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Monday, April 6, 2009

A Beginner's Guide To Synthesizers and Synths - Music

By Norman Reyes

The basic sound that you hear in the patches is created by the oscillators, and is then fed through the synthesiser signal path. Say you set oscillation to a truly low pitch, you'll end up with gaps because the wave form is continuously dependent on the speed pitch of the note. Thus the different sounds are created by the shape of the wave form, which is the product of oscillation.

There're some standard oscillator wave forms. For a sharp biting type sound, you need the saw wave. It's named as this because its shape is like those on a saw blade

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

A particular colour of noise would produce noise although its not actually a wave-form

To get that sound that simulates a hollow reed you require the square-wave. This's distinguishable by it's virtually perfect square appearance.

A variance to the square-wave is the pulse wave, although it is just half as wide. It has the amusing ability to have a modulated width. Perhaps you have heard this as being mentioned to as the Pulse Width Modulation.

To find a glad medium between the saw and sine wave you would require the triangle wave, which's the shape of a triangle.

Most frequently a synthesiser has two to three oscillators. Being as that's the case, you could do numerous entertaining stuff by combining the wave forms as one. And you could tune them so theyre different from each other. It can be tuned in semi-tones, octaves or in cents. A swirling untuned sound is created by many oscillators which are cents apart from each other. Cents is a 100th of a semi-tone.

There is an oscillator known as a low frequency oscillator. Its frequencies are undetectable provided you physically tune it into a regular hearing range. It's job is to modulate the pitch of the oscillator or the filter frequency. The start stop of the waveform is quite evident because the LFOs are like the oscillators in that they still use general wave forms. When utilised the right way for instance the sine-wave allows 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 done properly. - 18780

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