I added some new material.
An Introduction to Shock & Vibration Response Spectra Rev G
https://www.researchgate.net/publication/375280484_An_Introduction_to_Shock_Vibration_Response_Spectra_Rev_G
Tom
Here is a signal analysis package that can be freely downloaded.
https://vibrationdata.wordpress.com/2022/09/28/vibrationdata-matlab-stand-alone-executable-gui-package/
Please let me know if you have any comments or questions.
Thank you,
Tom Irvine