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






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






3. Use coincident or near coincident pairings; Too many microphones will cause phasing issues.






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






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






6. 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.






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






8. Dutch broadcasting stereo mic technique; An X-Y type with the mics 30cm apart and at a 90






9. 4 coincident mics each positioned at 90






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






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






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






13. Sounds that arrive from angles other than the 0






14. Three or more microphones working together to capture a stereo or surround image of the sound source.






15. Omnidirectional: 0 - Cardioid: 8 - Supercardioid: 12 dB - Hypercardioid: 6 dB - Bidirectional: 0






16. To capture two perspectives on the same sound.






17. 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.






18. Sounds that arrive at the 0






19. Coincident pairing angled between 90






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






21. 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.






22. 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;






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






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






25. This is what is measured to produce an electrical signal in condenser mics; This changes as sound waves strike the diaphragm causing the distance to the back plate to change.






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






27. Captures sounds arriving 90






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






29. 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.






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






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






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






33. Used in adverse conditions to protect from elements like sand - or dust.






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






35. Changes in air pressure from the front or the back can cause polarity cancellation; Sides have good rejection; Natural polar pattern is bidirectional.






36. 1 Bidirectional & 1 Cardioid placed coincidentally; Bidirectional faces left and right and cardioid faces the sound; Gives control of the focus and size of the stereo image;






37. First microphone invented by Georg Neumann






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






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






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






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






42. 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.






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






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






45. Condenser; Cardioid; Side Address; 48V Required; Large Diaphragm; Manufactured by Rode; Widely recognised as the world's quietest studio microphone; Ideal for vocals - voiceover - and acoustic instruments.






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






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






48. Very robust and durable; Used in telephones until 1990's; Currently finds applications for military use.






49. 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.






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







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