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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. Used for stereo miking to ensure correct balance and imaging.






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






3. Commonly utilize large diaphragm dynamic mics.






4. 12V DC; 24V DC; 48V DC






5. Sub- frequency (below 100Hz) capture device designed for use with kick drums and floor toms as an alternative or supplement to a traditional microphone.






6. Dynamic; Cardioid; End Address; Manufactured by Sennheiser; Very small and compact; Especially suitable for use with drums and brass instruments; Includes a clip to mount directly on drums.






7. Sounds that arrive from angles other than the 0






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






9. 2 - 4 ft. from player; Placed below the line of sight of the bell - rotated at about 30 degrees off axis - and tilted upward.






10. Mic in which the diaphragm moves in response to sound waves and an attached pin/rod moves; Coil attached to pin/rod moves alone with the diaphragm.






11. 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.






12. Stereo coincident pairing where the middle mic (usually a cardiod) is facing source and a bidirectional side mic is placed at 90






13. The method by which microphones are classified.






14. Coincident pairing of two bidirectional mics that make a pattern of crossing Figure 8's.






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






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






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






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






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






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






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






22. Built by AKG for Telefunken and regarded as one of the best vintage condenser microphones ever.






23. Condenser; Cardioid; Side Address; 48V Required; Large Diaphragm; Manufactured by AudioTechnica; Transformerless circuitry virtually eliminates low- frequency distortion.






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






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






26. Modern drummer who has created a large kit and innovated several ways of capturing the sound from his massive kit.






27. Condenser; Cardioid; End Address; 48V Required; Manufactured by Neumann; Consists of three compact miniature microphones; Has a gentle rise at about 9 kHz that provides tonal balance that is fresher and livelier.






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






29. The first phantom powered condenser microphone designed for use by Georg Neumann for Norwegian State Television.






30. Voltage applied to piezoelectric material will cause it to deform or change shape; NO PHANTOM POWER!






31. E = Blv - e - Electromotive Force (in volts) - B - is the magnetic field strength - l - is the length of the conductor - v - is the velocity of the conductor moving through the magnetic field






32. Tough & rugged; Can work in extremely high SPL environments; Less responsive to transient frequencies b/c of diaphragm mass is heavier than sound waves.






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






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






35. Proportional to: Magnetic field strength; Length of the conductor; Velocity of conductor moving through the magnetic field.






36. 4800 ft/sec






37. Coincident pairing angled between 90






38. Stereo configuration using a spaced pair 3-10 feet apart.






39. 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.






40. Solid State and Tube.






41. Pure polar pattern that receives sound from both the front and back; Also known as a 'Figure 8' pattern; More proximity effect that Cardioid or Hyper Cardioid; Often found in ribbon mics.






42. 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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43. The first dynamic microphone with changeable polar patterns.






44. The combination of the ribbon and magnet in a ribbon microphone.






45. 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.






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






47. 4 coincident mics each positioned at 90






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






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






50. Often look like handheld vocal mics; Talk or sing into the end of the microphone.