Standards Secretariat

S3/SC 1/WG 5, Noise and Vibration in Animal Laboratory Facilities

K. Lefkowitz,  kim@cstiacoustics.com
 

S2/WG 14, Prediction of Ground-Borne Noise and Vibration from Rail Transportation Systems

The WG Scope is: Standardize the prediction methodologies for ground-borne noise and vibration caused by rail transportation systems. Provide guidance with respect to instrumentation selection, field procedures, data analysis, numerical procedures, and reporting. The work may be restricted to the measurement and/or estimation of the Line Soruce Response as defined in the FTA and FA guidance manuals for environmental assessment of noise and vibration impact of rail systems.

J.T. Nelson,  jnelson@wiai.com

S12/WG 47 Underwater Noise Measurements of Ships

The Project Scope is:  S12/WG 47 recently completed work on ANSI/ASA S12.64-2009/Part 1 American National Standard Quantities and Procedures for Description and Measurement of Underwater Sound from Ships- Part 1: General Requirements.   During the process of developing this standard the WG agreed to develop the standard in parts.    

The next part will be focused on measuring noise from ships in shallow water. 

For more information, contact the Working Group Chair:

M.A. Bahtiarian, mikeb@noise-control.com

For more information, contact the Project Leader:

G. Hassell, gmhassell@QinetiQ.com

S3/WG 89, Spatial Audiometry in Real and Virtual Environments

The WG Scope is:  It is important to develop a standard procedure for Spatial Audiometry as the clinical and research applications of such test procedures are rapidly increasing. A spatial Audiometry standard should stipulate specific procedures to be used for (1) designing the real and virtual test environments, (2) selecting stimuli to be used in spatial testing, (3) calibrating stimuli in the real and virtual environments, (4) measuring Head Related Transfer Functions (HRTFs) for use in creating stimuli for Virtual Spatial Audiometry, and (5) comparing the effectiveness of the real and virtual test environments. The development of a standard prior to or concurrent with the actual introduction of spatial audiometry in a clinical setting will greatly increase the likelihood of achieving optimal versus de-facto test procedures. Initial establishment of standards for real rooms would provide an ideal basis for comparison to develop standards for virtual rooms.

For more information, contact the Working Group Co-Chairs:

N. Iyer, Nandini.Iyer@wpafb.af.mil

R.L. McKinley,  richard.mckinley@wpafb.af.mil

S1/WG 16 FFT Analyzers

The WG Scope is: To develop one or more standard(s) applicable both to stand-alone FFT analysis systems and PC or laptop-based methods. The standard(s) would address limitations and constraints on FFT analysis of acoustic signals and would define test signals and FFT results for those test signals such that the performance of FFT analysis systems could be verified and calibrated. The test signals would consist of sine wave, triangle waves, square waves, pink noise, white noise, and at least three impulses with different rise times and pulse widths. Other factors to be addressed will be sampling rates, A/D converter characteristics, A/D resolution, windowing, averaging, block size, overlap, radix, line spacing, and a section on uncertainty.)

For more information, contact the Working Group Chair:

R.L. McKinley,  richard.mckinley@wpafb.af.mil

S3/WG 93 Rotary Chair for Vestibular Function Testing

The WG Scope is:  Development of a standard to provide technical specifications for rotary chair testing of the vestibuloocular reflex and visual-vestibular interactions. This will include minimum acceptable tolerances, as well as the capability to perform a minimum set of evaluations. While the basic tests required of a rotary chair will be limited to vertical-axis rotary chair testing, when available in a rotary chair device, this standard will include acceptable tolerances and basic evaluations, for smooth-pursuit and optokinetic tests. The Working Group will also evaluate off-vertical axis rotations, subjective visual vertical and subjective visual horizontal testing for possible inclusion in the standard.

For more information, contact the Working Group Co-Chairs:

R.F. Burkard, rfb@acsu.buffalo.edu

C. Wall, cwall@mit.edu

S3/WG 59, Measurement of Speech Levels

The WG Scope is: To develop a standard method for measurement of speech and speech-to-noise ratios in technical reports and equipment specifications. The standard should provide the best measurement of speech levels and indicate the number of samples, weighting (overall vs. A-level) and total length of speech sample. In addition, approximations may be suggested to determine speech for simple sound level meter observations. The standard would not consider microphone type, placement or other specification for the physical measurement of speech, but would concentrate on assessment after the speech is in recorded form.

For more information, contact the Working Group Chair:

M. Ericson, mark.a.ericson@us.army.mil

S3/WG 88, Standard Audible Emergency Evacuation and Other Signals

The WG Scope is:  To revise and update ANSI S3.41-1990 (R2001) American National Standard Audible Emergency Evacuation Signal so that it meets the current needs of the life safety community and the signal manufacturing industry.

For more information, contact the Working Group Chair:

R. Boyer, bob.boyer@ge.com

WG 16, Wind turbines

This working group was formed to consider a potential new work item proposal on condition monitoring and diagnostics of wind power plants.

For more information, contact the Secretary:

S.B. Blaeser, sblaeser@aip.org