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Sunday, December 6, 2009

Sound Effects For Your Music Production

By Mickey Roukeayeal

Cutoff frequency / Cutoff point. At that point a filter becomes active and starts to affect the sound. This determines what part of the frequency spectrum the filter works on.

Attenuation. This reduces the target frequencies.

Level / Gain. It lets you cut ( attenuate ) or boost ( amplify ) a collection of frequencies.

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

The 5 different EQ types are :

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

Graphic EQ. The frequency ranges are fixed divided into a collection of bands to make cut and augment individually. Each row of sliders control a particular frequency band. They are common on howdy fi systems. It also stands alone studio devices and can be found in software. However, you can technically divide the spectrum into any amount of bands, everyday divisions on hardware units are 15 and 31 covering two-thirds and one in three of an octave ranges respectively.

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



Paragraphic EQ. This is a sort of super-parametic EQ. It blurs the line between graphic and parametric. It offers several bands like a graphic, but with user-definable frequency bands like a parametric ; as this may become quite complicated, they also tend 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 several mixers. Normally, you'll be able to find fixed high and low EQ with a sweepable mid range control. - 18762

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