Band-Limited Sound Synthesis

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This describes band-limited sound synthesis, why it's necessary, and an efficient implementation for simple waveforms like a square wave. It has been used in several video game console sound chip emulators. These clips demonstrate the sound quality:


  1. Sampling a Waveform
  2. Square Wave
  3. The Nyquist Limit
  4. Square Wave Harmonics
  5. Band-Limited Synthesis
  6. Band-Limited Step
  7. Adding Band-Limited Steps
  8. First Difference
  9. Adding Differences
  10. Adding Band-Limited Step Differences
  11. Implementation
  12. Linear Interpolation Compared

References to digital signal processing material and source code contains a simple C++ implementation of algorithm