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






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






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






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






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






6. DC Voltage Req'd for capsule polarizing voltage and internal mic preamps; 3 sources: External Power Supply Unit (PSU); Phantom Power; Battery.






7. The lowest - and usually most intense - frequency of a complex sound; Most often perceived as the sound's basic pitch.






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






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






10. 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.






11. One of the oldest mics; Diaphragm mounted on & compresses cup of tiny granules of carbon (100 microns big) that increase current flow when compressed by sound waves and vary electrical current; Also called Resistance Mics;






12. Occupying the same space and time.






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






14. 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.






15. 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.






16. Commonly utilize large diaphragm dynamic mics.






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






18. Fixed plate that is charged with polarized voltage found in condenser mics; Usually constructed of milled brass; Has a number of holes drilled in it to provide damping for diaphragm.






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






20. Will yield a 6dB increase in output - but will cause a loss of high frequency response.






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






22. 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).






23. Polar pattern produced when you add a little bit of bidirectional to the omni pattern.






24. An electromagnetic microphone - in which a thin - corrugated ribbon is suspended within a high magnetic flux field; Excellent transient response due to the small amount of acoustic energy required to move diaphragm.






25. German broadcasting stereo mic technique; An X-Y type with the mics 20cm apart and at a 90






26. 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.






27. 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.






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






29. The outer covering of a microphone.






30. 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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31. 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.






32. The head or top of the guitar where the tuning pegs are located.






33. Coincident pairing that is at 90






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






35. Forward facing bipolar mics spaced 20cm apart.






36. The first dynamic microphone with changeable polar patterns.






37. Condenser; Cardioid/Hypercardioid; End Address; 48V Required; Manufactured by AKG; Can be powered by internal 9 V battery for field recording; Improves clarity of speech with the PB 1000 Presence Boost Adapter.






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






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






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






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






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






43. Quartz; Barium Titaniate - Tourmaline; Rochelle Salt - and even cane sugar.






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






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






46. 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.






47. 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.






48. Aluminum Ribbon - Bi-Polar (Figure 8); Side Address; Manufactured by Shiny Box; Buttery mid- range improves digital recordings and smooths out modern treble; Best on drums - piano - overheads - and vocals where treble is focused.






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






50. Solid State and Tube.