Vol. 24 No. 3 (1996)

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Editorial

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1-1

Proceedings of the Acoustics Week in Canada

Recent Technical Innovations in the Hardware and Application of Active Noise Control for Industrial Equipment

Chris R. Depies, David W. Kapsos

7-7
Active HVAC Duct Silencing: Noise Control in Buildings Without Exposed Fibreglass

Susan H. Dineen, Lawrence J. Gelin, Steve Wise

8-8
Active Noise Cancellation at the Ottawa Health Secinces Centre Co-generation Facility

Vincenzo Gambino, Werner Richarz

9-10
A Comparison of Two Test Methods for Measuring Young's Modulus of Building Materials

Wing T. Chu

11-11
Measurement of Typical Speech and Background-Noise Levels in University Classrooms During Lectures

Murray Hodgson, Rod Rempel, Edward Park

12-12
In Situ Measurement of the Acoustical Impedance of Foam at Oblique Incidence Using Pseudo-Random Sequences and a Single Microphone

Jing-fang Li, Murray Hodgson

13-13
Use of Residual Pressure-Intensity Index for Examination of the Accuracy of a Surface-Impedance Measurement System

Jing-fang Li, Murray Hodgson

14-14
Auralization of Speech-Communication Cues

Waqar-Un-Nissa Valiani, Murray Hodgson, M. Kathleen Pichora-Fuller, Bruce Schneider

15-15
Sound Propagation within Several Atrium Spaces

J. S. Bradley, Y. K. Oh

16-16
Impact of Acoustic Criteria on HVAC System Design for the Francis Winspear Centre for Music Edmonton, Alberta

Robert A. Campbell

17-18
Acoustic Effects of Vocal Warm-Ups on the Voice

Murray Schellenberg

19-19
Palatometric Patterns in Speakers with Repaired Cleft Palates or Severe Hearing Impairment

Barbara Bernhardt, David Loyst, Shannon Muir

20-20
The Effects of Speaking Rate on the Comprehensibility of Native and Foreign-Accented Speech

Murray J. Munro, Tracey M. Derwing

21-21
Pharyngeal Voice Qualities: Auditory Change with Pitch, and Fibreoptic Filming of Aryepiglottic Articulations

John H. Esling

22-22
The Hierarchy of Timing Strategies in Connected Speech: Patterns and Consequences

Zita McRobbie

23-23
Nasalance in Speakers of Western Canadian English and French

AnneH.B. Putnam Rochet, Bernard L. Rochet, Elizabeth A. Sovis, Dallyce L. Mielke

24-24
Perceptual and Acoustic Analysis of Word Initial Voicing Contrasts Across Speaker Age

Kelly Lucky, Megan Hodge, AnneH.B. Putnam Rochet

25-25
Acoustic Interpretation of Pharyngeal Voice Quality Settings

Lynn Marie Heap

26-26
Acquisition of [r-l] Phonemic Contrast by English Children

Elzbieta B. Slawinski

27-28
Tuning Past and Present

Ted Sambell, Denis Brassard

29-29
Memory for Music in Elderly Listeners

Lisa Clyburn, Annabel Cohen

30-30
A Comparison of a Music-Based and Verbal-Based Reminiscence Intervention Program in Enhancing Psychological Well-Being Among Elderly Nursing Home Residents

Leah D. Clyburn, Annabel J. Cohen

31-31
The French Horn vs. the Concert Hall

Darryl Caswell

32-32
The aXiO and Live Electroacoustic Music

David Eagle

33-33
Using Digital Technology in a Voice Lesson

Donald Bell

34-34
The Phoneme and the Geometry of Decision Regions in Speech Perception

Terrance M. Nearey

35-35
Speech Perception and the Phenomenon of Foreign Accent

Bernard Rochet

36-36
The Effect of Consonantal Environment on French Listeners' Perception of English [u]

Don Schweyer

37-37
The Complex Interaction of Language Comprehension in Working Memory

Byron C. Becker

38-38
Identification of Bilabial Plosives: Integration of VOT and Burst Intensity Information

Elzbieta B. Slawinski, Nhan Lap Lau

39-39
Speech Technology and Speech Science

Terrance M. Nearey

40-40
Normal Modes in Layered Media

Ronald T. Kessel

41-41
Raytracing in Anisotropic Media

Michael A. Slawinski

42-42
A Finite-Difference Scheme for Wave Propagation Through Absorbing Media

Raphael Slawinski

43-43
Reflections on Boundaries

DavidM. F. Chapman

44-44
Shallow Water Inversion Based on the Vertical Coherence of the Ambient Noise Field

F. Desharnais, DavidM. F. Chapman

45-45
Matched Field Inversion in Underwater Acoustics

N. R. Chapman

46-46
Measurement of Sound Field Statistics Near the Ground with a Large Outdoor Array

David I. Havelock, Michael R. Stinson, Gilles A. Daigle

47-47
Factors Affecting Atmospheric Sound Propagation Above Impedance Surface

Michael R. Stinson, Gilles A. Daigle, David I. Havelock

48-48
Acoustic Image Compression with a Wavelet Transform

Dean Addison, David Topham, Charles Konzelman

49-49
Increasing the Depth Capability of Barrel Stave Projectors

Y. R. Bonin, J. S. Hutton

50-50
Pe-ing in Air and Underwater

David J. Thomson

51-51
Modal Decomposition of Ocean Acoustic Fields Using Damped Least Squares Inversion

Stan Dosso, Nicole Collison, Michael Greening, John Ozard

52-52
High-Precision Acoustic Localization of Hydrophone Array Elements in the Arctic Ocean

Stan Dosso, Mark Fallat

53-53
Single and Parallel Barrier Insertion Loss by Means of Improved Diffraction Based Methods

Ken Fyfe, Amir Muradali

54-54
Efficient Tracking of a Moving Source

Martin Musil, John Ozard, Michael Wilmut

55-56
Noise and Vibration Control for Natural-Gas-Fueled Electrical Cogeneration System Located Directly Above Penthouse Residential Suites in a High-Rise Apartment Building

Tom Paige

57-57
Experimental Evaluation of Simplified Methods for Predicting Noise Levels in Industrial Workrooms

Murray Hodgson

58-58
Improved Methods for Estimating Fitting Density and Absorption Coefficient in Industrial Workrooms

Murray Hodgson, Li Ke

59-59
Empirical Models for Predicting Noise Levels and Reverberation Times in Industrial Workrooms

Nelson Heerema, Murray Hodgson

60-60
Long Distance Industrial Noise Impact, Automated Monitoring and Analysis Process

Jean-Gabriel Migneron

61-61
Evaluation of the Zwicker Method as a Suitable Environmental Noise Measurement Technique

Harminder Dhillon, David DeGagne

62-62
EUB Noise Monitoring Policy

Shane Tondu, Bill Starling, Wes Abram, Bruce Auld, Ron Wagener, David DeGagne

63-64
Multidimensional Scaling of Unfamiliar, Complex Sounds: Age and Context Effect

Prudence Allen, C-A. Bond, S. Scollic, A-M. Sinasac

65-65
Development of Memory Sequences of Animal Sounds: Relation to Digit-Span and Language Ability

Patti Graham, Annabel J. Cohen

66-66
Age-Related Processing of Dynamic Signals Independent of Presbycusis

Jane F. MacNeil, Elzbieta B. Slawinski

67-67
Frequency Resolution in Noise-Exposed Musicians

T. Fisk, M. Cheesman

68-68
Deficits in Temporal Processing Ability with Aphasia

S. M. Abel, M.D. Z. Kimelman, S. Cohen

69-69
Localization in Real and Virtual Rooms

M. K. Pichora-Fuller, B. A. Schneider, M. Hodgson, W. Valiani

70-70
The Relation Between Psychoacoustic Combination Tone and Two-Tone Suppression Phenomena in a Computational Model of the Auditory Periphery

C. Giquere, G. F. Smoorenburg

71-71
Evaluation and Improvement of the Acoustical Performance of Vented Earplugs

Mark Cheng, Murray Hodgson, Orval Baskerville

72-72
An Examination of Cochlear Filter Response Properties Using DPOAE Phase Delay Estimates in Human Adults

Denise Bowman, Jos J. Eggermont, David K. Brown

73-73
The Effects of Noise Masking on the Cortical Auditory Event-Related Potentials to Speech Sounds /ba/ and /da/

David R. Stappels, Brett A. Martin

74-74
Temporal Processing in the Young and Old Auditory Cortex

J. R. Mendelson

75-75
Periodicity Coding in Two Fields in Auditory Cortex of the Cat

J. J. Eggermont

76-76
Effects of Deafness and Cochlear Implant Use on Development of Human Auditory Function

Curtis W. Ponton, Manuel Don, Jos J. Eggermont, Michael D. Waring, Ann Masuda

77-77
The Effect of Age and Stimulus Parameters on the Optimum f2/f1 Ratio for DPOAEs

David K. Brown, Jos J. Eggermont, Barry P. Kimberley

78-78
New Consideration and Techniques in Aircraft Noise Abatement

Jon M. Woodward

79-79
Acoustical Scale Modelling of Highway Noise Barriers

Todd Busch, Murray Hodgson, Clair Wakefield

80-80
Development of Community Noise Standards for a New Town Planned for Southern Vancouver Island

C. W. Wakefield

81-81
The Utility of Aviation Noise Impact Assessment Studies in Managing Aviation Noise

Thomas Kelly

82-82
New Technologies in Airport Noise and Flight Tracking Monitoring

Edward Haboly

83-83
The Influence of Exhaust Emission Controls on the Combustion Level of an I.D.I. Diesel Engine

C. E. Bowen, G. T. Reader, J. J. Potter, R. W. Gustafson

84-84
Prediction Model "IMPACT" to Determine the Acoustic Effect of Noise Barriers Along High Speed Roads

Weixiong Wu

85-86
A Bernoulli-Euler Stiffness Matrix Approach for Vibrational Analysis of Linearly Tapered Beams

S. M. Hashemi, M. J. Richard

87-87
Vibration Isolation of Powered Overhead Doors

Chris Wolfe

88-88
A Vibration Problem

Paul Alves

89-89
Some Observations Concerning the Validity of IIC Measurements for a Floating Floor in a Judo Practice Hall

Richard Patching

90-90