Learn The Secrets Of Analog and Digital Synths

March 22, 2009

By Greg Hoffman

The basic sound that you hear in the patches is created by the oscillators, and is then fed through the synthesizers signal path. If you set oscillation to a really low pitch, you will end up with gaps because the wave form is unceasingly dependent on the speed pitch of the note. So the different sounds are produced by the shape of the waveform, which is the product of oscillation.

Here are the general waveform. For a sharp biting type sound, you need the saw wave. It's also known as this because its shape is similar 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 unique color of noise would produce noise although its not really a waveform

To get that sound that simulates a hollow reed you need the square wave. This is distinguishable by its nearly perfect square appearance.

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 glad medium between the saw wave and sine wave you would need the triangle-wave, which's the shape of 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 recognise as a low frequency oscillator. Its frequencies are undetectable provided you physically tune it into a regular hearing range. Its job is to tone the pitch of the oscillator or the filter frequency. The start stop of the wave form is rather noticeable because the LFOs are like the oscillators in that they still use average wave forms. When utilized in good order for illustration the sine-wave permits you to hear an increasing or decreasing sound of the wave-shape. Animation and moving texture would be the end result for your synthesiser sound if complete properly.

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