Accurate FFT-based hankel transforms for predictions of outdoor sound propagation

@inproceedings{Richards1986AccurateFH,
  title={Accurate FFT-based hankel transforms for predictions of outdoor sound propagation},
  author={Trevor L. Richards and Keith Attenborough},
  year={1986}
}
Without modification, the FFT-based Hankel Transform that is used in the Fast Field Program developed for applications in underwater acoustics, is not sufficiently accurate for predictions of outdoor sound propagation near to finite impedance boundaries. Numerical problems arise from singularities in the integrand and from representation of an infinite integral by a finite sum. Modifications to the basic algorithm are proposed to improve its accuracy. These modifications include integration… CONTINUE READING