Section 1.2 : Basic notions

The most common electroacoustic transducers can be divided into two groups:

• Sensors, which transform a mechanical or acoustical quantity into an electric one, for example:

  • Microphones;

  • Accelerometers...

• Actuators, which transform an electrical quantity into an acoustical or mechanical one, for example:

  • Loudspeaker drivers;

  • Earphones;

  • Shakers...