Digital Audio Resampling Home Page

Abstract:

This document describes digital audio sampling-rate conversion and related concepts. Open-source software is provided, and pointers are given to related projects and papers.

Detailed Contents (and Navigation)

• What is Bandlimited Interpolation?
• Free Resampling Software
• Theory of Operation
  • Abstract
  • Introduction
  • Theory of Ideal Bandlimited Interpolation
  • From Theory to Practice
  • Implementation
  • Quantization Issues
    • Choice of Table Size
    • Linear Interpolation Error Bound
    • Application to the Ideal Lowpass Filter
    • Relation of Interpolation Error to Quantization Error
    • Error in the Absence of Interpolation
    • Choice of Interpolation Resolution
    • Quantized Interpolation Error Bound
    • Ideal Lowpass Filter
  • Conclusions
  • Appendix: Periodic Sinc Interpolation
  • Appendix: Relation between Sinc and Lagrange Interpolation
  
  
• Bibliography
• About this document ...

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