Sunday, March 22, 2009

Learn The Secrets Of Analog and Digital Synths

By Greg Hoffman

The original sound that you hear in the patches is made by the oscillators, and is then fed through the synthesizers signal path. If you set oscillation to a genuinely low pitch, you would end up with gaps because the waveform is endlessly dependent on the speed pitch of the note. And so the different sounds are produced by the shape of the wave form, which is the product of oscillation.

Here're the standard wave form. For a sharp biting type sound, you need the saw wave. Its named as this because its shape is identical to those on a saw blade

To obtain a soft mild tone then you would want the Sine Wave, which's shaped like a horizontal S; it has a smooth up and down shape to it.

A specified colour of noise will produce noise even though it is not truly a wave-form

To get that sound that simulates a hollow reed you need the square-wave. This's distinguishable by its near perfect square out-look.

A variance to the square-wave is the pulse wave, even though it's merely half as wide. It has the amusing ability to have a modulated width. Maybe you have heard this as being related to as the Pulse Width Modulation.

To find a happy medium between the saw and sine-wave you will need the triangle wave, which peculiarly enough is shaped like a triangle.

Most frequently a synthesizer has two to three oscillators. Being as that is the case, you can do various amusing stuff by mixing the wave forms together. Plus you could tune them so they are different from one another. It can be tuned in semi-tones, octaves or in cents. A swirling untuned sound is created by many oscillators which're cents apart from one another. Cents is a hundredth of a semitone.

There's an oscillator known as a low frequency oscillator. Its frequencies are undetectable unless you physically tune it into a average hearing range. Its job is to tone the pitch of the oscillator or the filter frequency. The start stop of the waveform is rather evident because the LFOs are like the oscillators in that they all the same use basic waveforms. When applied decently for instance the sine wave permits you to hear an increasing or decreasing sound of the wave shape. Animation and moving texture will be the end result for your synthesiser sound if complete decently.

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