An objectoriented signal processing environment: The knowledgebased signal processing package
Abstract
A LISPbased signal processing package for integrated numeric and symbolic manipulation of discretetime signals is described. The package is based on the concept of signal abstraction in which a signal is defined by its nonzero domain and by a method for computing its samples. Most common signal processing operations are defined in the package and the package provides simple methods for the definition of new operators. The package provides facilities for the manipulation of infinite duration signals and periodic signals, for the efficient computation of signals over intervals, and for the catching of signal values. The package is currently being expanded to provide for manipulation of continuoustime signals and symbolic signal transformations, such as the Fourier transform, to form the basis of knowledgebased signal processing systems.
 Publication:

NASA STI/Recon Technical Report N
 Pub Date:
 October 1984
 Bibcode:
 1984STIN...8519251D
 Keywords:

 Computer Techniques;
 Fourier Transformation;
 Signal Processing;
 Computation;
 Environments;
 Manipulators;
 Numerical Analysis;
 Symbols;
 Communications and Radar