The directory PSS contains the files and the subdirectories used for the website accompanying the book "The Perceptual Structure of Sound" by Dik J. Hermes, published by Springer, 11 June 2023. This book has many sound demonstrations which are an essential part of the many figures in this book. Readers of the print version of this book can access these sound files via the website https://dhermes.ieis.tue.nl/PSS.
Readers of the E version of this book can also listen to these sound demonstrations by clicking on the link "demo" at the end of the figure caption. In addition, these figure captions contain a link "Matlab" to a site showing the Matlab script with which the sounds are synthesized. 

The index file "index.html" of https://dhermes.ieis.tue.nl/PSS contains the links to the sound files and the html files. In order to be properly displayed, this file "index.html" must be accompanied by the file "PSS.css". The sound files are all in the directory "wavFiles"; the html files are in the directory "htmlFiles". These html files show the matlab scripts with which the sound files are synthesized. These html files also contain a link to the copyright statements of the book, "copyrightDJH.html" and "copyrightPRDJH.html".

These files can be retrieved from the repository:
https://doi.org/10.4121/22055792.

The sound files in the directory "wavFiles" can be retrieved from the repository 
https://doi.org/10.4121/20384457
The html files showing the matlab scripts should be placed in the directory "htmlFiles" and can be retrieved from the repository 
https://doi.org/10.4121/22284283.