Table Of Content

Applied Acoustics 34 (1991) 299-301 CONTENTS OF VOLUME 34 Number 1 Harmonic Distortion in Electret Microphones MUHAMMAD TAHER ABUELMA’ATTI (Bahrain) Design of New Ceiling Reflectors for Improved Ensemble in a Concert Hall J. H. RINDEL (Denmark) The Influence of Linear Sound Bridges Linking Panel Edges on the Airborne Sound Insulation of Double Partitions R. YU. VINOKUR (USSR) Traffic Noise in a Built-Up Area. RUFIN MAKAREWICZ (Poland) Technical Note A Relation Between Speech Intelligibility and Distribution of Speech Pressure About the Head SLOBODAN T. JOVICIC (Yugasiaviay News and Views . Book Review Letter to the Editors Calendar Number 2 Application of the Sound Intensity Technique to Measurement of Field Sound Transmission Loss ‘ J.C. S. LAI & M. BURGESS (Australia) Application of the Sound Intensity Technique to Noise Source Identification: A Case Study . J.C. S. LAI hiesteitie) Prediction of L4,o97 Traffic Noise Levels in the City of Visakhapatnam, India P. RAMALINGESWARA RAO & M. G. SESHAGIRI RAO (India) 299 Applied Acoustics (34) (1991)}—© 1991 Elsevier Science Publishers Ltd, England. Printed in Great Britain 300 Contents of Volume 34 Natural Temporal Variability of Atmospheric Acoustic Absorption Coefficients. D. KEITH WILSON & DENNIS W. THOMSON (USA) Exact Longitudinal Vibration Frequencies of a Variable Cross-Section Rod MOSHE EISENBERGER (Israel) Statistical Energy Analysis on the Damping Effect of the Oil Pan on Engine Vibration A. Q. LIU, Ss. P. ‘LIM & S.T . CHOW (Singapore) Technical Note The Effect of Mass Convection in a One-Dimensional Acoustic Model: A Finite Element Application S. DE ROSA & G. PEZZULLO (Italy) Calendar Number 3 An Empirical Study of Comfort Afforded by Various Hearing Protection Devices: Laboratory versus Field Results . MIN-YONG PARK & JOHN G. CASALI (USA) On the Study of the Active Attenuation of Noise in an L-Formed Duct ’ JILUO ZHOU, TIELIN SHI & SHUQI LU (People’s Republic of China) Transmission of Structure-Borne Sound in Buildings Above Railways S. LJUNGGREN (Sweden) Prediction of Sound Fields in Rooms Using Statistical Energy Analysis REN WENTANG (People’s Republic of China) & KEITH ATTENBOROUGH (UK) Technical Note Impedance of Polyurethane Foams MATTHEW K. LING (UK) Calendar Number 4 Statistical Analysis of Noise Levels in Urban Areas A. GARCIA & L. J. FAUS (Spain) A Theoretical Study of Sound Transmission Through Aerogel Glazing Systems. P. P.N ARANG (Australia) Contents of Volume 34 Technical Notes Some Practical Considerations on Vibrating Timoshenko Beams : J. A. REYES, R. E. ROSSI, P. A. A.L AURA, J. L. POMBO & D. PASQUA (Argentina) Acoustic Design of the Gymnasium and Natatorium of Chinese National Olympic Sports Centre ; ’ ; ; XIANG DUANQI, WANG ZHENG & CHEN JINJING (People’s Republic of China) Sound Absorbing Double Curtains from Local Textile Materials Y. 1. HANNA & M. M. KANDIL (Egypt) Book Reviews Calendar