Sound Effects For Your Music Production

Cutoff frequency / Cutoff point. At about that point a filter comes into action and starts to affect the sound. This decides what part of the frequency range the filter works on.

Attenuation. This decreases the target frequencies.

Level / Gain. It enables you to cut ( attenuate ) or boost ( amplify ) a group of frequencies.

Bandwidth / Q / Resonance / emphasis / peak. The filter effects the range of frequencies either side of the cutoff point and measured in Hertz, so it is linked to frequency. However , it might be more useful if it was measured in octaves.

The five different EQ types are :

Fixed EQ. This is typically a single control like Treble or Bass. A mixer might have Low ( bass ) and High ( treble ) EQ controls. The cutoff frequency here is fixed and you control the amount of cut or boost.

Graphic EQ. The frequency ranges are fixed split into a series of bands to make cut and augment individually. Each row of sliders control a specific frequency band. They are common on hello fi systems. It also stands alone studio devices and can be found in software. However, you can technically divide the spectrum into any number of bands, typical divisions on hardware units are fifteen and 31 covering two thirds and 1/3 of an octave ranges respectively.

Parametric EQ. With parametric EQ you change the frequency of the bands. It has often three or 4 bands, each with three controls – cutoff frequency, bandwidth and level, allowing you to use specific frequencies within a particularly tight range.

Paragraphic EQ. This is a kind of super-parametic EQ. It blurs the line between graphic and parametric. It offers many bands like a graphic, but with user-definable frequency bands like a parametric ; as this may become quite complex, they also have a tendency to have highly-graphic interfaces to watch exactly what frequencies are being influenced.

Sweeping / Semi-parametric EQ. This is the middle between a fixed EQ and a full parametric EQ – while the bandwidth is fixed, you can control the centre frequency ( the cutoff point ). It’s common to many mixers. Typically, you’ll be able to find fixed high and low EQ with a sweepable mid range control.

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