Show I The Herald Journal Logan Utah Monday July 11 1968-P- age B Aggressive approach developed to cancel noise - WASHINGTON (UPI) Taking a cue from children vho damp their handsover their ears to block out parents' aeoldlng efforts to reduec noise hare fane focnaed on tiring to muffle unwanted sounds hr mini barrier and insulation But now sdentiata are on the attack uaing noiee to fight noise “Ia utira noise cancellation run hare to make a noise Just as loud as the noise ran are trying to caned What makes it work Is that the sound waves are mirror images of each other" says Larry Eriksson an acoustic researcher Eriksson likens the situation to a lake w! the crest of a ware traveling in one direction meets the trough of an identical ware heading the opposite direction "creating a smooth surface" The concept of noise cancellation is not new In the 1110s a German engineer obtained a patent for a system to caned unwanted sound by rib generating out of with source the phase degrees However Eriksson says such systems were not practied because they could not adapt to changes in the noise source or surrounding environment "These changes occur very rapidly sod you really need computers to constantly monitor the efficacy of the sound cancellation system" says the audiologist who works for Nelson Industries of Stoughton WIs The advent of microcomputers and an improved understanding of how to use the new technology has enabled active noise control to become a commercial reality over the past two years Active noise cancellation fa currently used to quiet irritating sounds from fans ducts industrial pumps medical equipment and airplanes Systems are also being devised to reduce the noise of automobile exhausts and to create "quiet spaces" in certain work areas Researchers are also trying to come up with ways to quiet the sound of sirens for people inside ambulances and to insulate entire rooms from outside noise The easiest sort of noise for such systems to caned fa sound from a repetitive source The pitch equivalent to A above middle C on a piano "fa the upper end of where the produets work" Eriksson said Passive noise control which restricts the flow of sound waves with mechanled devices such as mufflers tubes baffles and acoustic filters works more efficiently than active control on sounds But passive centre! fa a method of quieting low frequency noise use the equipment to silence the luge waves fa cumbersome and takes up too much space Meet active noise control systems consist of a mkrophons to detect the bothersome microchips to process the information and electronically driven loudspeakers to generate sound waves to cancel the some Under current technology the anti-noigenerally fa broadcast in a somewhat confined area such as a dnet or transmitted through earphones placed on a person's head Businesses using such systems to caned out noises from large fans and ventilation ducts n include foundries plastic processors sad facilities “Generally most of the problem with fndustri-a-l fans fa the noise they cause ia the surrounding inntty" Eriksson said "Large fans are located on the roof and can produce Ugh to a mile sound levels often audible a half-mifrom the away plant" "la some eases noise can he damaging to the hearing Ia many other eases it u merely annoymg or bothersome But if it fa keeping you from sleeping at night it certainly fa detrimental to the qusbtyof life and health fame long run" A medical netting may be the place where many people will hare thdr first encounter with active noise eontroL "It sounds like a jackhammer and it sometimes goes slower and sometimes faster The ti cy :i high-pitch- ed K se ii ! i indn-oratio- le I noise fa very loud and you canl predict when it’s hare been less traumatic A firm called Noiee Cancellation Technologies going to go on or off” says Susan Shapiro-BikoMedical recent in a her describing experience diagnostic Systems plans te install a device to device called a magnetic resonance imaging reduce noise at an outpatient MRI center in Houston this summer The anti-noifrequency "You’re in a tunnel and if you're at all will he transmitted to patients via headphones claustrophobic the noise fa going to increase and the resulting silence will be fitted with relaxing musk your fears" she says Michael Parrella chairman of NCT Medical The source of the MRI's thumping eound fa a 12000-poun-d superconducting magnet Systems said his Columbia Md firm fa also used to make moving images of a developing equipment designed to caned vibraabout a tion wares in a method similar to noise a body procedure during lasting jtatientis cancellation Such technology could help inhad been crease the accuracy of very oensitire equipment If the MRI used on Shapiro-Bikoequipped with active noise cancellation device such as electron microscopes where even slight her examination for possible back injuries might vibrations can affect results ff i l a se i I low-pitch- ff Lawn mowing doesn’t have to be evocative ritual - “Few thiaga are harder to put up with than the annoyance of a example " —MukTwiila Lawns Velvety Rebekoh lush sweeps of dark green iRIpiso that make the outside look as good as a new carpet does the inside I suspect that a lot of us tuned in to the tennis matches at Wimbleton of all sorts was seen as suspect but lawn simply for the pleasure at looking at thooe mowers were definitely too dangerous for a mere examples of England's perfect turf We can’t grow lawns like that here we haven’t the climate for it But that certainly doesn’t stop us from trying Mowing the lawn fa one of summer’s most evocative rituals The drone of the mower lulls children to sleep against thdr wills while the to stretch on forever Of all the ojeeni the fragrance of fresh cut ! love one the the best I I grass I wish someone could capture that scent and’ Bif hark tft -- hnitiMvwi ii L female Childish convictions dk hard and I still don't mow lawns Frankly unlike the soothing whir of hand mowers the nitary roar drives sre as far away as possible The stench of gasoline and the ear shattering noise fa too mock the Uds and I wait until the batik fa over before we run barefoot across the grass and enjoy the delicious about from I’ve the tastily imowing lawn since he expert Vabtre'floid'Btill actually enjoyslhe process so & MflBm oc pfifli cmb pi with the sun warm on rnynead if it was a I decided this fa the sortoc person to talk to perfume I’d wear it Straightaway I asked tf there fa any way to But getting those dippings clipped off isn’t make the job go tester: Mow more often he always i so much fun In the household I grew up promptly replied with a sneaky smile Knowing in girts weren’t expected to mow lawns most of us don’t mow lawns for the sheer joy of ft although we were expected to do laundry which when there’s a free hour or two I snapped back I always thought rather a short deal Machinery something about getting reaL nwr nu i 4 But he insisted he wasn’t kidding The longer the gram grows between cuttings the slower the mower will cut Those delightful retirees who mow their lawns twice a week are able to walk along at a pretty fast clip What if you dontfwdl then gentle reader you must resign yourself with heavenly patience to taking almost twice as long Should you save the dfanugs? We do because they are one of our favorite mulches but it does don’t The save fertilising the lawn a bit if jou often fa cut to thin again enough that the clippings are very short half an inch or less That way they are absorbed very quickly and don’t form a smothering thatch that Mocks air and water Speaking of fertilising how often should it be done? At least three times a year — once in wry early spring once in early summer and again in tell Fanatics and golf course keepers fertilise much more often however Many lawmproud gardeners will put pn an extremely light dusting every tiara they mow or every other i time Which goes to prove that some people will do almost auvthini te look food As for the mowers tnemsdres and an their attendant frustrations there seems te be some sort of law (ft the universe in operation here The more often one spends time with one’s mower Ul turn on you and give often the horrid to get it to start you a coronary children they behave better when they feel included in the family’s ftm At least that'! the way ours seems to he motivated Those of us who firmly hdkre that all mechankal objects are jnhamtod by malignant spirits find a great deal of affirmation of our beliefs from lawnmowers and all thdr Un — the edgers the shredders and even the archs of the clan — automobiles The leu attention they reciere the worst they behave Every mower has it's own preferences of course and it fa up to you the loogsufferlng owner to study diligently how to Mease ft Some mowers like to be groomed incessantly especially on their undersides Othsrs expect their spark dugs to be cleaned constantly or enjoy hiving thdr caiborators fiddled Every Imowcr fa deferent and ft to up to mrto grant it's withft The retard fa a mower that purrs Into life with the first pull of it’s cord never chokes on long ass and never spits out stones at the dog the proud owner of such a machine almost makes it all worth while doesn't it? Editor's nolo: Kabafcah Alpha wrifos a wookiy pardoning column for The Harold Journal ‘Thesaurus of Slang9 can be joy to connoisseur of words “breasts" among them such Is the English It u a Has ft lost its Chaucerian vigor? Has the formation of formulations as kajoobies hubbies bazooms torpedoes baxongas maracas and front bumpers The list of words for the male organ fa even more astonishing One has to wonder who thinks up these things I cheered on entries in our field of immediate interest A writer you should know fa a scribbler scribe scratches word dinger pen pusher legman stringer cub news hen and knight of the plume I thought we were wretches of merely the press A newspaper I regret to say fa a rag a scandal sheet a bladder a Mat a snitch sheet and a fishwrapper News fa variously defined as info tie-i-n remarkable James Kilpatrick thesaurus If you were a crime novel and! province of science and by a reference A not so! technology? Say or a boogie man a Kojak book come has delightful just standard dictionary would deto hand from Facts on File fine term the for you: police "The Thesaurus of Slang" by officer In the Lewie's book Esther and Albert Lewin look under “police I know nothing of the authors and find such beyond what appears on the alternatives as cop fun slime book jacket He is a bull shamus county mounty screenwriter and novelist she grasshopper elbow finger fly is the author of seven aick geepo and hat rack the cookbooks They live in Los last of whom fa an officer Angeles Neither is a pro- directing traffic fessional kgomachist but they As you expect a vast have labored cheerfully far deal of might American tiang fa years to compile 150000 slang devoted to bodily functions words under 12000 headings sexual activity and the human Unlike standard dictionaries anatomy The thesaurus offers of slang their work is a true 60 words under the heading of new words become the sole of-ice- r” ler ink-stain- ed hook-u- p flash scoop poop skinny lowdown squib goulash and garbage A television set is the boob tube telly box flickering Hue d monster and parent One of the lengthier entries provides a choice of words having to do with liquor A sampling: hootch booxe care corn moonshine mountain sauce rotgut dew red-ey-e white lightning tiger milk pit Iron rat poison firewater fog cutter dog’s nose corpse reviver heu tap canned heat paint remover bug juice sheepdip swamp root sneaky pete goat hair and google eye Old Crow bourbon fa known as dirty bird I venture only one criticism of this absorbing collection and it has nothing to do with the work itself The publishers have come up with a hook that fa 11 inches tall The problem fa that most of us bookworms adjust our shelves for books Lewins thesaurus fa like eating peanuts It’s not easy to stop after a few entries A universal cumbers frogskins plasters smacks rutabagas dugs cartwheels Iron human experience involves going to the John rest room library facilities amenities comfort station sandbox Mffy bippy chamber of commerce gazoo the Andy Gump and the old soldier's home men) but maybe your local librarian could be talked into goggle one-eye- Browsing through the that range from $ inehes to 10V4 There’s no Mace to put an The thing won'tftt Otherwise this thesaurus fa a joy for the word lover I can’t honestly recommend it to the writer for it er costs 40 bucks (Mils dams fish singles skins berries bones deckers coconuts cu- n wr Company inexpensive $15 to $20 price range will do just as good a job as a heat detector in every room Borg said "The smoke detector is probaMy the best thing to come along in fire protection in a long time" Borg said Detectable levels of smoke develop in house fires long before detectable levels of fire Borg and Dever said Complaints have also centered on pressure tactics such as sales people showing pictures of burned bodies Borg quoted one woman as complaining to his office: “I can be a good mother without buying a $1700 fire protection system” Some sales people also were saying the system fa approved by the state fire marshal's office which Borg said fa something by law the office can not do ln some cases people said salesmen claimed they represented the local fire de officials in Salt Lake City for a Utah Fire Sathered Association meeting The stories were not about an official position of the association but consisted of statements from individual fire officials As to why there was no public statement from the association Borg said "We don't want to run them out of business or libel them if they are operating legally We just want the public to know they can ret adequate fire protection for a reasonable price You don't need to spend thousands of dollars" But with all the stories going around about the pressure tactics and the claims and the prices Borg said people were wondering if they should get involved with any fire safety equipment even smoke detectors “That’s the real he said Lisa Talbot who complained to Borg’s office echoed that pro-Me- statement t “I’m just totally confused" the Provo woman said "They (the heat detector sales repre- sentatives drawing com- plaints) might just hare a different idea” She purchased a $1400 set of smoke and heat detectora from Master Guard But when friends told her of media coverage of heat detectors she called a local fire official who advised her she had made an unnecessary purchase “Everybody's got me so confused I just said 'Come and take them out so I can think about it’" she said Master Guard took the equipment back Dorian Snell sun UiUwrm PfW Syndicate Editor's note: Johns Kilpatrick is a syndicated columnist who writes about writing SOW i PON 753 HOP ARTHURwi i tarn fet Jo Apt "the day before had turned away a salesman" offering the same type of equipment Mountain Safety offers Snell said Snell said he was always told to crawl out of a fire but the salesperson said to crouch “between (the level of the) door knob and the light switch" But Snell sud the fire safety people and officials he talked to said “the air there will burn your lungs and kill you quick" iii m rzn w-- x tfr isss5reie Wfca pm Fraud UefcbK Crocodile Pond— N PS) 7dMM uasnvKiviiNil) 7:20-9:2- 0 PHANTASM llm 7:10-9:1- 0 EDDIE MURPHY asa Capttaif 3Sn Main Prince Akcem discovers America TM-W- THE GREAT OUTDOORS (PO) 7(00-9:0- 0 STARTS FRIDAY DAMN Fri 1:07:00-9:0- 9 from ttEHMGTO Mountain Safety then called fire officials with questions He was told heat detectors were “almost totally unnecessary" He described part of the sales pitch he had received which included a secoi second detailing of mi fatalities in a house fire story concludes with the assertion that the deceased family IVSS Cimemft 3t TMUW Murray purchased a system 0 fnf&(S!ri!!ri) $0hdmn partment he sate The initial stories in the press in May came from fire lizards the investment One more word: Slang i has its place in prose com) tion and a happy place But be forewarned: Use slang with exceeding care and with a certain knowledge of your audience In serious composition it is better to avoid slang Otherwise your altogether readers may not grok you They may not savvy compy capeesh or fershtay They may not smell your coffee I mean they may not have your number You dig? 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