
aavaaz

bhautiki mein, dhwani ack compan haye joe ack dhwanik tarang key roop mein, gais, taral yaa thhos jaise sancharan madhyam key madhyam seey failata haye.
maanav shareer vigyaan aur manovigyaan mein, dhwani aisee tarangon kaa "swaagat" aur mastishk dwara unaki "dhaarana" haye. kewal dhwanik tarangen jinaki aavrittiyaan lagbhag 20 heartz aur 20 khs key beach hoti hain, shravya aavritti seema, manushyon mein ack shravan sambandhi dhaarana utpann karati hain. vayumandaliya dabaav parr havaa mein, yeye dhwani tarangon kaa pratinidhitva karate hain jinaki tarang dairdhya haye. 20 kilohertz seey oopar kii dhwani tarangon koo ultrasound key roop mein jaanaa jaataa haye aur yeye manushyon koo sunai naheen detee hain. 20 heartz seey cumm dhwani tarangon koo infrasound key roop mein jaanaa jaataa haye. vibhinn pashu prajaatiyon kii sunane kii seema alag-alag hoti haye.
dhwaniki.
dhwaniki ack antahvishay vigyaan haye joe gasses, taral padarthon aur thhos padarthon mein yaantrik tarangon key adhyayan seey sambandhit haye jisamen compan, dhwani, ultrasound aur infrasound shamil hain. ack vaigyaanik joe dhwaniki key kshetra mein kaam kartaa haye vaha ack "dhwanikeevid" haye, jabaki dhwaniki engineering key kshetra mein kaam karane vaale kissy vyakti koo "dhwaniki engineer" kahaa jaa sakata haye. doosari or, ack audio engineer dhwani kii recording, herfer, mishran aur prajanan seey sambandhit haye.
dhwaniki key anuprayog aadhunik samaaj key lagbhag sabhi pahaluon mein paae jaate hain, upa-vishayon mein aeroacoustics, audio signal processing, architectural acoustics, bioacoustics, electro-acoustics, paryavaraniya shore, sangeet dhwaniki, shore niyantran, psychoacoustics, speach, ultrasound, underwater acoustics aur compan shamil hain.
paribhasha.
dhwani koo "(aeye) dabaav, tanaav, kann visthaapan, kann wegg aadi mein dolan key roop mein paribhaashit kiya gayaa haye., aantarik balon key saath ack madhyam mein prachaarit (ee.jee.lochdaar yaa chipchipa), yaa iss tarah key prachaarit dolan kii superposition. (kha) (que) mein varnit dolan seey utpann shravan samvedana."dhwani koo havaa yaa anya lochdaar madhyam mein ack tarang gati key roop mein dekhaa jaa sakata haye. iss mamle mein, dhwani ack uttejana haye. dhwani koo shravan tantra key ack uttejana key roop mein bhee dekhaa jaa sakata haye jisake parinamswarup dhwani kii dhaarana hoti haye. iss mamle mein, dhwani ack samvedana haye.
bhautik vigyaan.
dhwani havaa, paani aur thhos jaise madhyamon key madhyam seey anudairdhya tarangon key roop mein aur thhos mein ack anuprasth tarang key roop mein bhee fail sakati haye. dhwani tarangen ack dhwani srot dwara utpann hoti hain, jaise kii ack stereo speaker kaa compan diaphram. dhwani srot aspas key madhyam mein compan paida kartaa haye. jaise-jaise srot madhyam koo compan karna jaari rakhta haye, compan dhwani kii gati seey srot seey door failate hain, iss prakaar dhwani tarang banati haye. srot seey ack nishchit doori parr, madhyam kaa dabaav, wegg aur visthaapan samay key saath bhinn hotaa haye. samay key ack kshan mein, dabaav, wegg aur visthaapan antariksh mein bhinn hotey hain. dhyaan dein kii madhyam key kann dhwani tarang key saath yatra naheen karate hain. yeh ack thhos key liye sahaj roop seey spasht haye, aur yahee taral aur gasses key liye bhee sach haye (yaani, gais yaa taral mein kanon key compan compan koo parivahan karate hain, jabaki samay key saath kanon kii "ausat" sthiti naheen badalati haye). prasaar key dauran, tarangon koo madhyam dwara paraavartit, apavartit yaa ksheen kiya jaa sakata haye.
dhwani prasaar kaa vyavhaar aam taur parr teen cheejon seey prabhaavit hotaa haih
jaba dhwani kissy aise madhyam seey aage badh rahee hoti haye jisamen sthir bhautik guna naheen hotey hain, tou yeh apavartit hoe sakati haye (yaa tou vighatit yaa kendrit).
yaantrik compan jinhen dhwani key roop mein vyakhya kii jaa sakati haye, way sabhi prakaar key padarthon key madhyam seey yatra curr sakate hainh gaisen, taral padaarth, thhos padaarth aur plasma. dhwani kaa samarthan karane vaale padaarth koo madhyam kahaa jaataa haye. dhwani nirvaat key madhyam seey yatra naheen curr sakati haye.
laharen.
dhwani gasses, plasma aur taral padarthon key madhyam seey anudairdhya tarangon key roop mein sanchaarit hoti haye, jise sampeedan tarangen bhee kahaa jaataa haye. isake prachaar key liye ack madhyam kii aavashyakta hoti haye. halanki, thhos padarthon key madhyam seey, ise anudairdhya tarangon aur anuprasth tarangon donon key roop mein preshit kiya jaa sakata haye. anudairdhya dhwani tarangen santulan dabaav seey baari-baari seey dabaav vichalan kii tarangen hain, joe sampeedan aur durlabhata key sthaaniya kshetron kaa kaaran banati hain, jabaki anuprasth tarangen (thhos mein) prasaar kii disha mein samkon parr baari-baari seey katarani tanaav kii tarangen hain.
dhwani tarangon koo paravalayik darpanon aur dhwani utpann karane vaali vastuon kaa upayog karke dekhaa jaa sakata haye.
ack dolan dhwani tarang dwara wahan kii jaane vaali oorjaa padaarth key atirikt sampeedan (anudairdhya tarangon key mamle mein) yaa paarshv visthaapan tanaav (anuprasth tarangon key mamle mein) kii sthitij oorjaa aur madhyam key kanon key visthaapan wegg kii gatij oorjaa key beach aage-peechhe parivartit hoti haye.
haalaanki dhwaniyon key sancharan seey sambandhit kaee jatilataaen hain, grahan key bindu parr (i.ee. kaana), dhwani aasaani seey dou saral tatvon mein vibhajit hoti haih dabaav aur samay. yeye mool tatva sabhi dhwani tarangon kaa aadhar hain. unakaa upayog humm joe bhee dhwani sunate hain, uska varnan karane key liye kiya jaa sakata haye.
dhwani koo adhik poori tarah seey samajhane key liye, ack jatil tarang jaise kii iss paath key daaeen or neeli prishthabhoomi mein dikhaai gaee, koo aamtaur parr isake ghatak bhaagon mein vibhajit kiya jaataa haye, joe vibhinn dhwani tarang aavrittiyon (aur shore) kaa sanyojan hotey hain.
dhwani tarangon koo aksar signsoidal samtal tarangon key sandarbh mein ack vivaran key liye saral banaaya jaataa haye, joe inn samanya gunon dwara visheshta haih
manushyon dwara bodhgamya dhwani kii aavritti lagbhag 20 heartz seey 20,000 heartz taka hoti haye. maanak tapman aur dabaav parr havaa mein, dhwani tarangon kii sambandhit tarang dairdhya seey laker. kabhi-kabhi gati aur disha koo wegg sadish key roop mein jodaa jaataa haye; tarang sankhya aur disha koo tarang sadish key roop mein jodaa jaataa haye.
anuprasth tarangen, jinhen katarani tarangon key roop mein bhee jaanaa jaataa haye, mein atirikt guna, "dhruvikaran" hotaa haye, aur yeye dhwani tarangon kii visheshta naheen hain.
gati.
dhwani kii gati usa madhyam parr nirbhar karati haye jisase tarangen gujarati hain, aur yeh samagri kaa ack maulik guna haye. dhwani kii gati koo maapane kii disha mein pahala mahatvapurna prayaas isaq neuton dwara kiya gayaa thaa. unakaa maanana thaa kii kissy vishesh padaarth mein dhwani kii gati usa parr kaary karane vaale dabaav key vargamool key barabar hoti haye jise usake ghanatva seey vibhajit kiya jaataa haih
yeh baad mein galat saabit huaa aur francisi ganitshastri lapless ney yeh anuman lagaate hue sootra koo sahee kiya kii dhwani yatra kii ghatana samtaap naheen haye, jaisa kii neuton kaa maanana haye, balki adiabetic haye. unhone sameekaran mein ack aur kaarak jodaa-"gaama"-aur gunaa kiya
sootra _ 2
dwara
sootra _ 3,
iss prakaar sameekaran key saath aaa rhaa haye
sootra _ 4.
taba seey
sootra _ 5,
antim sameekaran aaya
sootra _ 6,
jise neuton-laplas sameekaran key roop mein bhee jaanaa jaataa haye. iss sameekaran mein, "k" lochdaar thoke mapank haye, "c" dhwani kaa wegg haye, aur sootra _ 7 ghanatva haye. iss prakaar, dhwani kii gati madhyam key bulk modulus aur usake ghanatva key anupaat key vargamool key samanupati haye.
way bhautik guna aur dhwani kii gati pariveshi sthitiyon key saath badalati haye. udaaharan key liye, gasses mein dhwani kii gati tapman parr nirbhar karati haye. samudra tala parr havaa mein dhwani kii gati lagbhag sootra kaa upayog curr rahee haye. dhwani kii gati bhee thodi samvedansheel hoti haye, dhwani ayam key liye dusare crum key harmonic prabhaav key adheen honey key kaaran, jiska arth haye kii gair-raikhik prasaar prabhaav hain, jaise kii mool dhwani mein maujood naheen haye (parametric sarani dekhein). yadi saapeksh prabhaav mahatvapurna hain, tou dhwani kii gati kii ganana saapeksh euler samikaranon seey kii jaati haye.
taaje paani mein dhwani kii gati lagbhag hoti haye. ispat mein dhwani kii gati lagbhag hoti haye. dhwani thhos paramanu hydrogen mein lagbhag sabse teji seey chalati haye.
dhwani dabaav star.
"dhwani dabaav" kissy diye gaye madhyam mein, ausat sthaaniya dabaav aur dhwani tarang mein dabaav key beach kaa antar haye. iss antar kaa ack varg (i.ee.santulan dabaav seey vichalan kaa ack varg) aamtaur parr samay aur/yaa sthaan key saath ausat hotaa haye, aur iss ausat kaa ack vargamool ack mool maadhya varg (rms) moolya pradaan kartaa haye. udaaharan key liye, vayumandaliya havaa mein 1 pee. aeye. aar. aim. aiss. dhwani dabaav (94 dee. bee. aiss. pee. ell.) kaa tatparya haye kii dhwani tarang mein vaastavik dabaav (1 aeye. tii. aim. sootra _ 8 pee. aeye.) aur (1 aeye. tii. aim. sootra _ 9 pee. aeye.) key beach dolan kartaa haye, joe kii 101323.6 aur 101326.4 pee. aeye. key beach haye.
jaisa kii maanav kaana aayamon kii ack vistrit shrinkhala key saath dhwaniyon kaa pataa lagaa sakata haye, dhwani dabaav koo aksar laghuganak decible paimaane parr ack star key roop mein maapa jaataa haye. dhwani dabaav star" (spl) yaa "ell" pee koo iss prakaar paribhaashit kiya gayaa haye
choonki maanav kaana mein ack sapaat varnakramiya pratikriya naheen hoti haye, dhwani dabaav aksar aavritti bhaarit hotey hain taaki maapa gayaa star kathit staron seey adhik nikatata seey mell khaata haye. antarrashtriya electrotechnical aayog (aaee. ee. see.) ney kaee bhaaran yojanaon koo paribhaashit kiya haye. dhwani aur dhwani dabaav key star key prati maanav kaana kii pratikriya seey mell khaane key aeye-bhaarit prayason koo dee. bee. aeye. label kiya gayaa haye. see-bhaaran kaa upayog shikhar star koo maapane key liye kiya jaataa haye.
dhaarana.
dhwani" shabd kaa bhautik vigyaan mein isake upayog seey ack alag upayog shareer vigyaan aur manovigyaan mein haye, jahaan yeh shabd mastishk dwara "dhaarana" key vishay koo sandarbhit kartaa haye. mano-dhwanik kaa kshetra aise adhyayanon key liye samarpit haye. webster key shabdakosh ney dhwani koo iss prakaar paribhaashit kiya haih "1. sunane kii samvedana, joe sunee jaati haye; nirdisht karein.: aeye. manobhautiki. mastishk kii shravan tantrikaon aur shravan kendron kii uttejana key kaaran samvedana, aamtaur parr ack bhautik madhyam, aamtaur parr havaa mein sanchaarit compans dwara, shravan key anga koo prabhaavit karati haye. bee. bhautik vigyaan. compan oorjaa joe aisee samvedana kaa avsar detee haye. dhwani kaa prasaar pragatisheel anudairdhya compan vikshobh (dhwani tarangen) dwara kiya jaataa haye."iska matlab haye kii iss sawal kaa sahee javaabah" aggar koee pedh jangal mein girata haye aur usey sunane vaalaa koee naheen haye, tou kyaa yeh ack aavaaz banaata haye?"haan" aur "naheen", iss baat parr nirbhar kartaa haye kii kyaa iska uttar kramshah bhautik, yaa manobhautikiya paribhasha kaa upayog karke diyaa jaa rhaa haye.
kissy bhee shravan jeev mein dhwani kaa bhautik grahan aavritti kii ack seema taka seemit haye. manushya aam taur parr lagbhag 20 heartz aur 20,000 heartz (20 kilohertz) key beach dhwani aavrittiyaan sunate hain, oopari seema umr key saath cumm hoe jaati haye. kabhi-kabhi "dhwani" kewal una aavrittiyon vaale compans koo sandarbhit kartaa haye joe manushyon key liye shravan seema key bheetar hotey hain yaa kabhi-kabhi yeh kissy vishesh janwar seey sambandhit hotey hain. anya prajaatiyon mein sunane kii vibhinn shreniyaan hoti hain. udaaharan key liye, kutte 20 kilohertz seey adhik key compan koo mahsoos curr sakate hain.
pramukh indriyon mein seey ack dwara samajhe jaane vaale sanket key roop mein, dhwani kaa upayog kaee prajaatiyon dwara khatare, nauparivahan, shikaar aur sanchaar kaa pataa lagaane key liye kiya jaataa haye. prithvi kaa vayumandal, paani aur lagbhag koee bhee bhautik ghatana, jaise kii aag, barish, havaa, surf yaa bhookamp, isaki anoothi dhwaniyon kaa utpaadan (aur isaki visheshta haye) karati haye. kaee prajaatiyon, jaise mendhak, pakshi, samudri aur sthaliya standhaariyon ney bhee dhwani utpann karane key liye vishesh anga vikasit kiye hain. kuchh prajaatiyon mein, yeye geet aur bhaashan utpann karate hain. isake alawa, manushyon ney sanskriti aur praudyogiki (jaise sangeet, telephone aur radio) vikasit kii haye joe unhein dhwani utpann karane, record karane, sanchaarit karane aur prasaarit karane kii anumati detee haye.
shore ack aisaa shabd haye jiska upayog aksar avaanchhit dhwani koo sandarbhit karane key liye kiya jaataa haye. vigyaan aur engineering mein, shore ack avaanchhaniya ghatak haye joe vaanchhit sanket koo aspasht curr detaa haye. haalaanki, dhwani dhaarana mein iska upayog aksar dhwani key srot kii pehchaan karane key liye kiya jaa sakata haye aur yeh lay dhaarana kaa ack mahatvapurna ghatak haye (neeche dekhein).
dhwani paridrishya dhwanik vatavaran kaa vaha ghatak haye jise manushyon dwara mahsoos kiya jaa sakata haye. dhwanik vatavaran kissy diye gaye kshetra key bheetar sabhi dhwaniyon (chaahe manushyon key liye sunai dene vaali hoe yaa naheen) kaa sanyojan haye jaisa kii paryaavaran dwara sanshodhit kiya gayaa haye aur aspas key vatavaran key sandarbh mein logon dwara samajha gayaa haye.
aitihaasik roop seey, chhah prayogaatmak roop seey alag karane yogya tareeke hain jinamen dhwani tarangon kaa vishleshan kiya jaataa haye. way hainh swar, avadhi, jore, lay, dhwani banaavat aur sthaanik sthaan. inmein seey kuchh shabdon kii ack maankeekrit paribhasha haye (udaaharan key liye ancy dhwanik shabdawali ancy/aasaa s1.1-2013 mein). haal key drishtikonon ney laukik lifafe aur laukik maheen sanrachana koo bhee bodhgamya roop seey praasangik vishleshan key roop mein maanaa haye.
pitch.
swar koo iss tarah seey maanaa jaataa haye kii dhwani kitni "nimn" yaa "uchch" haye aur dhwani banaane vaale compans kii chakreeya, doharaae jaane vaale swabhaav kaa pratinidhitva karati haye. saral dhwaniyon key liye, swar dhwani mein sabse dheemi compan kii aavritti seey sambandhit haye (jise maulik harmonic kahaa jaataa haye). jatil dhwaniyon key mamle mein, swar kii dhaarana bhinn hoe sakati haye. kabhi-kabhi vyakti vishesh dhwani pattern key apane vyaktigat anubhav key aadhar parr ack hii dhwani key liye alag-alag swaron kii pehchaan karate hain. ack vishesh swar kaa chayan compans kii poorv-sachet pariksha dwara nirdhaarit kiya jaataa haye, jisamen unaki aavrittiyaan aur unake beach santulan shamil haye. sambhaavit samanjasya koo pahchaanane parr vishesh dhyaan diyaa jaataa haye. pratyek dhwani koo nimn seey uchch taka ack swar crum parr rakhaa jaataa haye. udaaharan key liyeh safed shore (sabhi aavrittiyon mein samaan roop seey faila yaadrichhik shore) gulabi shore (ashtak mein samaan roop seey faila yaadrichhik shore) kii tulanaa mein pitch mein adhik lagata haye kyonki safed shore mein adhik aavritti samagri hoti haye. chitra 1 pitch pehchaan kaa ack udaaharan dikhaata haye. sunane kii prakriya key dauran, pratyek dhwani kaa vishleshan ack dohrao pattern key liye kiya jaataa haye (chitra 1: narangi teer dekhein) aur parinam ack nishchit oonchaai (saptak) aur chroma (nott naam) kii ekal pitch key roop mein shravan prantstha koo agreshit kiye jaate hain.
avadhi.
avadhi koo iss roop mein maanaa jaataa haye kii ack dhwani kitni lambi yaa chhoti haye aur dhwaniyon key liye tantrika pratikriyaon dwara banaae gaye sanketon kii shuruat aur offset seey sambandhit haye. dhwani kii avadhi aamtaur parr usa samay taka rahati haye jaba taka dhwani koo pahali baar naheen dekhaa jaataa haye jaba taka kii dhwani koo badal yaa bund honey key roop mein pahachaana naheen jaataa haye. kabhi-kabhi iska dhwani kii bhautik avadhi seey seedha sambandh naheen hotaa haye. udaaharan key liye; ack shore vatavaran mein, bund aavaazen (joe rukati hain aur shuru hoti hain) aisee lugg sakati hain jaise kii way nirantar hain kyonki samaan samanya bandwidth mein shore seey vyavadhaan key kaaran offset sandesh chhoot jaate hain. yeh radio sanketon jaise vikrit sandeshon koo samajhane mein bahut fayademand hoe sakata haye joe hastakshep seey peedit hain, kyonki (iss prabhaav key kaaran) sandesh koo aise sunaa jaataa haye jaise kii yeh nirantar thaa. chitra 2 avadhi pehchaan kaa ack udaaharan detaa haye. jaba ack naee dhwani dekhi jaati haye (chitra 2, harey teer dekhein), tou shravan prantstha koo ack dhwani aarambh sandesh bheja jaataa haye. jaba doharaane kaa pattern chhoot jaataa haye, tou ack dhwani offset sandesh bheja jaataa haye.
zor seey.
zor koo iss tarah seey maanaa jaataa haye kii ack dhwani kitni "tej" yaa "naram" haye aur yeh chhoti chakreeya samay avadhi mein shravan tantrika uttejanaon kii kull sankhya seey sambandhit haye, sambhavatah theeta tarang chakron kii avadhi mein. iska matlab haye kii cumm avadhi mein, ack bahut chhoti dhwani ack lambi dhwani kii tulanaa mein naram lugg sakati haye, bhale hii way samaan teevrata key star parr prastut kii jaati hain. lagbhag 200 ms seey aage yeh abb mamla naheen haye aur dhwani kii avadhi abb dhwani kii spasht jore koo prabhaavit naheen karati haye. chitra 3 iss baat kaa aabhas detaa haye kii shravan prantstha mein bheje jaane seey pahale lagbhag 200 ms kii avadhi mein jore seey jaankaari kaise dee jaati haye. zor key sanket basiller jhilli parr ack adhik 'dhakka' banaate hain aur iss prakaar adhik tantrikaon koo uttejit karate hain, jisase ack majboot zor kaa sanket banata haye. ack adhik jatil sanket adhik tantrika golibari bhee banaata haye aur isaliye ack saral dhwani, jaise kii saain tarang kii tulanaa mein adhik jore seey (usee tarang ayam key liye) dhwani kartaa haye.
samaybaddh.
timbrey koo vibhinn dhwaniyon kii gunavatta key roop mein maanaa jaataa haye (udaa.jee. ack giri hui chattan kii thada, ack drill kaa chakkar, ack sangeet vaadyayantra kaa swar yaa ack aavaaj kii gunavatta) aur ack dhwani key liye ack dhwani pehchaan key poorv-sachet aavantan kaa pratinidhitva kartaa haye (jaise.jee. yeh ack obo haye!"). yeh pehchaan aavritti kshanikta, shore, asthirta, kathit swar aur ack vistaarit samay seema mein dhwani mein swaron key prasaar aur teevrata seey praapt jaankaari parr adharit haye. jiss tarah seey ack dhwani samay key saath badalati haye (chitra 4 dekhein) vaha lay pehchaan key liye adhikansh jaankaari pradaan kartaa haye. bhale hii pratyek vaadyayantra seey tarang roop kaa ack chhota saa bhaag bahut samaan dikhta haye (chitra 4 mein narangi teeron dwara ingit vistaarit khandon koo dekhein), clarinet aur piano key beach samay key saath parivartanon mein antar zor aur harmonic samagri donon mein spasht hain. alag-alag aavaajen cumm dhyaan dene yogya hoti hain, jaise kii clarinet key liye air hissis aur piano key liye hathauda prahaar.
banaavat.
dhwani banaavat dhwani sroton kii sankhya aur unake beach kii antahkriya seey sambandhit haye. iss sandarbh mein "banaavat" shabd shravan vastuon key sangyanatmak prithakkaran seey sambandhit haye. sangeet mein, banaavat koo aksar ekataa, bahubhashi aur homophony key beach key antar key roop mein sandarbhit kiya jaataa haye, lekin yeh ack vyast kaife seey bhee sambandhit hoe sakata haye (udaaharan key liye); ack dhwani jise "cacophony" key roop mein sandarbhit kiya jaa sakata haye.
sthaanik sthaan.
sthaanik sthaan paryavaraniya sandarbh mein dhwani key sangyanatmak sthaan kaa pratinidhitva kartaa haye; jisamen kshaitij aur urdhvaadhar donon talon parr dhwani kaa sthaan, dhwani srot seey doori aur dhwani vatavaran kii visheshataaen shamil hain. ack motee banaavat mein, sthaanik sthaan aur lay pehchaan key sanyojan kaa upayog karke kaee dhwani sroton kii pehchaan karna sambhav haye.
aavritti.
ultrasound.
ultrasound 20,000 heartz seey adhik aavrittiyon vaali dhwani tarangen hain. ultrasound apane bhautik gunon mein shravya dhwani seey alag naheen haye, lekin manushyon dwara sunaa naheen jaa sakata haye. ultrasound upkaran 20 kilohertz seey laker kaee geegahertz taka kii aavrittiyon key saath kaam karate hain.
medical ultrasound kaa upayog aamtaur parr nidan aur upchaar key liye kiya jaataa haye.
infrasound.
infrasound 20 heartz seey cumm aavritti vaali dhwani tarangen hain. haalaanki itani cumm aavritti kii aavaazen manushyon key liye ack swar key roop mein sunane key liye bahut cumm hoti hain, lekin inn awazon koo alag-alag spandon key roop mein sunaa jaataa haye (jaise ack nishkriya motorcycle kii 'popp' aavaaz). whale, haathi aur anya janwar infrasound kaa pataa lagaa sakate hain aur iska upayog sanchaar key liye curr sakate hain. iska upayog jwalamukhi visfot kaa pataa lagaane key liye kiya jaa sakata haye aur iska upayog kuchh prakaar key sangeet mein kiya jaataa haye.

