JSM 2004 - Toronto

Abstract #301552

This is the preliminary program for the 2004 Joint Statistical Meetings in Toronto, Canada. Currently included in this program is the "technical" program, schedule of invited, topic contributed, regular contributed and poster sessions; Continuing Education courses (August 7-10, 2004); and Committee and Business Meetings. This on-line program will be updated frequently to reflect the most current revisions.

To View the Program:
You may choose to view all activities of the program or just parts of it at any one time. All activities are arranged by date and time.

The views expressed here are those of the individual authors
and not necessarily those of the ASA or its board, officers, or staff.

Back to main JSM 2004 Program page
Activity Number: 161
Type: Contributed
Date/Time: Monday, August 9, 2004 : 2:00 PM to 3:50 PM
Sponsor: General Methodology
Abstract - #301552
Title: G(lambda)-stationary Processes and Their Application to Wave Match Filtering
Author(s): Huiping Jiang*+ and Henry Gray and Wayne A. Woodward
Companies: New York State Psychiatric Institute and Southern Methodist University and Southern Methodist University
Address: 1051 Riverside Rd. #48, New York, NY, 10032,
Keywords: G(lambda)-stationary processes ; filtering ; time-varying frequencies ; instantaneous spectrum
Abstract:

Methods such as wavelets short-term Fourier transforms and M-stationary processes have been developed to analyze the time-frequency properties of a process where the frequency changes with time. We review a new approach to this problem based on time deformation. In particular, we review G(lambda)-stationary processes and demonstrate their applicability to a wide variety of problems with time varying frequencies. These problems include bat echolocation, dolphin and whale chirp signals, as well as a variety of seismic signals. Some simulated examples are also included. Several examples are also given that show the application of these new methods to filtering signals with time varying frequencies. This latter application is referred to as Wave Match Filtering. Several new ideas are introduced, including instantaneous spectrum of a G(lambda)-stationary process.

  • The address information is for the authors that have a + after their name.
  • Authors who are presenting talks have a * after their name.

Back to the full JSM 2004 program

JSM 2004 For information, contact jsm@amstat.org or phone (888) 231-3473. If you have questions about the Continuing Education program, please contact the Education Department.
Revised March 2004