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Synthesizer component parts

Discussion in 'General Electronics Discussion' started by adamthing, Apr 22, 2016.

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  1. adamthing


    Apr 21, 2016
    What are the general parts needed for an analogue usb synthesizer? Just curious for a small DIY idea.
  2. Harald Kapp

    Harald Kapp Moderator Moderator

    Nov 17, 2011
    Welcome to EP, Adam.

    USB is digital, this is a contradiction to the "analog" requirement. Dou you mean an analog synth that is controlled via USB?

    Can you be more specific:
    • Do you have a rough schematic (block diagram) of the different parts of the synth and how they interact (digital control via USB, analog signal generation, mixer, output stage etc.)?
    • What do you want to synthesize:
      - signal forms
      - frequencies
      - number of analog channels
      - filters
      - etc. etc.
    • Mode of control?
    For starters, have a look at this simple synthesizer kit. No USB control, digital synthesis (not analog) and rather simple.
  3. adamthing


    Apr 21, 2016
    A usb powered analogue synthesizer with two VCO's and a LP and HP filter. One that can input its signal into a computer DAW or audio editor. the notes would be painted through a midi editor or an external midi controller can be hooked up to it i suppose via another usb port. im new to electronics so i cant provide a diagram but ill checkout that kit, thanks!
  4. BobK


    Jan 5, 2010
    Your PC sound card already has a quite capable synthesizer. What would this add?

  5. Harald Kapp

    Harald Kapp Moderator Moderator

    Nov 17, 2011
    So USb would be for power supply only (5V/500mA)? Not for control?

    Via USB or via the PC's analog audio input?

    What's the use of building an analog synthesizer when the result is digitized in the PC? You can use a digital synthesizer in the first line then. You don't even need a soundcard for this part (although for output of the result you'll need one in any form).

    To create an "analog" waveform within the computer you don't need dedicated hardware. You could even simulate the "analog" synthesizer using LTSPICE and output the resulting waveform to a .wav file for further processing.
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