Is the log in log-power spectral features natural logarithm, or common log of base 10? does it even matter? I found sources for how to calculate it, but they all call it 'log'. no one mentions the base for the logarithm.
The answers provided for this question were insightful though I checked a few papers and finally realized that for log power spectral features (speech separation use cases), natural logarithm is used. though this is a very specific use case and both common base-10 log and natural log can be used in speech processing depending on the application.