Polyphase IIR Java Toolset is an on-line tool allowing to design and analyse polyphase order-reduced IIR filter structures including the ability to perform and test the effects of the frequency-transformation on the basic two-path filter architecture.

In case that the Applet gets bocked from running due to your security settings, you will need to open the "Java Control Panel" on your computer and add "http://www.rfsat.com" to the "Exception Site List" under the "Settings" tab.

For demo access login as 'guest' and without a password.