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






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






3. Often look like large diaphragm studio mics; Talk or sing into the side of the microphone.






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






5. 12V DC; 24V DC; 48V DC






6. Occupying the same space and time.






7. 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.






8. The first cardioid pattern dynamic microphone.






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






10. Dynamic; Cardioid; End Address; Manufactured by Sennheiser; Very small and compact; Especially suitable for use with drums and brass instruments; Includes a clip to mount directly on drums.






11. 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






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






13. 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'.






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






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






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






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






18. 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.






19. 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






20. 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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21. Shure's newer ribbon studio mics; KSM 353 & 313 (Roswellite); KSM 44 - 32 - & 27.






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






23. Omnidirectional: 360






24. Coincident pairing that is at 90






25. 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.






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






27. Sensitive in a narrower pattern in the front than a cardioid and has a prominent/pronounced lobe at rear; Rejects most signals from 110






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






29. The moving plate of a condenser capacitor; Constructed of a thin piece of metal or thin plastic - such as Mylar - coated with gold or nickel; .05 - 10 microns thick.






30. A flat or roughly flat strip on the neck of a stringed instrument against which the strings are pressed to shorten the vibrating length and produce notes of higher pitches.






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






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






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






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






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






36. Commonly utilize large diaphragm dynamic mics.






37. 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;






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






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






40. Considered to be the best mic ever made; VF14 Tube.






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






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






43. The method by which microphones are classified.






44. Used to filter heating current in certain mics; Invented by Georg Neumann.






45. Captures sounds arriving 90






46. First microphone invented by Georg Neumann






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






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






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






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