This site contains freely-usable Java applets for the design of various kinds of digital filters, some of which are unique. Development and research of radio systems techniques.
Site is in German and English.
The work of the ISP research group is directed towards the development and use of new instrumentation and techniques for the acquisition and processing of information from both natural and man-made signal sources. Handles mixtures of hardware and software development on a range of platforms. Developing better performance Phase Lock Loops for satellites, cellulars and wireless applications demanding high performances. You may load, save or generate signals and do various operations on and between the signals. Links to other signal processing research and development sites.