UltimaSound II 2.61 could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The most popular versions among the program users are 2.6, 2.3 and 2.0.
UltimaSound II works fine with 32-bit versions of Windows XP/Vista/7/8/10/11. The most frequent installation filename for the software is: UltimaSoundII.exe. The actual developer of the free software is Ultimaserial. UltimaSound II lies within Multimedia Tools, more precisely Codecs. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software.
From the developer:
With UltimaSound spectrogram software and a laptop, you can see a vivid picture of your voice and music in frequency domain in real time. The application is easy to install, easy to use and has a friendly user interface. This utility can be used for science fair and teaching in middle/high school to better understand the elements of sound/voice/music: frequency, amplitude, pattern, spectrum.
You may want to check out more software, such as E2Lab - Eternity II Puzzle Editor And Solver, Domain Time II Client or ARK for IIS - ARKIIS, which might be related to UltimaSound II.