Show Sound Evolution Lecture At B. B A. A C. C A lecture recital lecture recital on the evolution of 01 sound reproduction using wIng special musical musical mu mu- producing equipment and a group ot of f very fine tine operatic selections such as ashe I the he Prologue and from and others will be given in n the B. B A. A C. C auditorium Friday December December December De De- cember at p. p m. m Last year Dr Leopold dector drector director d- d rector ector of ot the PhU Philadelphia Symphony Orchestra together with a group of ot the he leading sound engineers from research research re- re search earch laboratories conducted an Interesting interesting In- In experiment In sound re-en- re action The Philadelphia Symphony played in Washington D. D C. C several 1 microphones nes transmitting its music over ver several separate Tines to New NewYork NewYork NewYork York City here Dr conducted conducted con con- ducted his orchestra by telephone communIcation and merely manipulated ed controls at New York City Spectators Spec- Spec present at New York could I j scarcely believe that the music which they hey heard was as coming from the loud loudspeakers loudspeakers speakers on the stage so near was Wa the result as to re lifelike to perfection I IThe The findings of ot research work follOwing following fol- fol lOwing owing this thus experiment are the subject sub- sub j ct matter in this l lecture ture Mr K M. M 1 Manookin sound engineer from the lie laboratories cooperating with Professors Orin and Thomas Giles Olles will give a very unusual pro pro- gram Included in the willbe will willbe wille be e specimens of ot early types of ot phonographs phonographs phonographs phon phon- and radios The public is cordially invited free ot of f charge |