Patricia Davies
Professor, School of Mechanical Engineering,
Director, Ray W. Herrick Laboratories,
Past President, Institute of Noise Control Engineering.

Couresy Appointment: Professor, Psychological Sciences,

Contact Information:
Ray W. Herrick Labs
177 S Russell Street
Purdue University
West Lafayette, IN 47907-2099
Phone: 765-494-9274

Picture of New Herrick Building
Picture taken during the Herrick Labs' Industrial Advisory Committee (IAC) Meeting, October 2014. IAC, Herrick Faculty, Students and Staff in front of the recent $30M expansion of the Ray W. Herrick Laboratories, completed Summer 2013.
ME Group and Laboratory Affiliations:
  • Systems, Measurements and Controls
  • Mechanics including Acoustics and Noise Control
  • Ray W. Herrick Laboratories

Research Interests:  (More Details
  • Signal processing and Data Analysis/font>
  • System modeling 
  • Modeling of Viscoelastic Materials
  • Seat-Occupant Dynamics
  • Condition monitoring of machinery 
  • Sound quality
  • Perception-based engineering
  • Impact (Annoyance and Sleep Disturbance) of Aircraft Noise

Recent Research Sponsors:

Cummins, FAA PARTNER Center of Excellence, NASA (Langley), Carrier, Ford Motor Company, Navy (MURI).

Standards Activities:
ISO Technical Committee 43, Working Group 9 working on ISO 532-1 and ISO 532-2 Loudness Standards.

ANSI/ASA Working Group 51 working on S3.4-2007(R2012) Procedure for the computation of loudness of steady sounds.
Give input on updates to this standard .
Links to Web Sites:
Relevant Societies:

Degrees: Classes:
Short Courses:
  • Digital Signal Processing
  • Sound Quality
Conference Organization:
  • Sound Quality Symposiums: SQS98 (Ypsilanti), SQS02 (Dearborn), Produce Sound Quality 2002 (Ypsilanti), SQS 2008 (Dearborn)
  • NoiseCon 1988 (Purdue), 2005 (Minneapolis), 2013 (Denver)
  • Acoustical Society of Americal Meeting, Indianapolis, Fall 2014
Upcoming Conferences of Interest:
23rd International Compressor, 16th Refrigeration
& 4th High Performance Buildings

11-14 July, 2016.
Purdue University,
West Lafayette, IN, USA.

NoiseCon 2016
13-15 June, 2016.
Providence, Rhode Island, USA.

Internoise 2016
21-24 August, 2016.
Hamburg, Germany.

International Congress on Acoustics, ICA 2016
5-9 September, 2016.
Buenos Aires, Argentina.

Upcoming ASA Meetings
171st: 23-27 May, 2016, Salt Lake City, UT, USA.

172nd: 28 Nov-2 Dec, 2016, Joint with Acoustical Soc. Japan, Honolulu, Hawaii, USA.

173rd: 25-29 June, 2017, Boston, MA, USA.

173rd: Fall, 2017, To be Decided, USA.

173rd: 7-11 May, 2018, Minneapolis, MN, USA.