SRA (Spectral and Roughness Analysis) by Pantelis N. Vassilakis and Kelly Fitz. Copyright © 2005/2007 Pantelis N. Vassilakis. The use of this software is free for educational, research, and non-profit purposes. For permission to copy this software or make derivative works contact Dr. Pantelis N. Vassilakis.
Vassilakis, P.N. and Fitz, K. (2007). SRA: A Web-based Research Tool for Spectral and Roughness Analysis of Sound Signals. Supported by a Northwest Academic Computing Consortium grant to J. Middleton, Eastern Washington University. [http://musicalgorithms.ewu.edu/algorithms/roughness.html] or