Fidelio Fidelio Fidelio (originally titled ; English: "Leonore, or The Triumph of Marital Love"), Op. 72, is Ludwig van Beethoven's only opera. The German libretto was originally prepared by Joseph Sonnleithner from the French of Jean-Nicolas Bouilly, with the work premiering at Vienna's Theater an der Wien on 20 November 1805. The following year, helped shorten the work from three acts to two. After further work on the libretto by Georg Friedrich Treitschke, a final version was performed at the Kärntnertortheater on 23 May 1814. By convention, both of the first two versions are referred to as "Leonore". The libretto, with
Fidelio Telemetry Fidelio Telemetry Fidelio Telemetry is a computer software company, located in Italy, to develop telemetry software for R/C Racing Car. Its products include "Fidelio Orchestra" and "Testbed". Fidelio Telemetry develops telemetry software for processing and plotting telemetry data for R/C Car vehicles and RC racing setup. The Fidelio Company was founded in 2013, and has been providing telemetry software. In 2015 it claimed to have over 3000 customers. The rise of radio controller with telemetry support in RC Car world joint the opportunities offered by computer calculation are bringing new challenges to maintaining effective tools and analyzing programs for critical