Welcome to the 'Completely Free Software' E-mail Newsletter. The programs listed here are completely free for non-commercial use, even though some may be shareware or commercial products.
None are time-limited and all are fully functional.
If you know any that aren't exactly as specified, please let us know and they will be removed immediately. Spectrogram is a dual channel audio spectrum analyzer which can accept any input from a sound card and then save it as a WAV file. It can provide either a scrolling time-frequency display or a spectrum analyzer scope display in real time. It allows unlimited recording and playback of the sounds from the audio spectrum display. This is a terrific audio spectrum analyzer and we were very impressed with its operation, presentation, functionability and ease of use.