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Monday, March 30, 2009

How To Make Music With Digital Synthesis - Synths

By Dan Shaw

It is fun to play around with the ordinary approaches as well as the Fm synthesis, but there's much more that can be done with sound synthesis.

There're limits as to what could be easily performed with the latest methods of synthesis basically due to the fact that they're computer-based. The whole concept of digital synthesis is based on trying to duplicate acoustic and also analogue sounds. There is constantly different ideas and techniques being used, and the success is set on how correct is the audible reproduction.

4 fundamental methods are recommended.

Method 1 : Frequency Domain - Spectral Modeling Say we took the Hartmann Neuron synthesizer as an example, you would find it being a spectral model. Its well utilised in additive synthesis and also re-synthesis. This's relating to the frequency domain.

Method two : Physical Modeling Physical sounds such as spring simulations and also mass simulations can be very tightly reproduced by physical modeling. This is because this kind of modeling counts on mathematical models derived from the acoustical basis of instruments and components. If you really want to achieve those plucked sounds, then this is achieved from the Karplus Strong synthesis, via physical modeling.

Method 3 : No Model Sound Attempt This is also address as loose modeling. This's the method to be utilized to AM, Walsh, FM along with Wavetable synthesis.

Method four : Time Domain For granular synthesis, waveform composition and also wave-set distortion you would want to use time based modeling.

Walsh synthesis is capable of making new wave forms by utilizing alot of square wave forms, plus it's entirely digital. There's one problem with this technique though, and thats the difficulty with being able to adjust the frequency spectrum. For a non complete digital or analogue, you might want to try Digital FM synthesis. In respect to complicated modulation, it is way more adjustable.

Some try to utilise LFO-type modulation or Yamahass operator concept. For instance this is what FM synthesis is set on. However, it does not achieve huge success with trying to be like analogue subtractive synthesis. The PPG Wave and Waldorfs Microwave series can take the credit for making Wave table synthesis so well-known. Fragmented pieces of sampled sounds are simply played back and looped just like a sampler. To make this yet less tricky, you could take advantage of filters, envelopes and LFOs which are all the standard features.

Please remember that the 4 methods we noted are capable of using analogue components. Yet they're still digitally-based. - 18423

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