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. The combination of the ribbon and magnet in a ribbon microphone.






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






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






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






5. EMI employee that was the innovator of many coincident pairing mic techniques; Mid/Side & Blumlein techniques are associated with him.






6. Small coil of wire wrapped around the plastic or aluminum diaphragm of a dynamic microphone.






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






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






9. 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.






10. Never store mic in a damp place; Keep dirt & dust away from the mic; Never 'pop' test the mic; Check if a mic is working by lightly scratching the grill.






11. + & - (Front & rear in opposite equal amounts)






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






13. 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.






14. Raises the body of the microphone increasing height.






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






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






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






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






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






20. The outer covering of a microphone.






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






22. When using two microphones reverse the polarity of the bottom mic.






23. Most sensitive to sounds arriving from the front while rejecting sounds from rear; Shaped like a heart; Rejects most signals from 180






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






25. 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.






26. 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.






27. First microphone invented by Georg Neumann






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






29. Shows the level of self- noise from a microphone's internal electronics; Measured in dB (decibels).






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






31. 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.






32. Verify that the boom is placed over a microphone leg prior to use to provide added balance and stability.






33. Pair of omni mic separated by a circular absorptive baffle.






34. Small microphone attached to the bridge of a string bass or to an acoustic guitar to amplify its sound.






35. Solid State and Tube.






36. Shows the total range of the mic's internal pre- amp; Measured in dB (decibels).






37. Electro- acoustic device attached to a transducer that vibrates to receive or produce sound waves which put the device into motion.






38. Dynamic; Cardioid; End Address; Manufactured by Shure; Popular musicians' choice due to its sturdy construction and ability to work well with instruments that produce high sound pressure levels.






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






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






41. Coincident pairing angled between 90






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






43. Occupying the same space and time.






44. 12V DC; 24V DC; 48V DC






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






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






47. 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.






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. Modern drummer who has created a large kit and innovated several ways of capturing the sound from his massive kit.






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