Spectro Frequency Analyzer software provides you with the ability to perform real-time FFT measurements using your PC or laptop sound card. The program computes the averaged auto power spectrum of the time signal recorded by a microphone, connected to the sound card. RMS or peak hold analysis can be performed with linear or exponential averaging, applying the most popular window functions; and FFT amplitudes can be A, B and C-weighted. Time History and Frequency Spectrum results are presented in graphical format with cursor tools for precision amplitude analysis. Results can be saved in a text file and imported into a spreadsheet program for additional analysis and presentation. The Sampling Rate is 44.1 kHz and the software is 16 Bit supported. Version 2.0 adds A, B and C amplitude wiegthings.