Download of Speech Filing System V4 4.8.1 was on 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 4.8, 4.0 and 1.2.
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. The program is categorized as Development Tools. The latest version of the software can be installed on PCs running Windows 7/8/10/11, 32-bit. This free program is a product of Mark Huckvale, University College London.
From the developer:
SFS 4/Windows is a free computing environment for PCs for conducting research into the nature of speech. It comprises software tools, file and data formats, subroutine libraries, graphics, special programming languages and tutorial documentation. It performs standard operations such as acquisition, replay, display and labelling, spectrographic and formant analysis and fundamental frequency estimation.
You may want to check out more software, such as Apex Text to Speech, Staggered Speech 2009 or Reverse Speech Professional, which might be related to Speech Filing System V4.
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