Show S P GRACE OF TELEPHONE COMBANI PERFORMS lS MIRACLES AT WEST HIGH HIGI The age of miracles cles returned to Salt Lake City recently A large crowd d sat spellbound and almost unbelieving in m the auditorium of of the West high las they samm sa sand and nd heard rd P Grace assistant vice nt t of the Bell Telephone Inc of New York gIve givar ar demonstration ahon of marvelous dis- dis CO eries in n pound transmission at a z public meet ig go g sponsored by the Utah Section of I ie e a American Institute of ol Electrical I If Mr Ir Gr ce had given such an e ex c a 1 f w hundred yeas vears rs e ago he probably vv t ild ld Id hive have been burned at atthe the stake i f to witchcraft lt Mr Ir Gra Grac Grace came to Salt Like Lake City through h the courtesy of President FR F FR FR R Reid of 1 he e a Mountain State States Telephone Telephone Tel ephone and Telegraph company The Tho Th crowd of interested spectators spectator saw the arti cial larynx with whIch the voiceless now can speak and an anthey they heard i 1 it used They hear the music of an orches- orches orchestra orchestra orchestra tra filtered with only certain tones tone being ed cd They hea bea 1 a a picture pass over overa a 1 wire to be at the receiving receiving mg ing end They hear the palpitations of th the heart of one of the audience magni- magni magnified fled fied They hear heu he ar 1 how ho the noise of the th movement o e a muscle muscio would sound were the hu bu ian n ear sensitive enough to detect it lt They hea d jazzy music inverted I They list ned to speech Inverted and then t tra to its understand understand- understandable understandable understandable I able form They The has hea 1 sp speech h scrambled into int an ble ible mass and then re- re reassembled reassembled assembled They heard a voice at one end of a short t telephone ephone line and waited sev- sev several veral eral seconds to hew hear it reproduced eed And finally they saw aw a demonstration demonstration bon tion in which music muse from a cabinet which Inch could no tb beard by the in- in u- u thence or the sub t of the tet et et ed edY Y f through a wire through one mans man's b body dy and into the subjects subject's brain bram ai- ai aired di direct red re-c re To prove that h he heard the music the subject of the c experiment beat time with his hands As A Mr l Grace was Bas as demonstrating I the device thereas there was as a roar through the room like a speeding tram train the sounds tremendously amplified coming com com- coming ing mg from the contraction in Mr Graces Grace's jaw as he bit his teeth together to- to together to together gether T They y came through a micro microphone microphone phone which picked ed d up tb the noise produced by th tho contraction of the muscles Mr Grace c a explained lam that this phe phe- phenomenon phenomenon phenomenon had e been discover discover- discovered discovered ed in m the lab laboratories and explained that it lt was a attributable to the fact that ear drum and surrounding tissues are made mado to act ct as one plate of the condenser ro re receiver ewer Clver the resulting vi- vi vibrations vi vibrations br of t o e ear drum being inter inter- interpreted inter j by th the bran brain as speech music or whatever w hate sounds were Vere I upon the o ginal transmitter Mr Ir Grace said sald that that the sounds could be betran betran I beI tran transmitted simultaneously to at least st three pars pors ns holding hand hands It will i ot of be long before you will go to a d dc etor tor when hen you have hwe heart he trouble an he s will mill place a special against your chest md and I listen Gr r ce said in m connection with the coon chon of heal heart t beats brots The I doctor will then get out a record of heart art bea beat which he thinks s is most like the sound so ind of Sours ours As soon ash ashe as h he th one which will lust just hat iW hat is 1 the th trouble trouble with Ith your h hart hal hea al t by comparing it lt with nth the records ad d by iy y a famous heart beart specialist l The artificial artificial lal hr larynx n nas was as domon d with the aid md of od a bellows The bellows s Mr Ir Gh Grace e said sald would take the place of the wind which would come from the lungs of the dumb per per- person person son on The words were formed by the lips and the tongue and the air reproduced reproduced reproduced the sound with the use of the artificial voice which much resembles I former Vice President Dawes tes fam- fam famous famous ous pipe You carry this voice around m in sour pocket Mr Ir Grade Grace Gra e said sald He told of one man of Virginia who ho after losing his voice Olce secured one of the artificial larynxes and returned to his work as a sale salesman man With the use of the a artificial artificial larynx a person lerson can speak across the continent by bv 1 telephone For For those these whose hose hose- vocal cords are paralyzed a synthetic sj lung has bee de doped Another i interesting phenomenon S mas the in burglar ala ms for safes Merely by dropping a penny on a steel surface surface similar to that of ofa ofa ofa a Vault a sound was vas set off hap li c a burglar burg alarm Mr l Grace Graces Grace's J demonstration of de- de delayed laved dc-laved laed speech was as particularly esting Speaking into a transmitter r rhe I hea he was a able to delay delivery eTY of sp speech ech to the loud speaker for four and one-half one seconds and also to cause at wilt will electrical echoes so that the words Were repeated repented one two t or three times This delayed speech has bas hasa basa hasa a practical application in m tr transatlantic transatlantic t nS lantic transmission preventing howl hosi- ho hosing howling 1 ing ng I 1 One of th the most amusing parts puts of the evening for for the cro crowd d was Mr l Grace scrambled s rambled speech illy all ll inverting it lt so that high notes note were low 10 and low 10 notes high The speech h was as then unintelligible But Buthe Buthe Buthe he sho showed cd that th t an electrical brain bram as ashe ashe ashe he called it Jt unscramble the sounds and t translate them into Eng Engi I lish In this scrambled r gibberish th the GALLY TWO S P GRACE GRACI ETC I words ef n spoken into the unscramble I I i ne nc ere v and camp cane out o 0 the loud speaker n as telephone com corn any I Mr Ir Grace explained that this scrambling of v s rd d cL made it possIble to send s by radio which ore are I j reI unintelligible t anyone except the listener at the tation which has re- re reI receiving s to unscramble the message c I While the lab atones employs persons and has an en annual budget of tit the discoveries that base Continue on page 8 Continued i from page a al 1 been abeen made have the telephone saved the compan company millions asaHe of asa and dollars dollar the public he 5 1 slid hundreds 1 telephone of He e explained how the th ini and the telephone loading cOil distance calls caBs possible repeater made long necessIty of he-a he without the heavy could mike m calls copp r wire Vue a almost m In cost both to e U user Er Now long company and to the made over wirL distance call calL are ar ordinary pm pin n iris T he said ald no n id i'd larger than the I I 11 Grace Grao nn t a of out that the de- de dew w V to tn a ne s ether to material a utta n g both I la products of the make PO possible e cone rue of the con con- t telephone th cable across lant c to supplement 1 I the radi n not n use Construction ox or o tae te t JC next y 3 n eJu r ted to start wn 4 s sf f |