Design and manufacture a wide range of ultrasonic machines for welding, cleaning, sieving, non-destructive testing and sonochemistry . India

Guide to audio and video software programs and related material.

Organize, view, sort and print descriptions for mp3 files as well as play files in the default player. [Windows]

Bogen Communications is a leading manufacturer and designer in the field of telephone paging, public address, intercommunications, and background music systems for over 70 years.

Full line of speakers with metal-driver technology. USA.

Project to develop new calculation methods for railway, road, industrial and aircraft noise, run by European consortium.