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






2. 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.






3. Radio Frequency Interference






4. Omnidirectional: N/ - Cardioid: 180






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






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






7. Raises the body of the microphone increasing height.






8. DC Voltage Req'd for capsule polarizing voltage and internal mic preamps; 3 sources: External Power Supply Unit (PSU); Phantom Power; Battery.






9. Polar pattern produced when you add a little bit of bidirectional to the omni pattern.






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






11. Moving a conductor (a coil of wire) through a magnetic field will cause a voltage to be induced across the conductor.


12. Sounds that may be broadcast over the radio or internet.






13. 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






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






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






16. Often look like handheld vocal mics; Talk or sing into the end of the microphone.






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






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






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






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






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






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






23. 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'.






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






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






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






27. An instrument for detecting sound transmitted through water commonly manufactured using ceramic piezoelectric material.






28. Captures sounds arriving 90






29. Device used to calibrate sound pressure measurement devices; Emits a single 1 kHz frequency over a sustained period of time.






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






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






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






33. 4 coincident mics each positioned at 90






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






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






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






37. Condenser; Cardioid; Side Address; 48V Required; Manufactured by AudioTechnica; Ideal for project/home- studio applications; Low price; Remains the low cost performance standard in side- address condenser mics.






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






39. 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.






40. First microphone invented by Georg Neumann






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






42. 4800 ft/sec






43. 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.






44. 4 to 6 ft. from the player; Mic should be placed below the line of sight of the bell - rotated at about 40 degrees off- axis - and tilted upward.






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






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






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






48. Shows the max sound pressure level possible with a certain amount of distortion; Measured in dB (decibels).






49. Mounts on a single stand to provide for adjustable spacing and angling between mics.






50. 12V DC; 24V DC; 48V DC