EQUALISATION

EQUALISATION

Terminology

• ATTENUATE: to reduce the signal level.

• PEAKING FILTER: a filter which boosts a specific band of frequencies.

• BAND: a single filter within an equaliser.

• BANDWIDTH: a measure of the width of the frequency range altered by a peaking filter.

• BOOST: to increase a signal's level using a filter.

• CENTRE FREQUENCY: the frequency at which a peaking filter applies maximum gain.

• CUT: to reduce a signal's level using a filter.

• CUTOFF FREQUENCY: the frequency at which a high-pass or low-pass filter has attenuated the signal by 3dB.

• EQUALISER: audio processor which uses a combination of different filters to alter the balance of frequencies in an audio signal.

• FILTER: a circuit which alters the level of a limited range of frequencies.

• FILTER SLOPE: the gain change per octave of a high-pass or low-pass filter.

• GAIN: the amount by which a filter circuit alters a signal. Can be positive ('boost') or negative ('cut' or 'attenuation').

• GRAPHIC EQUALISER: an equaliser which uses a large number of regularly spaced, fixed-frequency filters, each with an individual gain fader.

• HEADROOM: a measure of the maximum signal level that a given equaliser's circuitry can handle.

• HIGH PASS FILTER: a filter which progressively attenuates frequencies below a certain frequency.

• LOW PASS FILTER (LPF): a filter which progressively attenuates frequencies above a certain frequency.

• OCTAVE: a doubling of the frequency.

• PARAMETRIC EQUALISER: an equaliser with at least one swept peaking filter with bandwidth control.

• Q VALUE: a measure of the width of the frequency range altered by a peaking filter.

• RESONANCE: another term for Q value.

• SEMIPARAMETRIC EQUALISER: an equaliser with at least one swept peaking filter.

• SHELVING FILTER: a filter designed to alter the level of all signals beyond a certain frequency by a user-definable amount.

• SWEPT FILTER: any filter which allows the user control over its characteristic frequency.

• THIRD-OCTAVE: a regular spacing of the filters in a graphic equaliser, where one filter occurs every third of an octave.

 

Bandwidth Q Quality

Frequency

Filter

Hertz

Wave Length

Pitch-

Gain

Guitar/Vocals

Fundamental Frequency 200Hz

Notes 
Good to remember when you come to Eqing the vocals to take around 200Hz  out of the mix. Or find the resonance frequency of the vocal and Eq space out of the mix to add space and make the vocals stand out and be clear.

Notes

Mixing with reverb- Eq to take the heaviness out of the track!!! 
This is something I would always forget in my mixes. I have mixed my Lacuna Water track like this to experiment with tight Eqing. 

Space in the Mix

1. EQ

2 PAN

3.Level

Attenuation -refers to the reduction of a signal level, either by manually adjusting gain (with a variable or fixed resistor), or by use of a digital plug-in to reduce gain for you. Attenuation can also refer to using a pad (or "attenuator") on a hot audio signal as to not overload the input stage of a mixer or recorder.

Lulu's notes 
I feel it's good to go over  the terminology of Eqing and refresh the mind about space and Eqing and how you need to be brutal about your mix to make it clears and not muddy.