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Sunday, April 5, 2009

Fruity Loops Sound Synthesis - How To Use Filters

By Dan Hunt

The job of the filters is to get rid of part of the sound. Then the reduced part you end up with is entirely different to the whole portion that was started with. The foundation of the entire idea of subtractive synthesis is dependent on filters, which are one of the most essential segments of the creation of sound. All frequencies reach a cut-off, which's the primary filter control. There're various more recognise types of filters for example

A band on frequencies that're allowed to pass through the center is called a band pass. Whatsoever frequency outside of this band are stopped.

The low pass filter is the most popular. Any frequencies found below the cut-off point are permitted to pass through.

Frequency bands found in the center are not permitted to pass through because of the band notch reject.

The opposite of the low pass naturally is the high pass. This filter lets each of the frequencies above the cutoff point to pass.

The higher the attenuation slope number the more effective it is. The usual numbers are 6dB, 12dB, 18dB, and 24dB per octave. It is the increased steepness of all octave that makes this efficient. When you compare a higher pitch like 2000Hz, which's a higher octave, that 1000Hz. It shows that a 24dB filter is twice as efficient as a 12dB filter.

A 2 pole filter is not very effective in frequency reduction. Having a 4 pole filter creates a muted dull sound cause the increased number of poles attenuate the signal. The frequency is boosted by the resonance, which's other essential feature.

The set frequency increases by being boosted. By doing this the filter with produce it's personalized sine wave, implying it has self oscillated. Hence if you change the filter frequency, you could control the pitch.

Creating a filter sweep is simple by using an envelope or LFO This will give you some brilliant sounds. Resonance by itself is good giving a little more high-end sound. - 18423

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