Equalization and Signal Processing
Monitor speakers need their own equalization primarily to reduce or eliminate acoustic feedback. One of the main problems affecting monitors is acoustic feedback or "ringing". Acoustic feedback occurs when the time delay between the acoustic input of a microphone and the output of a monitor speaker is a multiple of the period of a frequency. When this occurs the acoustic output of the speaker is picked up by the microphone and amplified again by the monitor speaker. This is a positive feedback loop that reinforces the specific frequency causing the speaker to howl or squeal. Equalization is used to attenuate the specific frequency that is feeding back.
Read more about this topic: Stage Monitor System, Monitor Equipment
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