Dancing Essay

1367 words - 5 pages

Voordele en beperkings van oorfone. Oorfone is maklik omdat mense dit kan opvou en dan daarmee reis. Dit kan gebruik word om ander mense te verhoed dat die aanhoor van die klank.Hulle kan ook 'n vlak van klank getrouheid groter as luidsprekers van 'n soortgelyke koste .Hoë gehalte oorfone kan 'n baie plat lae- frekwensie reaksie tot 20 Hz binne 3dB hoor Oorfone is ook nuttig vir speletjies wat gebruik 3D is omdat jy nie hoef bekommer te wees dat iemand jou gaan hoor nie.Alhoewel moderne oorfone is veral wereldwyd verkoop en gebruik word vir die luister na stereo -opnames sedert die vrystelling van die Walkman , is daar ' n subjektiewe debat oor die aard van hul voortplanting van stereo klank. Stereo opnames verteenwoordig die posisie van horisontale diepte leidrade ( stereo skeiding ) via volume en fase verskille van die klank in die vraag tussen die twee kanale. Wanneer die klanke van twee sprekers meng , skep hulle die fase verskil van die brein gebruik om rigting te spoor. Deur die meeste koptelefoon, omdat die links en regs kanale nie kombineer nie op hierdie wyse kan die illusie van die Phantom sentrum word beskou as verlore . Hard laat draai klanke sal ook eers net in een oor , eerder as van die een kant gehoor word . Gevare en volume oplossings Met behulp van oorfone op 'n voldoende hoë volume vlak kan tydelike of permanente gehoorverlies of doofheid veroorsaak word. Die hoof volume het dikwels om te kompeteer met die agtergrond geraas , veral in harde plekke soos die metro dryf, vliegtuie, en groot skares. Verlengde periodes van blootstelling aan hoë geluid druk geskep deur oorfone op 'n hoë volume -instellings kan skadelik wees maar een verhoor Deskundige het gevind dat " minder as 5 % van die gebruikers kies volume vlakke en luister gereeld genoeg te waag hoor verlies . Sommige vervaardigers van oorfone het probeer om die veiligheid wat beperk uitset volume of die gebruiker waarsku as gevaarlik volume is wat gebruik word in te voer . Luister na musiek oor oorfone terwyl die uitoefening kan gevaarlik wees. Bloed kan herlei word vanaf die ore na die ledemate verlaat van die binne-oor meer kwesbaar vir skade as gevolg van harde klank . 'n Finse studie aanbeveel dat aktiewes moet stel hul hoof volumes tot die helfte van hul normale luidheid en gebruik hulle net vir 'n halfuur . Die gewone manier van die beperking van klank volume op toestelle ry oorfone is deur die beperking van uitset krag . Dit het die bykomende ongewenste effek van wat afhanklik is van die doeltreffendheid van die oorfone 'n toestel om die maksimum toegelaat mag dalk nie produseer voldoende volume in 'n lae - doeltreffendheid van hoë gehalte oorfone, terwyl dit moontlik bereik gevaarlik vlakke in 'n baie doeltreffende kinders.Watter klank ?Science Daily ( 27 November 2012 ) - Die gewildheid van persoonlike musiek toestelle soos iPods en ander MP3 -spelers en hul gebrek aan klank -beperkende beheermaatreëls betref 'n Harris Health System oor...

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