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\bibitem{Allen74P}
J.~Allen.
\newblock Synthesis of pure speech from a reverberant signal.
\newblock {\em U. S. Patent \#3,786,188}, 15 Jan. 1974.

\bibitem{Allen78P}
J.~Allen.
\newblock Method and apparatus for cancelling room reverberation and noise
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\newblock {\em U. S. Patent \#4,066,842}, 3 Jan. 1978.

\bibitem{Allen84P}
J.~Allen.
\newblock Data over voice transmission arrangement.
\newblock {\em U. S. Patent \#4,442,540}, 10 April 1984.

\bibitem{Allen83P}
J.~Allen.
\newblock Noise and bit rate reduction arrangements.
\newblock {\em U. S. Patent \#4,417,102}, 22 November 1983.

\bibitem{Allen90P}
J.~Allen and O.~Gitza.
\newblock Analysis arrangement based on a model of human neural responses.
\newblock {\em U. S. Patent \#4,905,285}, 27 Feb. 1990.

\bibitem{Allen94aP}
J.~Allen and J.~Songrady.
\newblock Method for customer selection of telephone sound enhancement.
\newblock {\em U.S. Patent \#5,539,806}, July 1996.

\bibitem{Allen95bP}
Allen, Dorward, Johnston, and Sydorenko.
\newblock Tonality for perceptual audio compression based on loudness
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\newblock {\em Patent \#5,737,389}, April 1998.

\bibitem{Allen96aP}
J.~Allen and D.~Youtkus.
\newblock Background noise compensation in a telephone set.
\newblock {\em U. S. Patent \#5,524,148}, 4 June 1996.

\bibitem{Allen96bP}
M.~Killion, F.~Waldhauer, J.~Wittkowski, R.~Goode, and J.~Allen.
\newblock Hearing aid having plural microphones and a microphone switching
  system.
\newblock {\em Patent \#5,524,056}, June 1996.

\bibitem{Allen96cP}
J.~Allen and D.~Youtkus.
\newblock Background noise compensation in a telephone network.
\newblock {\em U. S. Patent \#5,485,515}, 1 Jan. 1996.

\bibitem{Allen96dP}
J.~Allen.
\newblock Method and system for ensuring royalty payments for data delivered
  over a network.
\newblock {\em U. S. Patent Filed}, 23 July 1996.

\bibitem{Allen98aP}
J.~Allen.
\newblock A technique for determining a compression ratio for use in processing
  audio signals within a telecommunications system.
\newblock {\em 5737389}, April 7 1998.

\end{thebibliography}