Three Fundamental Characteristics of An Equalizer (1)

The Music Telegraph | Text 2019/06/12 [13:47]

Three Fundamental Characteristics of An Equalizer (1)

The Music Telegraph| 입력 : 2019/06/12 [13:47]

▲ Pro Tools EQ

 

 

 

Three Fundamental Characteristics of An Equalizer (1)

 

Every instrument has its own "sound" called "tone" or "timbre". It can be thought of as the color of a sound. It is the energy arrangement of the harmonics of an instrument that give it its color and this is determined by how the instrument is designed and played. A trumpet sounding the note "A" sounds nothing like a guitar playing the same note at the same volume because their timbres (harmonics) and envelopes are different. An equalizer is a device that can alter the harmonic content and hence the tone or timbre of a sound.

 

The Three fundamental characteristics of an equalizer are:

 

1) The frequency that is being boosted or cut (called the center frequency, fc, described in Hz)

 

2) The amount of boost or cut at the center frequency (called gain + or -, measured in dB)

 

3) The amount of frequencies on either side of the center frequency that are being affected (known as bandwidth or Q).

Q is the ratio of the frequencies affected (bandwidth) divided by the center frequency. The smaller the Q number, e.g. 0.5, the larger the EQ range affected, the larger the Q number, e.g. 3, the samller the EQ range affected. Understanding the meaning of Q can be confusing as it is a ratio of two numbers and hence has no units.

 

 

 

 

 

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