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Audio Ngin Ring Soci AUDIO �NGIN��RING SOCI�TY OFFICERS FOR 1953 President F. SUMNER RAU Executiz'e Vice-President Treasurer JERRY B. MINTER RALPH A. SCHLEGEL Central Vice-President TVestern Vice-President Secretary W. S. PRITCHARD R. L. BURGESS C. J. LEBEL GOVERNORS JOHN D. COLVIN C. G. McPROUD C. R. SAWYER PRICE E. FISH ALBERT A. PULLEY \V. OLIVER SUMMERLIN JAY R. QUINN COMMITTEE CHAIRMEN Admissions Nomina tions J. D. COLVIN C. R. SAWYER Awards Finance Publications R. F. OLSON W. O. SUMMERLIN JERRY B. l\lINTER Constitution and By-Laws Historical Public Relations \VALTER O. STANTON V. J. LIEBLER C. A. RACKEY Convention Sections Lecture Course JERRY B. l\lrNTER C. J. LEBEL JAY R. QUINN Educational Standards Standards R. H. ROSE Membership W. H. OFFENHAUSER, JR. W. H. HAZLETT Employment Register Test Records C. G. McPRouD �. C. PICKERING Sections Cincinnati Cleveland Membership Columbus Los Angeles ,\pplication blanks for membership New York may be obtained from the Secretary at San Francisco P. O. Box 12, Old Chelsea Station, Southern Michigan �ew York 11, Kew York. Publications Editor: LEWIS S. GOODFRIEND The Journal of the Audio Engineering Society is published quarterly and supplied to all members of the Audio Engineering Society in good standing. Back numbers can be obtained from the Secretary at P. O. Box 12, Old Chelsea Station, New York 11, New York. Journal of the AU 010 ENGINEERING SOCIETY JANUARY 1953 VOLUME 1, NUMBER 1 This issue contains the papers presented at the Audio Fair held in conjunction with the Fourth Annual Convention of the Audio Engineering Society, in New York, October 29, 30, 31, and November 1, 1952. Binaural Disc Recording - Emory Cook Methods of Measuring Surface Induction of Magnetic Tape - J. D. Bick 4 ANew Professional Magnetic Recording Tape - Edward Schmidt 10 Constant-Current Operation of Power Amplifiers- H oward T. Ste1"ling and Alan Sobel 16 ANew Pocket Wire Recorder - OliveI' Read 22 Musical Therapy -- R. L. Cardinell 27 Some Consideration Regarding Volume Production of Electronic Musical Instruments - George H. H adden 29 Gun-Shot Reinforcers and Synthesizers - J. L. Hathaway and R. E. LafJerty 37 The Deposited-Carbon Resistor: An Essential Component of Good Audio Design Practice - Llewellyn Bates Keim 42 Electrolytic Capacitors, Why and When - M ark VanBuskirk 46 Choice of Electron Tubes for Audio Circuits - W. R. Ayres 49 Review ofNew Printed Circuit Development and Audio-Frequency Applications - Arthur W. Kelly, Jr. 53 Intermodulation Measurements - H. H. Scott 56 Measurement of Nonlinear Distortion - Alan Bloch 62 Comparative Study of Methods for MeasuringNonlinear Distortion in Broadcasting Audio Facilities - Donald E. M axwell 68 Distortion in Phonograph Reproduction - H. E. Roys 78 Basic Problems in Audio Systems Practice - W. E. Stewart 85 Audio-Frequency Input Circuits - William B. Snow 87 Attenuator Types and Their Application - Chester F. Scott 95 The Design of Speech Input Consoles for Television - Robert H. Tanner 99 Grounding, Shielding, and Isolation - Arthur Davis 103 Consideration of Some Factors Concerning the Use of Audio Transformers - W. E. Lehnert 105 Bypass and Decouplil1g Circuits in Audio Design -Lewis S. Goodfriend 111 Resistance-Capacitance Networks in Amplifier Design- E. D. Sisson 116 Attenuation Equalizers - F. R. Bies 125 Network Transformations -L. N orde 137 Analyzing the Long-Playing Pickup Problem - Theodore Lindenberg 140 Binaural Sound Reproduction at Home - H. T. Sherman 142 Testing and Adjusting Speaker Installations with the Sound-Survey Meter - W. R. Thurston 146 Concert-Hall Realism through the Use of Dynamic Level Control - John Nigro and J erry B. M inter 160 Journal Authors 165 Journal of the Audio Engineering Society, Volume 1, Number 1, January, 1953. Published qual·terly by the Audio Engineering Society. F'ublication office, 104 Liberty Street, Utica, N. Y. Executive and editorial office, Box 12, Old Chelsea Station, New York City 11. Application for entry as second· class matter at the post office at Utica, N. Y. is pending. Subscription to non-members is $8 per year. Copyright 1953 by the Audio Engineering Society. Journal of the AUDIO ENGINEERING SOCIETY OFFICERS FOR 1953 APRIL 1953 VOLUME 1, NUMBER 2 President F. SUMNER HALL Some Audio Considerations in Air Control Towers­ Executive Vice-President JERRY B. MINTER John C. Webster and Paul O. Thompson 171 Central Vice-P"esident W. S. PRITCHARD History and Development of Stereophonic Sound Recording­ Western Vice-President Ross H. Snyder 176 R. L. BURGESS Treasm"er RALPH A. SCHLEGEL An Adventure in Microphone Design - Ifoward T. Souther 180 Seere tat·y C. J. LEBEL Modern :Vlethods of Filter Design - Leslie N orde 186 GOVERNORS The Vibrating String as an Audio-Frequency Circuit Element­ JOHN D. COLVIN JAy H. QUINN John A. McWaid 199 PRICE E. FISH C. R. SAWYER C. G. MCPROUD W. O. SUM MERLIN ALBERT A. PULLEY The Application of Printed Circuits and Miniaturized Assemblies to Audio Amplifiers and Equipment- J esse Kanarek 202 COMMITTEE CHAIRMEN Admissions: J. D. COLVIN A Condenser Microphone for Quantitative Determinations of Awards: H. F. OLSDN Ballistic Shock-Wave Intensities-W. C. Hornbostel and Constitution and By-Laws: V. J. LIEBLER Marcus C. Eliason 208 Convelttion: JERRY B. MINTER Educational Standards: R. H. ROSE Employment Register: C. G. MCPROUD A Low-Noise FM Recording System -- Walter T. Selsted 213 Finance: W. O. SUM MERLIN Historical: C. A. RACKEY Aircraft Public Address System Operation under High-Level Ambient Lecture Course: JAY H. QUINN Noise Conditions - Jackson C. Baker 216 Membership: W. H. HAZLETT Nominations: C. R. SAWYER Publications: JERRY B. MINTER Journal Authors 221 Public Relations: WALTER O. STANTON Sections: C. J. LEBEL Section Meetings 223 Standards: W. H. OFFENHAUSER, JR. Test Records: N. C. PICKERING Editor: LEWIS S. GOODFRIEND Sections A ssociate Editor: VINCENT SALMON Cincinnati New York The Journal of the Audio Engineering Society is published quarterly and supplied to Cleveland San Francisco all members of the Audio Engineering Society in good standing. Application blanks Columbus Southern Michigan for membership and back numbers of the Journal may be obtained from the Secretary, Los Angeles P. O. Box 12, Old Chelsea Station, New York 11, New York. Journal of the Audio Engineering Society, Volume 1, Number 2, April, 1953, Published quarterly 'by the Audio Engineering Society. Publication office. 104 Liberty Street, Ctica, N. Y. Executive and editorial office, Box 12, Old Chelsea Station, New York City 11. Entered as second· class matter at the post office at Utica, N. Y. Subscription to non· members is $8 per year. Copyright 1953 by the Audio Engineering Society. Journal' of the AUDIO ENGINEERING SOCIETY OFFICERS FOR 1953 JULY 1953 VOLUME 1, NUMBER 3 P"esident F. SUMNER HALL Executive Vice-President Structure and Performance of Magnetic Transducer Heads­ JERRY B. MINTER Otto Kornei 225 Central Vice-President W. S. PRITCHARD Western Vice-President - 232 HARRY BRYANT* New High-Grade Condenser Microphones F. W. O. Bauch Treasurer RALPH A. SCHLEGEL Secretary A Variable-Speed Distributor System for Synchronizing Out-of-Sync C. J. LEBEL Pictures and Sound Tracks - H. 111. Tremaine 241 COVERNORS JOHN D. COLVIN JAy H. QUINN ANovel Audio Sweep Generator - Peter Pohl and Henry Wolcott 244 PRICE E. FISH C. R. SAWYER C. C. MCPROUD W. O. SUMMERLIN ALBERT A. P,ULLEY " The Amplifier and Its Place in the High-Fidelity System - ' COMMITTEE CHAIRMEN ( H. H. Scott 246 Admissions: J. D. COLVIN Awards: H. F. OLSON Constitution and By-Laws: V. J. LIEBLER Two Ears in Three Dimensions - Norman C. Pickering and Convelltion: JERRY B. MINTER KI Eric Baender, M.D. 255 Cooperative Research: PRICE E. FISH Educatiollal Standards: R. H. ROSE ' Employment Register: C. C. MCPROUD - 262 Finance: W. O. SUMMERLIN A Variable Inductor R. E. Allison Historical: C. A. RACKEY Lecture Course: JAY H. QUINN Membership: W. H. HAZLETT Review of New Materials and Techniques in High-Fidelity Trans­ Nomillatiolls: C. R. SAWYER former Design-Le,wis W. Howard 265 Papers Procuremellt: W. R. DRESSER Publicatiolls: JERRY B. MINTER Public Relations: WALTER O. STANTON Journal Authors 269 Sections: C. J. LEBEL Standards: W. H. OFFENHAUSER, JR. Test Records: N. C. PICKERING Section Meetings 271 Sections Cincinnati New York Cleveland San Francisco Columbus Southern Michigan Editor: LEWIS S. COODFRIEND Los Angeles Associate Editor: VINCENT SALMON British Liaison British Sound Recording Association The Journal of the Audio Engineering Society is published quarterly and supplied to London W. C. I, England all members of the Audio Engineering Society in good standing. Application blanks * Interim appointment to repbce R. L. Burgess, for membership and back numbers of the Journal may be obtained from the Secretary, deceased. P. O. Box 12, Old Chelsea Station, New York 11, New York. Journal of the Audio Engillt"ering Society, Volume 1, Number 3, July, 1953, Published quarterly by the Audio Engineering Society. Publication office, 104 Liberty Street, l:ti ca. N. Y. Executive and editonal office, Box 12, Old Ch{::lsea Station, New York 11, N. Y. Entered as �econd-class matter at tI,e post office at ('tica, N, Y. Subscription to non· members is $8 per year. Copyright 1953 by the Audio Engineering Sodety. Journal of the AUDIO ENGINEERING SOCIETY OFFICERS FOR 1953 OCTOBER 1953 VOLUME 1, NUMBER 4 President F; SUMNER HALL Executive Vice-President JERRY B. MINTER Design of an Electrostatic Loudspeaker - Theodore Lindenberg, Charles Smiley, and Jerry Minter . Cetltral. Vice-President E. B. 273 W. S. PRITCHARD Design Factors in Horn-Type Speakers - Daniel J. Plach 276 Western Vice-President HARRY BRYANT* A New Transformerless Amplifier Circuit - Kerim Onder . 282 Treasurer RALPH A. SCHLEGEL A Stereodynamic Multichannel Amplifier for Single or Binaural. Secretary Input - John Nigro . C. J. LEBEL 2-87 GOVERNORS A New 30-Watt Power Amplifier- Sidney A. Corderman and JOHN D. COLVIN JAY H.
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