Audio images

[mdlbear]

From Don Simpson (via email) comes this intriguing article on images hidden in the spectrograms of audio tracks. I hadn't thought of it, but it's perfectly straightforward mathematically. You have time on the X axis, and frequency on the Y axis: take your image, string together the inverse FT of each vertical stripe, and there you have it.

Hmm.

Comments

Cool

[capplor.livejournal.com]

Does anyone have software that would convert common digital audio formats directly?

Re: Cool

[mdlbear]

On Linux, sox handles all the common formats and a lot of uncommon ones. Of course, that excludes formats with DRM and the proprietary formats of the common Windows and Mac audio editors. For that matter, I haven't found any command-line tools for Audacity files, either.

Also on Linux, transcode (in the mplayer package) handles a wide range of video formats.