Preamp- A control used to boost an audio Signal's level. Microphones are plugged into preamps. The preamp knob is turned up to a useable and desired signal level. This level is generally sent to a recorder or a set of speakers.
Bleed- The amount of sound that bleeds into the source being recorded. Leakage
could be anything from room ambience to another instrument sound. This is common when a full-band performs together with all the instruments in the same room or stage.
Microphones with tighter pickup patterns provide less leakage from other sources and
the environment. A mic with a hypercardioid pickup pattern provides the best isolation and prevents the most bleed-over from other sounds.
Pop Filter- A nylon screen around a hoop or a perforated metal disk placed in front of the microphone in order to avoid plosive “b," “p," and “t" sounds that create destructive air movement. Pop filters are usually mounted on the mic stand with the mic or on a separate mic stand and are placed a few inches away from the mic. Frequency response refers to how well a particular mic is able to respond to all the frequencies that strike it. Cardioid patters are the most common. Their pickup pattern is heart-shaped. Cardioid mics are sometimes referred to as unidirectional. With a top address microphone...