Electronic Systems Engineering Company (ESECO), based in Oklahoma City, was a pioneering American manufacturer of professional audio and communication equipment during the mid-20th century. Specialising in innovative automatic sound control and paging systems, ESECO developed products such as the Limpander series, which introduced early forms of adaptive sound-in-noise regulation for public and industrial spaces. Their designs combined engineering precision with practical application, serving environments ranging from airports and department stores to factories and transportation hubs.
