Skip to content. | Skip to navigation

Sections

• Home
• Apps
  • Daisy Bluetooth Plant Moisture Sensor
  • FractalScapes
    • Fractals
      • Playback feature animation video
    • FAQ
      • What kind of Fractals does FractalScapes make
      • How does FractalScapes work
      • What is a Replacement Rule
      • What's the difference between Easy & Advanced Rules
    • Blog
      • Basic Non-Scrolling UITableView and UICollectionViews
      • FractalScape almost in beta
      • FractalScape and Bluetooth LE
      • FractalScape, Exciting new features
      • FractalScapes has a Facebook page
      • FractalScapes in Open Beta
      • Fun with auto layout.
      • FractalScapes is on the App Store!
      • Just released 'Eyein' update
  • Aligyro
    • Aligyro Settings
    • Aligyro Support
    • Aligyro Math
    • Wikipedia Entry
    • Dynaflex
  • Beta Testing Process
• Projects
  • Daisy Sensor App
  • Bluetooth Integration
  • Slowhand for the Mac
  • FractalScapes Interactive Fractal Designer
  • MailPortals formerly MailBoxes
  • NMR Pulse Programmer Interface
  • 2 Plane Production Balancing Automation
  • Digital waveform synthesizer for music
• Blog
  • A theory
  • BLE Accel Code
    • Bluegiga Files
      • attributes.txt
      • gatt.xml
      • hardware.xml
      • project.bgproj
      • bgdemo.bgs
    • iOS Project
  • Introduction
  • iOS AppDelegate Timeline
  • On the Gyro Speed
  • How to become a bluetooth low energy (BLE) developer for under $25
  • Smalltalk - What it is and how it influenced Apple software development for the last 35 yrs
  • Bindings, the Best Code is the Code Not Written
  • CoreBluetooth Class Summary
  • The Tech Below the Surface
  • Recording User Intents
  • History of Flash
  • My Time Capsule Disappeared!
  • Magic vs Science & UICollectionViews
  • images
  • Autolayout crashing Xcode
  • First Impressions of Parrot Flower-Power
  • CocoaHeads Talk Materials
    • constraintsForFlowing:
    • calcHConstraint:
    • CocoaHeads IB_Designable and MVC.pdf
  • Contrasting views on Protocols
  • More Swift protocol thoughts
  • Things to remember UILocalNotification
  • Excited by MOOV NOW
• About
  • MOEDAE LLC
  • Taun Chapman
  • Creo Products Work

Info

Digital waveform synthesizer for music

Way back in 1980-81 almost pre-digital

As a senior in high school, conceived of, designed, and implemented a programmable hardware and software based digital waveform synthesizer to be used as a keyboard synthesizer. This was in the day of analog MOOGs and FM synthesis.

Designed and bread boarded a digital circuit which involved filling a couple of RAM buffers with the desired cyclic waveform and volume envelope. A programmable clock was then used to feed the values from the buffers to a D/A, filter, op-amp as pre-amp then output to a normal amplifier. The board was programmed using a custom programmed written for a 6502 CPU and using an I/O board on an Ohio Scientific C4P computer. The circuit designed was mentored by an Electrical engineer in Edmonton, Alberta Canada during a Westtown Senior Project.

Unfortunately, the project was never commercialized. However a year later, and a mile down the road from my High School, Ensoniq was started with exactly the same concept and similar parts but as far as I know, totally unrelated to what I had done. Something in the local water perhaps?

© 2000-2023