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Microphones Theory

Subject : engineering
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Condenser; Multiple; Side Address; 48V Required; Manufactured by AKG; Dual Diaphragm; Nine selectable pickup patterns; Peak Hold LED; The reference microphone for almost all comparative microphone tests.






2. Small Diaphragm Electret condensers; Extremely flat frequency response; Omnidirectional pattern.






3. Timing difference between two waves; Waves interfere cancelling each other out and altering frequency response; Measured in degrees; Can be caused by reflections of sound waves; Can be reduced by putting cabinet or amp at an angle.






4. Responds to air pressure variations outside of the capsule; Not selective of direction; Natural polar pattern is omnidirectional.






5. Term coined by Sir Charles Wheatstone derived from the Greek words 'micro' (small) & 'phon' (sound).






6. + & + (Front & rear in equal positive amounts)






7. The reduction in the amplitude of a wave due to the dissipation of wave energy.






8. Sounds that arrive from angles other than the 0






9. Older ribbon microphone weighing 8.5 lbs. nearly all of it the large magnet!






10. Dynamic; Cardioid; End Address; Manufactured by Electro Voice; Large Diaphragm; Humbucking Coil; Bass Roll Off Switch; Minimizes proximity effect; Ideal for broadcasting and sound engineering techniques.






11. Measurement similar to how our hearing works in frequency response charts.






12. Dynamic; Cardioid; End Address; Manufactured by Shure; Considered the industry standard for live vocal performance microphones; One of the best- selling microphones in the world.






13. Configured to simulate the spacing and directivity of human hearing; Box shape with two 'ears' on each side.






14. Derived from two words; 'electr' from electrostatic and 'et' from magnet.






15. Pair of omni mic separated by a circular absorptive baffle.






16. Angle of maximum signal rejection in a microphone polar pattern.






17. 4800 ft/sec






18. Used to filter heating current in certain mics; Invented by Georg Neumann.






19. Used to make sure you have accurate angles & capsule spacing when miking in stereo.






20. Causes an increase in low frequency response as one gets closer to the source.






21. One of the world's greatest condenser microphones prized for the CK12 capsule.






22. Coincident stereo miking techniques that has two microphone diaphragms occupying (as near as possible) the same space; Capsules often on top of each other; Not good for noisy locations.






23. Solid state version of the U67.






24. + (only); (Front capsule alone)






25. Adds two outer right and left rear facing mics to a Decca tree for surround sound depth.






26. Extremely narrow area of sensitivity in front with extended reach; Also has multiple lobes which vary in position with frequency; Not made from combining pure patterns - but created by using an interference tube.






27. Forward facing bipolar mics spaced 20cm apart.






28. Measurement of the mic's sensitivity; Measured in mV/Pa (millivolts per Pascal).






29. Demonstrated the first stereophonic transmissions via the Theatrophone in 1881.






30. The property of certain crystals that causes them to produce voltage when a mechanical pressure such as sound vibrations is applied to them; Originates from Greek word 'piezein' (to compress).






31. The tuning machines of a guitar; Part of the tuning key that strings are threaded through and twisted.






32. First to mass produce the condenser microphone in 1929; Improved cutting lathe technology by developing direct drive turntables; Invents 48V Phantom Power to power the new condenser microphone for Norwegian State Television.






33. Part of a mic stand that the mic stands on.






34. Moving a conductor (a coil of wire) through a magnetic field will cause a voltage to be induced across the conductor.

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35. Condenser; Cardioid; End Address; Manufactured by Shure; Small condenser design that is great for instrument recording.






36. Phenomenon causing carbon microphones to lose sensitivity as granules become packed together over extended use; To remedy problem mic is gently rapped on hard surface.






37. The arm of the mic stand; Includes the angle adjust & telescopic adjust.






38. Basket/grille made out of a specific type of copper wire to block protect the mic from physical damage and to protect the mic from stray RFI






39. Shows the level of self- noise from a microphone's internal electronics; Measured in dB (decibels).






40. The moving plate of a condenser capacitor; Constructed of a thin piece of metal or thin plastic - such as Mylar - coated with gold or nickel; .05 - 10 microns thick.






41. Utilized primarily on condenser and ribbon mics to isolate it from vibrations that might otherwise be transmitted to the microphone through the mic stand.






42. Shure's newer ribbon studio mics; KSM 353 & 313 (Roswellite); KSM 44 - 32 - & 27.






43. The attachment that holds a microphone in place on the mic stand; Comes in various shapes - sizes - and applications.






44. The world's first single element cardioid mics.






45. Tube microphone capable of SPL's over 140dB.






46. - Omnidirectional: 1 - Cardioid: 1.7 - Supercardioid: 1.9 - Hypercardioid: 2 - Bidirectional: 1.7






47. Known as 'The Bottle' this was the first mass - produced condenser mic.






48. + & - (Front & rear in opposite equal amounts)






49. EMI employee that was the innovator of many coincident pairing mic techniques; Mid/Side & Blumlein techniques are associated with him.






50. Pair of omni mic elements mounted on opposite sides of a spherical shaped capsule.






Can you answer 50 questions in 15 minutes?



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