an electrical signal.

The vibration of the reed is converted to an electrical signal by a pick-up.

In conventional hearing aids, known as analog models, the sound is converted to an electrical signal but never to a digital one.

As of 2012, the station is now off the air while it converts to a digital signal.

This output can be converted to a signal by passing it through a digital-to-analog converter.

The sound card converts the analog signal to a digital signal.

A transmitter that takes information and converts it to a signal.

This voltage is amplified, multiplexed, and converted to a digital signal.

It electromagnetically converts the vibration of the strings to an electric signal.