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Microphones 1

QuestionAnswer
Microphones are transducers: True or False? True
What are the 2 types of microphones? Dynamic and Condenser
Dynamic Microphones use ________ induction to generate an output signal electromagnetic induction
What are the two types of dynamic microphones? moving coil and ribbon
Condenser microphones use the ________ principle electroSTATIC
Dynamic Microphones are less _________ than Condenser microphones sensitive
Dynamic Microphones are more _______ than condenser microphones durable
Which Mics are cheaper, dynamic or condenser? dynamic
Which mics do you need phantom power for? Condenser
Condenser microphones have a greater ______ and ______ response frequency, transient
In a Dynamic Mic, when a magnet moves past a wire, the magnet... induces current to flow in the wire
Then, the diaphragm moves either magnet or coil when... sound waves hit the diaphragm, and movement makes a small current
In dynamic microphones, amplitude is dependent on strength of the magnet and turns in the wire
In dynamic microphones, frequency is controlled by speed of the magnet or coil
what is the equation involved with dynamic microphones E=BLV
E= voltage
B= fluxivity of magnet
L= length of the coil
V= velocity
The ribbon mic uses a thin metal ribbon placed between the poles of a magnet, and... generate voltages by electromagnetic induction
Ribbon Mics: work by suspending a _____ ____ ___ in a magnetic feild thin metal foil ribbon
Ribbon mics have open air on 2 sides
Ribbon Mics: sound from front and back will activate the ribbon, but... sound from the sides will not
Ribbon mics are ________ (figure 8 pattern) bi-directional
In ribbon mics, frequency response is limited by ______ _______ _______ fundamental resonance frequency
How is the upper limit set in ribbon mics? by dimensions around magnetic structure
Ribbons often have ___ output and need a step up _____ to increase the voltage low, transformer
Capacitor Mics work on _____ microphones electrostatic
The diaphragm in Capacitor mics is one side of a ____ capacitor
A capacitor holds... an electrical charge
The diaphragm of capacitor mics moves with sound waves
Electret mics (type of capacitor mic) have permanent... electrical charge
Electret mics do not need ____ to _____ the capacitor, but need power to run the amplifier (usually a battery) power, polarize
Created by: sinatrablue
 

 



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