Leach, W. Marshall, Jr. School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, Georgia.
- Dynamic drivers
- Small-signal parameters
- Driver sensitivity
- Closed-box systems
- Vented-box systems
- Passive-radiator systems
- Band-pass systems
- Horn-loaded drivers
- Related Primary Literature
- Additional Reading
A device that converts an electrical signal from an amplifier into sound. A loudspeaker driver is an electromechanical-acoustic device with two electrical input terminals, to which an electrical signal is applied, and a diaphragm which vibrates and radiates sound. An electromechanical motor mechanism exerts a force on the diaphragm to cause it to vibrate. By far the most common type of motor mechanism, the electromagnetic-mechanical transducer, employs a coil of wire immersed in a magnetic field; electric current flowing through the coil causes a force to be exerted on the coil which is mechanically coupled to the diaphragm. A less common type of motor mechanism is the electrostatic-mechanical transducer. It uses a capacitor to which an electric voltage is applied, causing a force to be exerted between the capacitor plates, which is mechanically coupled to the diaphragm. Two types of electrostatic transducers are used: the piezoelectric transducer and the condenser transducer. The piezoelectric transducer uses a piezoelectric crystal between the capacitor plates. The condenser transducer uses an air dielectric. One plate of the capacitor is a flexible membrane which serves as the diaphragm. See also: Audio amplifier
The content above is only an excerpt.
for your institution. Subscribe
To learn more about subscribing to AccessScience, or to request a no-risk trial of this award-winning scientific reference for your institution, fill in your information and a member of our Sales Team will contact you as soon as possible.
to your librarian. Recommend
Let your librarian know about the award-winning gateway to the most trustworthy and accurate scientific information.
AccessScience provides the most accurate and trustworthy scientific information available.
Recognized as an award-winning gateway to scientific knowledge, AccessScience is an amazing online resource that contains high-quality reference material written specifically for students. Contributors include more than 10,000 highly qualified scientists and 45 Nobel Prize winners.
MORE THAN 8700 articles covering all major scientific disciplines and encompassing the McGraw-Hill Encyclopedia of Science & Technology and McGraw-Hill Yearbook of Science & Technology
115,000-PLUS definitions from the McGraw-Hill Dictionary of Scientific and Technical Terms
3000 biographies of notable scientific figures
MORE THAN 19,000 downloadable images and animations illustrating key topics
ENGAGING VIDEOS highlighting the life and work of award-winning scientists
SUGGESTIONS FOR FURTHER STUDY and additional readings to guide students to deeper understanding and research
LINKS TO CITABLE LITERATURE help students expand their knowledge using primary sources of information