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. Cable wrapping method that keeps every coil on top of the next; May cause interference and tiny curls or tangles.






2. 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.






3. 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.






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






5. Shure's ribbon microphone that utilizes Roswellite to prevent ribbon damage.






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






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






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






9. Condenser; Cardioid; Side Address; 48V Required; Large Diaphragm; Manufactured by AudioTechnica; Transformerless circuitry virtually eliminates low- frequency distortion.






10. 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






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






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






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






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






15. Tough & rugged microphone that contains an element consisting of a dome- shaped diaphragm and a moving 'voice coil'; Operates on principles of magnetic induction.






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






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






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






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






20. Vintage Tube Mics hold voltage after being unplugged; Be sure grounds are connected to power cord and that the charge has left microphone prior to striking.






21. 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.






22. To break down or disassemble any portion of a set or stage set- up.






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






24. A gradual - continuous decrease in low frequency response.






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






26. An electromagnetic microphone - in which a thin - corrugated ribbon is suspended within a high magnetic flux field; Excellent transient response due to the small amount of acoustic energy required to move diaphragm.






27. Commonly utilize large diaphragm dynamic mics.






28. Pure polar pattern that receives sound from both the front and back; Also known as a 'Figure 8' pattern; More proximity effect that Cardioid or Hyper Cardioid; Often found in ribbon mics.






29. To capture two perspectives on the same sound.






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






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






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






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






34. More compelling sound - giving both depth and perspective.






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






36. 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.






37. Another name for condenser microphone.






38. 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.






39. Extremely narrow area of sensitivity in front with extended reach; Also has multiple lobes which vary in position with frequency; Not made from combining pure patterns - but created by using an interference tube.






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






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






42. Condenser; Cardioid/Hypercardioid; End Address; 48V Required; Manufactured by AKG; Can be powered by internal 9 V battery for field recording; Improves clarity of speech with the PB 1000 Presence Boost Adapter.






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






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






45. The first dynamic microphone with changeable polar patterns.






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






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






48. Works exactly like condenser mic but one of the two plates is manufactured as a capsule with a permanent static charge so there is no external power source necessary; Requires phantom or battery to charge internal mic preamp.






49. 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.






50. The reduction in the amplitude of a wave due to the dissipation of wave energy.