Speed ​​receiver

Velocity receivers are microphones in which the generated electrical quantity is proportional to the instantaneous speed ( speed ) of the mechanical system, for example to the instantaneous speed of the microphone membrane (and not to the instantaneous speed of the air particles, see rapid receiver ).

The speed receivers include u. a.

• Sensors that work according to the electrodynamic converter principle
  • z. B. dynamic microphones
    • like moving coil and ribbon microphone
• Sensors that work according to the electromagnetic converter principle
  • z. B. Pickups on record players .

If, on the other hand, the generated electrical quantity is proportional to the deflection of the membrane , this is called an elongation receiver . These include B. the condenser microphones .

There is also a classification of the microphones, which is based solely on the design of the microphone capsule and not on the electrical principle:

• Pressure receiver : closed capsule, produces omnidirectional characteristics - scalar
• Pressure gradient receiver : capsule slightly opened on the back, generates directional microphone characteristics - vector

literature

• Thomas Görne: Microphones in theory and practice. 8th, new, revised and expanded edition. Elektor-Verlag, Aachen 2007, ISBN 978-3-89576-189-8 .