Welcome to TFSA 6.0 ! TFSA 6.0 is time-frequency signal analysis toolbox which provides the user with a variety of tools for analysing nonstationary signals. TFSA 6.0 has been written to operate across a wide variety of platforms supporting Unix and MS-Windows operating systems. An important feature of TFSA 6.0 is that it has been implemented by integrating efficient C code with MATLAB script language. Because of this, the option exists for the user to integrate TFSA 6.0 C code within their own projects. For the new user a demonstration is available which features some of the many tools and utilities available in TFSA 6.0. To start this demo click the DEMO button. Help concerning the many tools and utilities is also available by selecting the "Help" popup from the TFSA 6.0 menu.