Vol. 32 No. 3 (2004)

The following topics are dealt with: acoustic materials; educational facility; environmental noise; hearing aids; acoustic (workplace environment); acoustic instrumentation; acoustic measurement; noise emission; noise control; outdoor sound; signal processing; sound transmission; room acoustics; speech understanding; psychoacoustics; underwater sound and NRC-IRC

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Editorial

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3-3

Proceedings of the Acoustics Week in Canada

Outdoor sound propagation

G.A. Daigle

12-12
From acoustics to cognition: Some suprising results

Bruce A. Schneider

14-15
Sound radiation from poroelastic materials

F.C. Sgard, N. Atalla

16-17
From microstructure to acoustic behaviour of porous materials

C. Perrot, R. Panneton, X. Olny

18-19
A missing mass method to measure the open porosity of porous solids

Emmanuelle Gros, Raymond Panneton

20-21
Acoustic properties of loose and consolidated granulates

Kirill V. Horoshenkov, Siow N. Ting, Jan Rushforth, Mark J. Swift

22-23
Influence of micro-structural properties on the acoustic performances of novel metallic foams

Dominic Pilon, Raymond Panneton, Franck Sgard, Louis-Philippe Lefebvre

24-25
Speech recognition by grades 1, 3 and 6 children in classrooms

J.S. Bradley, H. Sato

26-27
Investigation of the optimum acoustical conditions for speech using auralization

Wonyoung Yang, Murray Hodgson

28-29
Characteristics of the noise, reverberation time and speech-to-noise ratio found in day-care centers

Michel Picard

30-31
Classroom acoustics and architects

Terence Williams

32-33
Canadian acoustical design standards for K-12 schools

Darron Chin-Quee, Nadine Munro, R.L. Scott Penton

34-35
Design of a classroom for deaf / hearing impaired student educators

Darron Chin-Quee, R. L. Scott Penton

36-37
National guidelines for Environmental Assessment: Health impacts of noise

Stephen Bly, David Michaud, Stephen Keith, Carl Alleyne, Diane McClymont-Peace

38-39
The current state of noise requirements for federal environmental assessment purposes

R.L. Scott Penton, Peter Vandelden, David Chadder

40-41
Environment noise impact assessment in quebec

Jean-Luc Allard

42-43
How urban hum became the noise limit in ontario

Tim Kelsall

44-45
Application of environmental noise guidelines - Two case studies

Ramani Ramakrishnan

46-47
Developing noise control legislation (silencing the critics)

Anita Lewis, David DeGagne

48-49
On environmental noise impact

Corjan Buma

50-51
Assessment and mitigation of community noise impacts from major highway projects-a proponent's approach

C.W. Wakefield, M.J. Kent

52-53
Environmental assessments of rail projects - The noise factor

Bill Aird

54-55
Aircraft noise information for public consumption

Torn Lowrey

56-57
Event-related potential measures of sleep disturbance by obtrusive acoustic stimuli

Kenneth Campbell, Alexandra Muller-Gass

58-59
Aircraft noise and sleep disturbance: A review of field studies

David S. Michaud

60-61
Multiband compression and contrast-enhancing frequency shaping in hearing aids

Ian C. Bruce, Shahab U. Ansari, Harjeet S. Bajaj, Kamran Mustafa

62-63
Machine learning and the auditory nerve

Jeff Bondy, Ian C. Bruce, Sue Becker, Simon Haykin

64-65
Onset of feedback howl in hearing aids

Michael R. Stinson, Gilles A. Daigle

66-67
Real-time feedback cancellation in hearing aids

Horst Arndt, Henry Luo

68-69
A low-noise directional microphone system

Jim Ryan, Brian Csermak

70-71
Objective and subjective evaluation of noise reduction algorithms for hearing aids

Vijay Parsa, Gurjit Singh, Guo Chen, Karthikeyan Umapathy

72-73
Advanced measures of bone anchored hearing aids: Do they correlate with perceptual judgments?

W.E. Hodgetts, G. Chen, V. Parsa

74-75
Hearing loss prevention in the military environment

C. Giguère, C. Laroche

76-77
Future directions for research on the combined effects of noise and vibration on cognition and communication

Ann M. Nakashima, Sharon M. Abel

78-79
Noise exposure assessment - A new ISO standard

Alberto Behar

80-81
Etude de l'exposition professionnelle au bruit des conducteurs d'autobus scolaires

Pierre Marcotte, Paul-Emile Boileau, Jerome Boutin

82-83
Music teachers' noise exposure

Dejan Zivkovic, Peter Pityn

84-85
New method and device for customizing in situ a hearing protector

Jérémie Voix, Frédéric Laville

86-87
Laboratory accreditation of the acoustical standards program at the institute for national measurement standards

George S.K. Wong, Lixue Wu, Won-Suk Ohm

88-89
Acoustic audit of environmental noise impact assessment

C.A. Krajewski

90-91
Measuring with sound level meters: The real difference between type 1 and type 2

Richard J. Peppin

92-93
Angular response of a sound intensity probe at high frequencies

S.E. Keith, V. Chiu

94-95
The effect of mass loading on the sensitivity of shock accelerometers

Lixue Wu, George S. K. Wong, Peter Hanes, Won-Suk Ohm

96-97
Simple a priori selection of sound power measurement standards

S.E. Keith

98-99
Use of sound quality metrics for the analysis of automotive intake noise

Colin Novak, Helen Ule, Robert Gaspar

100-101
Comparison of experimentaland modeled insertion loss of a complex multi-chamber muffler with temperature and flow effects

Helen Ule, Colin Novak, Tony Spadafora, Ramani Ramakrishnan, Robert Gaspar

102-103
Acoustic analysis of MRI scanners

W. Shao, C.K. Mechefske

104-105
The inexpensive noise control method -a case study

Ramani Ramakrishnan

106-107
Experiences SUR le niveau de bruit des ventilateurs domestiques personnels

Annie Ross, Boudreau Marie-Josee

108-109
Tire noise assessment of asphalt rubber crumb pavement

Steven Bilawchuk

110-111
Development of a sound masking system for road construction NOISE

Tony Leroux, Jean-Pierre Gagné, Pierre André, Line Gamache

112-113
Woodyard sounds in the community

Cameron W. Sherry

114-115
Estimating community noise in a standard way: A discussion about and the status of ISO 9613-2

Richard J. Peppin

116-117
Acoustic signal processing developments for non-invasive monitoring of vital signs and ultrasound intracranial systems

Stergios Stergiopoulos

118-119
Performance of ultrasonic imaging with frequency-domain SAFT

Daniel Lévesque, Alain Blouin, Christian Néron, Jean-Pierre Monchalin

120-121
Analysis and synthesis of the guqin -A chinese traditional instrument

Ying Ding, David Gerhard

122-123
Panocam: Combining panoramic video with acoustic beamforming for videoconferencing

David Green, Mark Fiala

124-125
Audio for committee rooms

Jeff Bamford

126-127
Human-centered design of acoustic and vibratory components for multimodal display systems

William L. Martens

128-129
Extracting semantically-coherent keyphrases from speech

Diana Inkpen, Alain Désilets

130-131
Maintaining speech intelligibility in communication headsets equipped with active noise control

A.J. Brammer, D.R. Peterson, M.G. Cherniack, S. Gullapalli, R.B. Crabtree

132-133
Speaker recognition in reverberant environments

Joseph Gammal, Rafik Goubran

134-135
A recursive least-squares extension of the natural gradient algorithm for blind signal separation of audio mixtures

M. Elsabrouty, T. Aboulnasr, M. Bouchard

136-137
A kalman filter with a perceptual post-filter to enhance speech degraded by colored noise

Ning Ma, Martin Bouchard, Rafik A. Goubran

138-139
Improved packet loss concealment for PCM VoIP

Q. Li, M. Elsabrouty, M. Bouchard

140-141
Modified spread spectrum audio watermarking algorithm

Libo Zhang, Sridhar Krishnan, Heping Ding

142-143
A survey of double-talk detection schemes for echo cancellation applications

Thien-An Vu, Heping Ding, Martin Bouchard

144-145
Double-talk detection schemes for echo cancellation

Heping Ding, Frank Lau

146-147
Parallel recognizer algorithm for automatic speech recognition

Akakpo Agbago, Caroline Barrière

148-150
On the stochastic properties of the neural encoding mechanism of sound intensity

Liz C. Chang, Willy Wong

150-151
Evaluation of objective measures of loudness

Gilbert A. Soulodre

152-153
Audio processing in police investigations

David Luknowsky, Jeff Boyczuk

154-155
Aspects of inverse filtering for loudspeakers

Scott G. Norcross

156-157
Extension of the aggregate beamformer to filter-and-sum beamforming

David I. Havelock

158-159
Acoustic pulse propagation through stably stratified lower atmosphere

Igor Chunchuzov, Sergey Kulichkov

160-161
Wave propagation in curved laminate composite structures

Sebastian Ghinet, Noureddine Atalla, Haisam Osman

162-163
On transmission of structure borne power from wood studs to gypsum board mounted on resilient metal channels - Part 1: Force and moment transmission

Andreas Mayr, T.R.T. Nightingale

164-165
On transmission of structure borne power from wood studs to gypsum board mounted on resilient metal channels - Part 2: Some simplifications for modelling

T.R.T. Nightingale, Andreas Mayr

166-167
Forward and reverse transmission loss measurements

A.C.C. Warnock

168-169
Impact sound ratings: ASTM versus ISO

A.C.C. Warnock

170-171
Practical guidance for seismically restraining piping and ductwork

Paul Meisel

172-173
Using a spherical microphone array for identification of airborne sound transmission paths

Bradford N. Gover

174-175
Les Lieux de la Musique au Quebec; Acoustique de Six Salles de Concert

Jean-Francois Hardy, Jean-Gabriel Migneron

176-177
Effet de L'Eclajrement et du Teint du Locuteur sur L'Intelligibilite Visuelle de la Parole

Ariane Laplante-Levesque, Jean-Pierre Gagne

178-179
Does a continuous masker makes speech comprehension in noise effortful?

Antje Heinrich, Bruce A. Schneider

180-181
The influence of spectral and temporal acuities in hearing on speech intelligibility

Gaston Hilkhuysen, Tammo Houtgast, Joost Festen

182-183
Hearing one or two voices F0 and vowel segregation in younger and older adults

Tara Vongpaisal, Kathy Pichora-Fuller

184-185
Perceived spatial separation induced by the precedence effect releases chinese speech from informational masking

Jing Chen, Chun Wang, Hongwei Qu, Wenrui Li, Yanhong Wu, Xihong Wu, A. Schneider Bruce, Liang Li

186-187
Peripheral versus central processing of a gap between two complex tones in young and old adults

Stephan De La Rosa, Antje Heinrich, A. Schneider Bruce

188-189
Beamforming a bent array

H. Maranda Brian, E. Collison Nicole

190-191
DATA error estimation in matched-field geoacoustic inversion

E. Dosso Stan, J. Wilmut Michael, Jan Dettmer

192-193
Geoacoustic inversion with strongly correlated data errors

Jan Dettmer, Stan E. Dosso, Charles W. Holland

194-195
SWAMI and ASSA for geoacoustic inversion

James A. Theriault, Colin Calnan

196-197
Field trials of geophones as arctic acoustic sensors

Stan E. Dosso, Garry J. Heard, Michael Vinnins, Slobodan Jovic

198-199
Aural analysis of the harmonic structure of sonar echoes

G. Robert Arrabito, Nancy Allen, Taresh D. Mistry, Kyle Leming

200-201
Recent projects in building acoustics at NRC

J.S. Bradley, B.N. Gover, R.E. Halliwell, T.R.T. Nightingale, J.D. Quirt, A.C.C. Warnock

202-203

Vol. 32 No. 3 (2004)

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