| What are the three main types of microphones? |
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| Moving Coil (Dynamic), Ribbon, and Condenser/Capacitor. |
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| Microphones are ______ transducers. What are the two transductions? |
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| Microphones are double transducers. |
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| Moving Coil mics are what two types of mics? |
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| What does corrugated mean? |
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| What did Emile Burliner do? |
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| Invented mics and speakers. |
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| What theory does condenser/capacitor mics work off of? |
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| Condenser/Capacitor mics work off of the theory of capacitance. |
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| They amplify an electrical signal. |
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| What are modern tube condensers of today? |
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| Transistors (Still an electrical amplifier). |
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| Diaphragms are sprayed with _ _______ of ____? |
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| Diaphragms are sprayed with 3 microns of gold. |
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| What is a Discrete Circuit? |
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If 100dB was given and it heard 100dB, it’ll be at ___dB?
If 90dB was given and it heard 80dB, it’ll be at __dB |
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If 100dB was given and it heard 100dB, it’ll be at 0dB.
If 90dB was given and it heard 80dB, it’ll be at -10dB. |
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| What are the three basic pickup patterns? |
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Unidirectional (in front, one direction, cardioid, super, hyper).
Omnidirectional (all directions).
Bidirectional (Figure 8). |
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| How does the sound picked up from behind a super or hyper cardioid sound? |
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| What does the frequency response curve show? |
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| It shows linearity, efficiency & deficiency (more/less than), range of frequencies, and hyper sensitivity. |
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| What mic has the thinnest diaphragm? |
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| Condenser mics have the thinnest diaphragm. |
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| What is transient response? |
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| How quickly a mic’s diaphragm responds to a sound wave. |
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| List mics with the fastest, to mid, then to lowest transient response. |
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| Condenser (Fastest), Ribbon (Mid), and Moving Coil (slowest). |
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| The thinner the diaphragm, the ______ it reacts. Why? |
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| The thinner the diaphragm, the quicker it reacts because there’s less mass to move. More mass = less detail. |
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| What are the effects of a moving coil and ribbon mic on an edgy voice? |
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| Moving Coil (Good), Ribbon (Eh, it’d roll off too much). |
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| Ribbon mics are good for what? |
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| Go against something harsh and edgy, make it warm and mellow, good for ’30’s, ’40’s radio sound, bidirectional. |
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| What is sensitivity rating? |
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| Measurement of output level that a mic will produce in voltage (voltage measurement). |
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| List the voltage measurement from the highest to lowest for the three main types of mics. |
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| Condenser (Hottest), Moving Coil (Mid), Ribbon (Lowest). |
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| Explain equivalent noise rating. |
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What is rumble?
How do you reduce rumble? |
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| Low frequency vibrations that bleeds into the mic from the floor.
Bass Rolloff / Hi Pass Filter, shock mount, and floating floors get rid of rumble. |
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Explain proximity effect.
How do you remedy proximity effect? |
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When a cardioid mic is too close to a sound source, the bass takes over the mids and trebles.
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Bass Rolloff, change pickup pattern from cardioid to omni, or moving the mic back remedy proximity effect. |
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What are plosives?
How does one get rid of plosives? |
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| Popping of P’s & B’s.
Pop Filters reduce plosives. |
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What is sibilance?
How does one get rid of sibilance? |
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| S’s, Ch’s, and Z’s.
DeEsser (plugin), a pop filters, and a low pass filter reduce sibilance. |
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| What is overload distortion? |
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| When the DBSPL is too much for the mic to handle (then use pad). |
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| Resistance on an electrical circuit (match ohms of mic and preamp). |
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| Explain the difference between a balanced line and an unbalanced line. |
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| Balanced Line – 3 wires carry an audio signal, hot (+), cold (-), and ground (they’re quieter and can travel longer).
Unbalanced Line – 2 wires carry an audio signal, hot (+), and cold (-). |
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| Boosts a weak mic signal to a line signal. |
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| What are the two basic mic placing techniques? |
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