Audio Engineering Magazine March 1953
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I here are the 30 BEST SELLING RECORDS OF 1952* • • . and over 4370 used. audiotapet for the origina..l $.(i}itJ;nd! Like Audiodiscs and Audiotape, this, 1j€l,:o.l'd' speaks. Made from Audiodisc for itself. Record, Artist & Label Master Of the thirty top hit records of the, year, all but BLUE TANGO (Leroy Anderoon-Decca) ... ... .. .. •. WHEEL OF FORTUNE (Kay St"arr-Capitol) ... ... ... one were made from Audiodisc maste.~s ! And that. CRY (Johnnie Ray-Okeh) . ... .. .. ... .. .. .. ... one - a London Record - was made ~broad. YOU BELONG TO ME (Jo Stafford-Columbia) . ...... .• . AUF WIEDERSEH'N, SWEETHEART (Vera Lynn-London ) . It is significant, too, that the original recordings. I WENT TO YOUR WEDDING (Patti Page - Mercury) .. ..• HALF AS MUCH (Rosemary Clooney-Col1Lmbia) ... .....• for over 43 per cent of these records W€lje fiorst made WISH YOU WERE HERE (Eddie FiBher- Hugo ll;interhalter- Victor) ..... ... .... .. ... .. on Audiotape, then transferred to the. master discs., HERE IN MY HEART (AI Martino - BBS) . ..... ... •.•. This marks a growing trend towar ~ t4e use of D~LICADD (Percy Faith-Columbia) ..... ........• KISS OF FIRE (Georgia Gibbs-Merc1Lry) . ..... " . ..•.. Audiotape for the original sound in 1iQ.e: wanufac-. ANY TIME (Eddie F isher-Hugo Winterhaiter-V ictor). ture of fine phonograph records. TELL ME WHY (Four Aces-Decca) ..... ... ..... .. BLACKSMITH BLUES (Ella Mae Morse-Capitol) ...... Yes - Audiodiscs and Audiotape- %1ie- truly a JAMBALAYA (Jo Stafford-Columbia) ..... .. .. .. .... BOTCH·A·ME (RoBemary Clooney-Columbia) .. ......•. record-making combination-in a fiel;dl w4ftre there; GUY IS A GUY (Doris Day-Columbia) .. .. .... ..... can be no compromise with Quality.!! LITTLE WHITE CLOUD THAT CRIED (Johnnie Ray- Okeh) : HIGH NOON (Fran kie Laine-Columbia} . .. .. .. .. .... I'M YOURS (Eddie Fisher-Hugo Winterhaiter-Victor) GLOW WORM (Mills Brothers-Decca) .... ....... .. IT'S IN THE BOOK (Johnny Standley- Capitol) . .• .. ..•. SLOW POKE (Pee Wee King-Victor) .... .•. ......... WALKIN' MY BABY BACK HOME (Johnnie R ay-Columbia) MEET MR. CALLAGHAN (Les Paul-Cap'itol) . .... , .... I'M YOURS (Don Cornell-Coral) . ....... .. .... ... .. I'LL WALK ALONE (Don Cornell-Coral) ........ .. .. • TELL ME WHY (Eddie FiBher-Hugo Winterhaiter-Victor) TRYING (Hilltopper8- Dot) . .............. ......... PLEASE, MR. SUN (Johnnie Ray-Columbia) .... : .... .. AUDIO DEVICES, INC. * According to Retail Sales. as listed in THE BILLBOARD. 444 MADISON AVE., NEW YORK- 22, ..,.. '(- Export Dept.: 13 East 40th St ., New York 1 , ~.':( r, .Y;~ <i..q'!J.~," "ARLAB'" • •• • Audiodiscs are manufactured in the U.S.A. under exclusive license from PYRAL, S.A.R.L., Paris r . , INClUDING' >~ PHYSICISTS AND ENGINEERS c. G. McProud, Editor and Publisher Harrie K. Richardson, Associale Editor Edgar M ~ Villchur, Contributing Ed"itor ATTENDING THE Eve Drolet; Production Manager Henry A. Schober, Business Manager· " Edgar E. Newman, Circulation Promotion' S. L. Cahn, Advertising Director ,~> Elizabeth Beebee, Circulation ~anager H. N. Reizes, ~dverNsi n gL.M=a!.'-n!"acfU.e !...r _~~=-JI , IoRoEo CONVENTION Editorial Advisory Board Representatives H. Thorpe Covington. Special Representative NEW YORK CITY Howard A. Chinn 677 N. Michigan Ave .• Chicago 11. III. Sanford R. Cowan, Mid-West Representative MARCH 23 - 26 ... lohn D. Calvin 67 W. 44th St., New York 18, N. Y. C. I. LeBel West Coast I. p. Maxfield Inquiries are lames C. Galloway J. W. Harbison ,~ George M. Nixon 816 W. 5th St., Los Angeles 17, Calif. invited regarding CONTENTS MARCH, 1953 Vol. 37, No. 3 openmgs Audio Patents- R'iehard H. Dort ..... ... .. .. .. .. ....... ... ... ... , . 2 on our Staff Letters . ... .. .. .... ....................... ... ...... .. , . .... 8 Employment Register . .............. .. ...... .. , ... .... .. ......... 10 ~ RADAR LABORATORIES New Literature. .. 12 ~ GUIDED MISSILE LABORATORIES Audio Photographer's Check li st-E~,§ene F. Coriell . .. .. ........ ....... , 14 ~ ADVANCED ELECTRONIC LABORATORIES Effect of .Load Impedance on Magnetic Pickup Response-Norman P iekering 19 ~ ELECTRON TUBE LABORATORIES A Power Tube Figure of Merit- Warren G. Bendel' . .. .. .. .. 21 ~ FIELD ENGINEERING DEPARTMENT The Selection of Tone-Control Parameters- Edga,,. M. Vale/llrl' .. ........ 22 Audio in the Year 1693-Allen H. FIns. .. 25 " For the conllenience of Auxiliary or Emergency Broadcast Control Rqom-Ha :rald Reed . 26 > :~ those attending the I. R. E. The Columbia "360"- Peter C. Goldma4'k ... , . ........ ....... .. ...... 28 , meetirrgs arrd Radio Engineering Theater Sound in A Small Package-Part 2-Tho1llas R. H ·nghes .. ,... .. 30 Show, members of the Handbook of Sound Reproduction-Chapter lO-Edgar M. Villehu.-r ....... 32 Laboratory Staff //Iill be al/ailable 1953 Radio Engineering Show ................ .. ...... ... ......... 38 for i1'lterll iews at the First Inventor Under the 1952 Patent Law-Albert Woodnrff tray. .. 40 Convention hotel. For appoilltlllent telephone Hughes New York Audio Fair-Los Angeles Rated Huge Success. .. .. .. .. .. .. .... .. ... 42. office, LAckawanna 4-935 0 . Equipment Report-Pilotllne'r and Pilotone Amplifier .... , .. ,....... ... .. 44 Record Revue-Ed~vQ.1·d Taf1wll Canby . .. .. ........ .. ..... , . .. 46 New Products .... ... , ................ , . .... ,... ... .. .... 54 Errata ...... ... .. .. ... .. , .. , ... ... .. ,. .... ... .. ..... ..... 55 Industry People ......... .... ........ ... ...... ... .... ....... 71 Advertising Index .. .... ............. .. ..... ......... ... .. ..... 72 HUGHES COVER Recording voice on previously made film by means of magnetic . sound track is becoming increasingly important in radio and TV. Reeves Soundcraft's RESEARCH AND Magnestripe process is being demonstrated by Georgia Landeau, DEVELOPMENT LABORATORIES NBC-TV featured actress. At the left is shown the RCA Moclel Scientific and 400 projector which reproduces both optical and magnetic Engineering Staff s.ound tracks, and which incorporates a recording CULVER CITY, LOS ANGELES amplifier for use with the Magnestripe process, COUNTY, CALIFORNIA RADIO MAGAZINES, INC., P. O. BOX 629, MINEOLA, N. Y. Assurance is required that relocation of the applicant will not cause disruption AUDIO ENGINEERING (Utle registered U. S, Pot. Olt.l Is published monthly at 10 McGo'ern Avenue, Lancaster, Pa. by of an urgent military project. Radio Magazines, Inc., Henry A. Schober, President; C. G. McProud, Secretory. Encuti,e and Editorial Omces : 204 Front St., !Uneola, N. Y. Subscription rates-United States, U. S. PossessIons and Canada, $3.00 for 1 year, $5.00 tor 2 years; elsewhere $4.00 per year. Single caples 3·5c. Printed In U. S. A. All rights reserved. Entire contents ccpyrlght 1953 by Radio Magames, Inc. Entered as Seeond Class Matter Febmary 9, 1950. at the Post Office, Lan· caster, Pa. under the Act at March 3, 1879. AUDIO ENGINEERING • MARCH, 1953 RICHARD H. DORP T SEEMS that it is time once again to some really good thinking and problem repeat a definition given a long time ago solving. This column is a review rather I of the purpose of these monthly patent than a normal article, selecting as many articles. The thought arises because among interesting (to the writer, anyw<i-Y) patents your letters sometimes appears one pointing as space allows and turning the abstruse out that for this and that technical reason patent-specification language into technical one of the patents described here is not English. We make every effort to either SO NOCR AFT all it is cracked up to be, as far as per reject or plainly label patent ideas that are FM TUNER formance is concerned. truly unworkable, but-paraphrasing the Now, don't get me wrong: such letters common radio parlance-the opinions ex America's Most Advanced Tuner are as welcome as other mail. They show pressed are almost entirely those of the k"Tlowledge and astuteness on the part of the inventors. .-Iain •.• . .. by engineers and writers, and they often give additional W hile on the subject of mail, here is an critical music-lovers for audio-quality, food for thought. But sometimes they say answer for those who would like circuit and technical advancements. Consen in effect (often between rather than on the component values in all the schematics. sus of comment: "Amazing tonal qual- lines) that since the deficiency is present vVhenever the patent furnishes them, we ity" ... "True fidelity of reproduc- we ought not to describe the patent. And put them there in plain sight. If we haven't tion" ... "Live programs really sound there's the point of disagreement. done so, they aren't available. live!" These articles are different from most And now, on to this month's review. M'iiian- . and found con others. T hey don't purport to give ab sistently effective for fringe-area re solutely reliable information right from the Distortion Measurement ception at distances from 40 to 80 writer's or other engineer's mouth ; they Owen E. DeLange's patent No. 2,618,686 miles from New York City . New, don't mean to imply that the inventions de shows a visual method of distortion meas super-sensitive circuit assures perfect scribed are either good or bad; they don't urement using the outphasing principle. signal pick up with sufficient quieting even indicate that the inventions will The purpose (probably used in wideband for excellent re~epti o n even in remote positively work. W hat they try to do is amplifiers-the patent is assigned to Bell locations. Automatic Frequency Con present ideas that