Author Topic: Synthesizers - Parameters and Classification  (Read 301 times)

iON555

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Synthesizers - Parameters and Classification
« on: April 27, 2018, 01:49:25 PM »
About Synthesizers (overview)

1. General Parameters

a) Oscillators

    - any type of musical instrument can be emulated by a synthesizer through waveforms SINE, SAW, SQUARE, TRIANGLE,
      PULSE, NOISE.
 
    - oscillators are synthesizers components which are producing waveforms
   




b) Filters

    - with the help of filters we add, subtract, amplify or reduce a frequencie:
 

 
c) Envelopes

    - defines the way we percep the sound (long sound, short sound etc.)
    - Attack Decay Sustain Release ( in the image we observe how the envelope is shaping the sound and the way we percep it)
     


    - with envelopes we can control filters (Filter Envelope), the amp (Amp Envelopes) etc.

d) LFOs (Low Frequency Oscillators)

    - LFOs, can be linked depends of the synth, to any other parameter  (Pitch, Pan, Filter, Volume etc.)
    - vibrato is one of the effects that can be produced with LFOs

e) Effects
   
    - delay, reverb, chorus etc. we can find this effects integrated almost in any kind of synths.








2. Classification



a) Samples Synthesize (Samplers)

  - instead of waveforms (sine, saw, square, triangle) this type of synthesises use  samples (short piece of digital audio  - recorded mp3, wav etc.)




b) Additive Synthesizers

  - they use waveforms (Sine, Saw, Square, Pulse, Noise) in blocks for creating sounds



c) Subtractive Synths

  - a simple scheme of this type of synthesize - the oscillator generates a tone  (saw, sine, triangle etc.) which goes through a filter which will amplify, reduce, cut frequencies  depends of the filter type (low pass LP, High pass Hp, Band Pass BP etc.). We can apply Envelopes (ADSR - Attack Decay Sustain Release) and LFOs.



d)  FM Synthesizers

   -  the Matrix is the main characteristic we find at this type of synths
   

   - The matrix allows us to establish connexions( also called algorithms ) easily, between synths oscillators, oscillators which in FM synthesizes are also called operators.