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19 True/False questions

  1. speaker unitThe combination of two or more speaker units in an audio sound system to reproduce the original sound picture.

          

  2. CapacitorA passive device that stores a small electric charge.

          

  3. Phantom PowerA crystalline material (usually made of germanium). It is a non-linear amplifying element used in almost all audio circuitry today. Great effort must be made to reduce distortion introduced by these devices in order to make their output linear, or like the original signal, only louder.

          

  4. InputThe signal entering an electronic component.

          

  5. OutputThe signal leaving an electronic component.

          

  6. Air Suspension SpeakerRefers to the cabinet in which a speaker is mounted. An airtight, sealed box, that is responsible for returning the speaker cone to its neutral position using the air pressure contained within the cabinet. These are sometimes called "acoustic suspension speakers."

          

  7. transistorA crystalline material (usually made of germanium). It is a non-linear amplifying element used in almost all audio circuitry today. Great effort must be made to reduce distortion introduced by these devices in order to make their output linear, or like the original signal, only louder.

          

  8. Cable(speaker) A light material forced into motion representative of sound waves, causing changes in air pressure analogous to those sound waves.

          

  9. Crystal microphonesTransducers of mechanical energy into electrical energy by the use of crystal salts or ceramics (piezoelectric material) that, when their shape is distorted by changes in air pressure on a diaphragm, produce minute voltages.

          

  10. Condenser MicrophonesTransducers of mechanical energy into electrical energy by the use of crystal salts or ceramics (piezoelectric material) that, when their shape is distorted by changes in air pressure on a diaphragm, produce minute voltages.

          

  11. Polar PatternThe shape of the area in space to which a microphone is sensitive.

          

  12. ElectretThese devices carry a permanent static electric charge.

          

  13. gainMultiple wires, each insulated from the other, that run in tandem with each other. The wires twist around each other to help cancel noise.

          

  14. ConeMultiple wires, each insulated from the other, that run in tandem with each other. The wires twist around each other to help cancel noise.

          

  15. cross-over networksTransducers of mechanical energy into electrical energy by the use of crystal salts or ceramics (piezoelectric material) that, when their shape is distorted by changes in air pressure on a diaphragm, produce minute voltages.

          

  16. Shielded cableMultiple wires, each insulated from the other, that run in tandem with each other. The wires twist around each other to help cancel noise.

          

  17. bass reflex speakerRefers to the cabinet in which a speaker is mounted. An airtight, sealed box, that is responsible for returning the speaker cone to its neutral position using the air pressure contained within the cabinet. These are sometimes called "acoustic suspension speakers."

          

  18. speaker systemThe combination of two or more speaker units in an audio sound system to reproduce the original sound picture.

          

  19. Dynamic MicrophonesTransducers using a coil of wire moving through a magnetic field to transduce mechanical energy into electrical energy.