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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. Microphone with 4 large diaphragm condenser capsules; 3 bidirectional and 1 omni; Can be combined to make any polar pattern.






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






3. Device or transducer used for converting sound waves or acoustical energy into electrical energy






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






5. Radio Frequency Interference






6. Best signal- to- noise ratio; Minimal phase cancellation; Quality representation of what is being recorded; Attempt to ignore unwanted external noise.






7. The measure of how quickly a mic's diaphragm will react when it is hit by an acoustic sound wave.






8. Solid State and Tube.






9. Mics placed in front of an instrument or ensemble (in a left/right fashion) to obtain an overall stereo image; Sound more open and natural; Weaker center image than X/Y; Great for creating background sounds that will blend in with foreground sounds.






10. More compelling sound - giving both depth and perspective.






11. The measuring device used for loudspeaker room response testing.






12. Shows the max sound pressure level possible with a certain amount of distortion; Measured in dB (decibels).






13. 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.






14. Dynamic; Cardioid; End Address; Manufactured by Shure; Popular musicians' choice due to its sturdy construction and ability to work well with instruments that produce high sound pressure levels.






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






16. Keep in proper case; Never disassemble shockmounts






17. Flat plate that controls or directs the flow of sound energy in a crystal/ceramic mic.






18. An extremely strong acoustic nano- film designed to replace the foil ribbon in ribbon microphones.






19. Considered to be the best mic ever made; VF14 Tube.






20. French broadcasting stereo mic technique; An X-Y type with the mics 17cm apart and at a 110






21. Bioacoustic Research; Documentary Journalism; Radio; Film/TV Production; Audio Post Production.






22. The part of the guitar you turn to tune the strings in order to get the right sound out of the guitar when one plays.






23. Early example of switchable polar patterns; Had both a dynamic and a ribbon capsule inside of it which when combined produced other polar patterns.






24. Device used to measure sound loudness; Often used to measure and balance the loudness of each speaker in a home - studio - or live venue or theater system.






25. Barrier made of shaped wire covered with a piece of nylon that is placed between a sensitive mic and the talent to avoid damage to the diaphragm of the mic.






26. Pair of cardioids facing to the front and rear - plus a sideways - facing figure 8; Mid- sides pair plus another rear- facing cardioid which is combined with the same Figure 8 mic for the surrounds.






27. Digital device used to Fourier Forms; Used to measure the specific number of sine waves in a specific frequency in a specific setting.






28. Developed the condenser microphone in 1916 at Bell Labs.






29. When using two microphones reverse the polarity of the bottom mic.






30. Dynamic; Super-Cardioid; End Address; Humbucking Coil; Brilliance Switch; Manufactured by Sennheiser; Acknowledged as the most accurate and versatile dynamic mic available.






31. The first microphone sold by Shure; Military awarded Shure a contract to build microphones in WWII.






32. 4800 ft/sec






33. Allows all high frequencies to pass; Blocks the lower frequencies from being processed.






34. Founded AKG at the end of WWII in Austria.






35. The first dynamic microphone with changeable polar patterns.






36. Small microphone attached to the bridge of a string bass or to an acoustic guitar to amplify its sound.






37. Most sensitive to sounds arriving from the front while rejecting sounds from rear; Shaped like a heart; Rejects most signals from 180






38. Works exactly like condenser mic but one of the two plates is manufactured as a capsule with a permanent static charge so there is no external power source necessary; Requires phantom or battery to charge internal mic preamp.






39. Used in production sound for multiple perspectives on the set; Used in Audio Post to record a number of mics into a recorder with minimal set- up & tear down.






40. Consumers can listen to live broadcasts over telephone lines; Individual one- way experience that required a subscription service to listen to performances.






41. Mid-Section of the mic stand; Includes the clutch.






42. The first AKG dynamic microphone.






43. 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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44. Raises the body of the microphone increasing height.






45. Tube manufactured for the new version of the AKG C12 (called the C12-A); Powered by Norelco.






46. 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.






47. Delicate and require extreme care; NO PHANTOM POWER; Becoming more popular than ever because of highly efficient magnets - lower manufacturing costs - and great fidelity.






48. 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






49. Big + & + (More front with less positive rear)






50. Pure polar pattern with which the microphone is equally sensitive in all directions; Great for capturing ambiance or room reverb.