spandsp 0.0.6
Telephone line model

What does it do?

The telephone line modelling module provides simple modelling of one way and two way telephone lines.

The path being modelled is:

  • terminal
  • | < hybrid echo (2-way models)
  • |
  • | < noise and filtering
  • |
  • | < hybrid echo (2-way models)
  • CO
  • |
  • | < A-law distortion + bulk delay
  • |
  • CO
  • | < hybrid echo (2-way models)
  • |
  • | < noise and filtering
  • |
  • | < hybrid echo (2-way models)
  • terminal