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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. Condenser; Multiple; Side Address; 48V Required; Manufactured by AKG; Dual Diaphragm; Nine selectable pickup patterns; Peak Hold LED; The reference microphone for almost all comparative microphone tests.






2. Used to make sure you have accurate angles & capsule spacing when miking in stereo.






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






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






5. 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.






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






7. Filters only the bandwidth of frequencies that are supposed to (or allowed) to pass through; High and Low Pass are examples.






8. - Omnidirectional: 1 - Cardioid: 1.7 - Supercardioid: 1.9 - Hypercardioid: 2 - Bidirectional: 1.7






9. 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.






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






11. An electrical device characterized by its capacity to store an electric charge;






12. The world's first single element cardioid mics.






13. Tube with ports down the side with the mic capsule at the bottom; Sounds entering the tube from on - axis interact inside the tube with the sounds coming in through the side ports - an interfere with each other in such a way as to partially cancel of






14. Timing difference between two waves; Waves interfere cancelling each other out and altering frequency response; Measured in degrees; Can be caused by reflections of sound waves; Can be reduced by putting cabinet or amp at an angle.






15. Close mic placement can help guard again bleed from other instruments and takes advantage of proximity effect; Center of cone = Brighter; Outside of cone = Darker; Reflections can create phase issues (can be reduced by putting the cabinet at an angle






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






17. Raises the body of the microphone increasing height.






18. The arm of the mic stand; Includes the angle adjust & telescopic adjust.






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






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






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






22. Condenser; Cardioid; End Address; Manufactured by Shure; Small condenser design that is great for instrument recording.






23. 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.






24. Radio Frequency Interference






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






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






27. Carbon; Ceramic/Crystal; Magnetic/Dynamic; Ribbon; Condenser






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






29. - Omnidirectional: 100% - Cardioid: 33% - Supercardioid: 27% - Hypercardioid: 25% - Bidirectional: 33%






30. When using multiple microphones - the distance between microphones should be at least 3 times the distance from each microphone to its intended sound source.






31. 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.






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






33. The first AKG dynamic microphone.






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






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






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






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






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






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






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






41. Commonly utilize large diaphragm dynamic mics.






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






43. Mics in which sound waves vibrate a piezoelectric crystal that generates a varying voltage.






44. Magnetic field opposite to that which presently exists; Do this on the bottom mic when miking a snare with two mics.






45. 2 - 4 ft. from player; Placed below the line of sight of the bell - rotated at about 30 degrees off axis - and tilted upward.






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






47. 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).






48. 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






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






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






Can you answer 50 questions in 15 minutes?



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