Test your basic knowledge |

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






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






3. Coincident pairing angled between 90






4. Using omnidirectional as a reference of 1 - this is a measurement of how much farther you can be from a mic to achieve equal output level in other polar pattern microphones.






5. Solid State and Tube.






6. Consumers can listen to live broadcasts over telephone lines; Individual one- way experience that required a subscription service to listen to performances.






7. Tube manufactured for the new version of the AKG C12 (called the C12-A); Powered by Norelco.






8. Condenser; Cardioid; End Address; 48V Required; Manufactured by AudioTechnica; Switchable 80 Hz Hi-Pass Filter; Ideal for professional recording and critical applications in broadcast.






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






10. A 3- mic array using omni mics with left - right and center placement; Center is placed about 5 ft. closer to the source to eliminate 'holes' in the middle and the center levels are reduced for an even sound; Forms a triangle.






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






12. First microphone invented by Georg Neumann






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






14. Occupying the same space and time.






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






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






17. When miking an amp placing it near the center of this will make it sound brighter; Miking near the outer edge of this will make it sound darker and more mellow in tone.






18. Keep in proper case; Never disassemble shockmounts






19. The attachment that holds a microphone in place on the mic stand; Comes in various shapes - sizes - and applications.






20. A stereo miking technique similar to coincident pair - where the mics are set up with some distance between them; Distance and angle of microphones may differ; Creates a more defined stereo image; Produces very sharp images; Provides more 'air'.






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






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






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






24. Rotating speaker cabinet design featuring separate treble and bass drivers that can switch speeds; Speaker rotate from front to back creating a Doppler effect; Resulted in new spatial perception for each note. Stereo miked up top and single miked at






25. 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.






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






27. Cable wrapping method that reduces interference and makes it easier to unravel the cable.






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






29. Used in production sound for multiple perspectives on the set; Used in Audio Post to record a number of mics into a recorder with minimal set- up & tear down.






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






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






32. 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.






33. Sounds that arrive from angles other than the 0






34. Measurement of Sound Pressure; stated as being N/m2 with a Newton being a measurement of force equal to about 9.8 lbs; Equal to 94dB SPL






35. Bioacoustic Research; Documentary Journalism; Radio; Film/TV Production; Audio Post Production.






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






37. 12V DC; 24V DC; 48V DC






38. Raises the body of the microphone increasing height.






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






40. Delicate and require extreme care; NO PHANTOM POWER; Becoming more popular than ever because of highly efficient magnets - lower manufacturing costs - and great fidelity.






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






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






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






44. 2 - 4 ft. from player; Placed below the line of sight of the bell - rotated at about 30 degrees off axis - and tilted upward.






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






46. Overall measurement close to the overall sound level in frequency response charts.






47. The first dynamic microphone with changeable polar patterns.






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






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






50. Basket/grille made out of a specific type of copper wire to block protect the mic from physical damage and to protect the mic from stray RFI