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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. The outer covering of a microphone.






2. Cable wrapping method that keeps every coil on top of the next; May cause interference and tiny curls or tangles.






3. Method of creating low end effects from a bass drum by creating a tunnel at the mic end thus trapping sound and amplifying low end boost.






4. Vintage Tube Mics hold voltage after being unplugged; Be sure grounds are connected to power cord and that the charge has left microphone prior to striking.






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






6. Big + & - (More front with less opposite rear)






7. Microphone consisting of two parallel metal plates - each holding an opposing charge (+ or -) and thus creating a capacitor to induce an electrical charge as sound waves move the diaphragm; Require a solid- state or tube preamplifier.






8. To oppose with equal weight or force as in the length of the boom arm versus the weight of the microphone.






9. Device used to calibrate sound pressure measurement devices; Emits a single 1 kHz frequency over a sustained period of time.






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






11. A gradual - continuous decrease in low frequency response.






12. 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.






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






14. Characterized by a vacuum tube transducer; Heat rises so many are hung upside down to prevent heat from reaching the microphone head; Avoid jostling or shaking these fragile mics.






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






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






17. Tough & rugged microphone that contains an element consisting of a dome- shaped diaphragm and a moving 'voice coil'; Operates on principles of magnetic induction.






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






19. Solid State and Tube.






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






21. 4 coincident mics each positioned at 90






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






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






24. Captures sounds arriving 90






25. Occupying the same space and time.






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






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






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






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






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






31. Dynamic; Cardioid; End Address; Manufactured by Sennheiser; Unique mic clip with quick- release button; Large diaphragm dynamic element handles high SPL's - making it great for recording guitars and drums.






32. Allows all low frequencies to pass; Blocks the higher frequencies from being processed.






33. Another name for condenser microphone.






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






35. To capture two perspectives on the same sound.






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






37. Sounds that arrive at the 0






38. Allow sound to reach the rear of the capsule/diaphragm - to create cardioid - supercardioid - and hypercardioid patterns In single capsule pressure gradient microphones.






39. The first dynamic microphone with changeable polar patterns.






40. The graphic representation plot of the sensitivity of a microphone from any direction over a 360






41. Used by government agencies to determine safe sound exposure levels (in dB) over a period of time; 85 - 90 dB = 16 hrs. of safe exposure time at 85 dB; Decreases to 8 hrs. of safe exposure time at 90 dB.






42. Commonly found in acoustic guitar pickups; Ceramic piezoelectric material is used in hydrophones (underwater mics) because of durability.






43. Bell Labs scientist that was an innovator of many spaced pair and arrayed miking techniques.






44. 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.






45. Modeled to mimic a human head for extremely good spatialization; Shaped like a human head.






46. Sensitive in a slightly narrower pattern in the front than cardioid and has a small lobe at rear; Rejects most signals arriving from 125






47. Divisions on the fingerboard which represent the position of a specific note or tone.






48. 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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49. 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.






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