The ELODIE interpolator is a service buil on top of the ELODIE library to generate a spectrum given the atmospheric parameters: Teff, log(g) and [Fe/H]. The typical usage of this function is to generate a grid of atmospheric spectra for a set of parameters in order to feed a population synthesis program. The grid used for the PEGASE.HR program has been generated with this method. The program is based on a method described in Prugniel & Soubiran (2001) and uses the version of the stellar library presented in Prugniel & Soubiran (2004). The service responds to the metadata and data requests defined in VOspec for theoretical spectra access (called TSA). A normal SSA positional search will return an empty result.