What Is Equalization?
If you ask 10 audio practitioners this simple question, you're likely to get 10 different answers...
By Pat Brown • November 1, 2018As I was preparing a recent OptEQ workshop, a few things crystallized for me, the most fundamental being “what is equalization?” If you ask 10 audio practitioners this simple question, you’re likely to get 10 different answers.
In the most literal sense, equalization means to “make equal.” But make what equal? Here are some thoughts for consideration.
Literal Definition
In the strictest use of the term, equalization applies to the correction of minimum phase aberrations in the transfer function of a device (usually electro-acoustic) using minimum phase filters. This could be called “corrective” equalization, because the anomaly is removed, as though it never existed.
This is an “audio world” definition. Unfortunately, we don’t have exclusive rights to the term. Even so, some practitioners want to limit the term “equalization” to this use of filters only...
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