Thursday, May 28, 2009

Spectrogram - grab it while you can

Spectrogram is a Windows-based audio spectrum analyzer that uses the computer sound card. Originally freeware, later versions had more features and required a registration fee to be paid. I first came across the program when building my Elecraft K2 back in 1999. By looking at the spectrum of band noise, you could easily set up the crystal filters so that both sides are evenly balanced and the passband where you want it to be.


The company that developed Spectrogram, Visualization Software LLC, is closing down at the end of May, and according to a notice on the download page, the website and downloads will not be available after that. The last version, Spectrogram 16, is now freeware again. So grab it while you can. You never know when you might need it.

2 comments:

PE4BAS, Bas said...

Thanks for the tip, I just downloaded me a copy. You never know...
However the link you provided did not work. Although the URL is correct as far as I can see. I did go to http://www.visualizationsoftware.com/ direct to find the download page.

g4ilo said...

Perhaps the author did something clever to stop direct links to the download page. Anyway, as promised, the entire site has closed now, so it's immaterial.

If there is a place where this program can still be downloaded legally, perhaps someone will post a link here for the benefit of those reading this after 31 May. Please do NOT ask me to email my copy to you. I use Gmail and it blocks all executable attachments incoming or outgoing, so I can't.