Show I 1 ej ft C I 1 I 1 I 1 1 T r 4 WC 1 I 1 0 1 A A aai 11 1 41 F I 1 0 0 k aw 11 1 ti 7 m im 1 1 gitsis gitS 1 t ia 4 M Z it ai 0 1 1 Ss I 1 0 Y il 1 eg 1 SNi ak I 1 A eilf tny wa 1 I 1 Ui g 4 i s 4 i 0 A ala ao V i I 1 I 1 re reception 1 OKU ard 1 k 1 I V 41 1 A I 1 bl M usa t arili critics CS I 1 J I 1 n I 1 impo cimpl i ovea ove audio amplification a I 1 elevates Rad to ioto 16 t il 1 I iii rii glier 1 P plane la in e I 1 I 1 I 1 I 1 I 1 I 1 by JO JOHN N F fitrer ajder r I 1 in world d I 1 the alie cause cause ozithe of ithe the objections loni voiced fry ei ni musicians u against radio as a medium omu 0 musical entertainment has been simultaneously with the sallie stroke the ahe goat gnatt lof engineers in in jhb alie development of audio frequency amplification has been at attained this step sieli aas was accomplished by one who has made many note worthy contributions to the science oil of I 1 ra radio d lo 10 transmission and reception LL P donl the I 1 I 1 eminent emine rif physicist 1 and engineer pis patents cover such well known items as the alkaline 0 vapor tube better known as the eddlo n tube the col coil and many many gas content tubes used iq radio T the I 1 M frequency achievement Is he devel development 0 ament I 1 of anew system of such known as utilizing neav new electrical principles principle I 1 j ot 0 operation opu atlon the electrical phenomena utilized for the e energy transfer between the circuits in this system Is not to be found Ineil in existing stIng systems and Is the dev development of the inventor I 1 timbre kept constant I 1 the greatest 1 objection V voiced by musicians no against radio i as s a medium of conveying music has be enthat that the reproduction was not natural t that la Is it was either low pitched or high pitched that the rela iela tiong bip in amplitude of the fundamental and harmonic when reproduced was not the same RH aa that of the signal when transmitted into the microphone A variance ance in this r relationship elation ship changes the timbre of the sound and a soprano sounds founds like a contralto anda and a violin like a cello they also claimed that I 1 due consideration was not accorded by the receiver engineers to the electrical laws and physical laws pertain ing in to the conversion of sound into ele energy and the reception of this electrical energy bifid and its re back into sound must clars agreed hat bcd that when these laws are given consideration and the proper relationship maintained between buvee fhe fundamental lind and the 04 0 overtone fre re iuen quen clid clea the reproduction in the tha home of the fan will be altu natural tal impartial amplification aaion thin pew new system fulfills the requirements menis and consequently nullifies the objections the frequency range of the coupling units Is from 87 to 10 WO cycles alva alja ft a practically flat curve be iwen between 80 and cycles this amplitude relation relationships sh alps between the 66 frequencies of a complex wave this band will be retained without any aay accentuation or in other words it if a soprano sang a 1200 1206 cycle note which contal contained nei for the sake pt of ment me nt the third fifth hath and seventh harmonies harmonics with amplitude relations relationship bli of respectively 80 8 5 an and P 2 per cent of the funda fundamental menial they would be amplified uniformly and the amplitude of I 1 the fundamental and the hani harmonics would vary varv W in th the saie same proportion this would make possible natural reproduction if the fifth and seventh harmonies harmonics were viere the timbre of the sopranos voice would be altered and the reproduction would not be natural a another salient feature I 1 of this new system Is the minimization of phase angle abigle distortion in the coupling unit and tube combinations this form of distor distortion Is bert very seldom considered d in ta designor design of the average audio frequency amplifier and la Is extensively present in many cases how system works work the operating principle of this new system 01 of f al audio adl 0 f arl frequency e benci amplification la the attainment of energy enera transfer through a medium of balanced electro magnetic coupling rod and capacc dative coupling a system dissimilar to existing systems of audio frequency frequez cy amplification the SY system am Is na onos cil lating and adaptable to average conditions without ut necessitating any special equipment the standard tubes used for audio amplification ire atre the design of the units unit comprising an afi individual unit differ as much physically from convent conventional faubio V audio frequency aldoes as does the principle of operation fromang fro from many any conventional convention Rl system the balance between the electromagnetic electro magnetic ling and the coupling Is aut automatic matle within each unit asto as to frequency quiency and 4 1 amon amount fit of power passed into the system |