Chapter 3 EQ

Question 1

Band-

Answer 1

A range of frequencies.

Question 2

Bass

Answer 2

Bass sounds are low frequency sounds (usually 250 Hz or lower). Bass is also the usual designation for the lowest band of a shelving EQ unit which affects bass-range frequencies.

Question 3

EQ-

Answer 3

An abbreviation for Equalization.

Question 4

Equalization-

Answer 4

The process of attenuating or amplifying specific ranges of audible frequencies (bands). An EQ unit uses filters to enact this change. By boosting or cutting the amplitude of various bands of the audible spectrum, it is possible to change the tone of a signal. One mundane example of equalization are the tone controls (treble and bass) found on all modern car stereo systems.

Question 5

Graphic EQ

Answer 5

A type of equalization which allows the user to boost or cut various preset bands of frequen- cies using small faders which are arranged in a parallel fashion. Each fader controls a filter which amplifies or attenuates a particular band. Graphic EQ typically allows control over 5-9 bands, but larger units feature between 21 and 40 bands. Graphic EQ is sometimes found on larger home stereo tuners.

Question 6

Hi

Answer 6

A designation given to a shelving equalizer’s highest band. This is another name for the treble control. Professional gear tends to use the label ‘hi’ rather than ‘treble,’ which is usually found only on consumer electronics.

Question 7

Lo

Answer 7

A designation given to a shelving equalizer’s lowest band. This is another name for the bass control. Professional gear tends to use the label ‘Lo’ rather than ‘bass,’ which is usually found only on consumer electronics.

Question 8

Mid

Answer 8

A designation given to a shelving equalizer’s middle band. This band usually centers around 700 Hz to 2.5 kHz depending upon the manufacturer.

Question 9

Shelving EQ

Answer 9

A type of equalization which allows the user to boost or cut various preset bands of frequen- cies using knobs. Although very similar in function to graphic EQ, shelving EQ typically provides fewer bands than graphic EQ. Shelving EQ usually provides only three bands at most: (Hi, Mid and Low).

Question 10

Treble

Answer 10

Treble sounds are high frequency sounds (usually 8 kHz or higher). Treble is also the usual desig- nation for the highest band of a shelving EQ unit.