MUS TECH EQ

equalizer (EQ)

effects processor

What does an equalizer do to frequencies?

boost (amplify) or cut (attenuate) them

EQ is a tool for what?

coloring/shaping

ways to “EQ” before using an EQ

• acoustic treatment

• mic tech/placement

• mic selection

• cables

• pre amp

• source placement

• source selection

“true” filter

behavior

• how it shapes

high pass filter

• hpf / hp

• low cut

• any low frequency (i.e. 75 Hz, 100 Hz, etc)

What switch should an engineer consider using on a vocal track?

Hpf because no one is singing that low

HPF on mic and interface, which one do you use?

depends on which one sounds good

low pass filter

• LPF ; LP

• high cut

• any high frequency

band stop filter

“notch filter”

band pass filter

• HPF + LPF

• cut only; to infinity

EQ

• types (options)

• can be shelving or peaking (bell)

low shelf

high shelf

peaking (bell)

• has a central frequency

3dB rule

3dB of change determines the designated frequency of an EQ/ filter

3 main types of EQ’s

• graphic

• semiparametric

• (fully) parametric

graphic EQ

• 1 parameter —> gain; amplitude

• can be multiples “bands”

semi-parametric

• 2 parameters

  • amplitude

  • frequency

fully parametric

• 3 parameters

  • amplitude

  • frequency

  • bandwidth or Q

cutting

• removes noise

• makes space

boost

• add noise/ gain

• trying to cover up what you don’t like