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MP3 à¤Ã×Íè §àŋ¹·ÕÊè ÒÁÒöÊÌҧ´ŒÇµÑǤسàͧàÇÍϪ¹Ñè 2

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Ò¡·Õèà¤ÂàʹÍâ¤Ã§§Ò¹ “MP3 à¤Ã×èͧàŋ¹·ÕèÊÒÁÒöÊÌҧ´ŒÇ µÑǤسàͧ” 㹩ºÑº·Õè 281 䴌Á¼Õ Íٌ ҋ ¹ËÅÒ ·‹Ò¹µÔã¹àÃ×Íè §¢Í§¡ÒÃ㪌ẵàµÍÃÕ·è ãÕè Ë­‹à¡Ô¹ ä»äÁ‹Êдǡ㹡ÒÃ㪌§Ò¹áÅÐà¤Å×è͹ŒÒ ´Ñ§¹Ñ¹é ¼ÙàŒ ¢Õ¹¨Ö§á¡Œä¢ãˌÊÒÁÒö㪌ẵàµÍÃÕè ¢¹Ò´ AA 䴌໚¹áËŋ§¨‹ÒÂ䴌 à¾×èÍãˌ àËÁÒСѺ¤íÒÇ‹Ò “MP3 ©ºÑº¾¡¾Ò” ʋǹ ÀÒ¤áÊ´§¼ÅäÁ‹ÊÒÁÒöáÊ´§¼Å¡ç䴌´àÕ ·‹Ò·Õè ¤Çà ઋ¹ ¡ÒÃáÊ´§ÃÒÂÅÐàÍÕ´¢Í§ª×Íè à¾Å§ ËÃ×Í¡ÒÃáÊ´§¼Å¢ŒÍÁÙŢͧà¾Å§ã¹¢³Ðàŋ¹ à¾Å§ à¾×Íè à¾ÔÁè ¢Õ´¤ÇÒÁÊÒÁÒö¹Õ¢é ¹Öé ÁÒ¨Ö§ à«ÁÔÏ 285 ¡ØÁÀҾѹ¸ 2549

µŒÍ§»ÃѺà»ÅÕÂè ¹ÁÒ㪌¨ÍáÊ´§¼ÅẺ¡ÃÒ¿¡ áÅÐ㪌¾ÅѧµèíÒ ÍÕ¡Í‹ҧ·ÕèÊíҤѭ¤×Í¡ÒÃ㪌 ÍØ»¡Ã³·Õè㪌¾Åѧ§Ò¹µèíÒà¾×èÍÊÒÁÒö㪌§Ò¹ 䴌¹Ò¹ áÅÐà»ÅÕÂè ¹äÁâ¤Ã¤Í¹â·ÃÅàÅÍÏà¾×Íè à¾ÔÁè »ÃÐÊÔ·¸ÔÀÒ¾ã¹àÃ×Íè §¢Í§¤ÇÒÁàÃçÇ

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´ÕÍÂÙዠŌǤ×Íä¿Åª¹Ô´ “MP3 ËÃ×Í MPEG Audio Layer 3” áÅÐã¹»˜¨¨Øº¹Ñ ¹ÕÁé äÕ ¿Å ·Õ¶è ¡Ù ºÕºÍÑ´ãˌàÅç¡Å§ÂÔ§è ¡Ç‹ÒÍÕ¡áººË¹Ö§è ¤×Í MP4 à¾×Íè 㪌§Ò¹ã¹Ê‹Ç¹·Õ¶è ¡Ù ¨íÒ¡Ñ´ã¹àÃ×Íè § ¢Í§¢Õ´¨íÒ¡Ñ´¢Í§àÃ×èͧ˹‹Ç¤ÇÒÁ¨íÒ àª‹¹ Á×Ͷ×Í áÅÐ à¤Ã×èͧàŋ¹ PMP (Portable Multimedia Player) ÊíÒËÃѺâ¤Ã§§Ò¹¹Õé ¢Í¾Ù´¶Ö§àÃ×Íè § MP3 ¡‹Í¹Ê‹Ç¹àÃ×Íè § MP4 ¶ŒÒ ¼ÙàŒ ¢Õ¹»ÃÐʺ¤ÇÒÁÊíÒàÃç¨ã¹¡Ò÷´Åͧ¨Ð䴌 ¹íÒàʹÍÁÒã¹ÃÙ»¢Í§â¤Ã§§Ò¹¡Ñ¹ã¹¤ÃÒǵ‹Íä» â¤Ã§§Ò¹à¤Ã×Íè §àŋ¹ MP3 ã¹àÇÍϪѹáá ¼Ù͌ ҋ ¹ä´Œãˌá¹Ð¹íÒ¶Ö§¢ŒÍº¡¾Ã‹Í§ÁÒ 135

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MP3 à¤Ã×Íè §àŋ¹·ÕÊè ÒÁÒöÊÌҧ´ŒÇµÑǤسàͧàÇÍϪ¹Ñè 2

136

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áÅШҡ¼ÙŒà¢Õ¹䴌ÇÔà¤ÃÒÐˏ´ÙáŌÇNjÒã¹ àÇÍϪѹááÁÕ¢ŒÍº¡¾Ã‹Í§·Õè¤ÇèзíÒ¡Òà ᡌä¢ÍÂÙʋ ÒÁÍ‹ҧ ¤×Í Í‹ҧááàÃ×Íè §¢Í§¡Òà 㪌¾Åѧ§Ò¹ àÃ×èͧ·ÕèÊͧÀÒ¤áÊ´§¼Å áÅÐ àÃ×èͧÊØ´·ŒÒ¡ÒÃ㪌ÀÒ¤»ÃÐÁÇżŠ(àÃ×èͧ ¤ÇÒÁàÃçÇ) ÊíÒËÃѺ¡ÒÃᡌ»­˜ ËÒàÃ×Íè §áá ¤×Í àÃ×èͧ¡ÒÃ㪌¾Åѧ§Ò¹ à¹×èͧ¨Ò¡ã¹àÇÍϪѹ áá¨Ð㪌áç´Ñ¹ä¿µÃ§¢¹Ò´ 5 âÇŵ «Öè§ ¨ÐµŒÍ§ãªŒáËŋ§¨‹Ò¨ҡÍÐá´»àµÍÏà¾ÃÒÐ ©Ð¹Ñ¹é ¡Òèо¡¾Òä»ä˹ÁÒä˹ ¡çµÍŒ §ÁÕ ÍÐá´»àµÍϵԴ仵ÅÍ´ËÒ¡äÁ‹ÁÕä¿¿‡Ò ¡çäÁ‹ÊÒÁÒö¿˜§à¾Å§ä´Œ ´Ñ§¹Ñ鹨֧ÁÕ¡Òà à»ÅÕè¹á»Å§ã¹àÃ×èͧ¢Í§¡ÒÃ㪌ÍØ»¡Ã³ »ÃÐàÀ··Õ¡è ¹Ô ¡íÒÅѧ俵èÒí «Ö§è ¼ÙàŒ ¢Õ¹䴌àÅ×Í¡ 㪌äÁâ¤Ã¤Í¹â·ÃÅàÅÍÏ·Õèŧ·ŒÒ´ŒÇ “L” ËÁÒ¶֧ Low Voltage for Operate «Ö§è ໚¹äÍ«Õ·¡Õè ¹Ô ¡íÒÅѧ俿‡ÒµèÒí ¡Å‹ÒǤ×Í ãªŒ áç´Ñ¹»ÃÐÁÒ³ 2 ¶Ö§ 5 âÇŵ ¡çÊÒÁÒö ·íҧҹ䴌 ´Ñ§¹Ñé¹â¤Ã§§Ò¹¹Õé¨Ö§ÊÒÁÒö㪌 ẵàµÍÃÕ袹Ҵ 1.5 âÇŵ 2 ¡ŒÍ¹ 㹡Òà ¨‹ÒÂãˌ¡ºÑ ǧ¨Ã㹡Ò÷íÒ§Ò¹ ÊíÒËÃѺàÃ×èͧ·ÕèÊͧ ¤×Í àÃ×èͧ¢Í§ ¡ÒÃáÊ´§¼Å à¹×Íè §¨Ò¡ã¹àÇÍϪ¹Ñ áá¨Ð㪌 áÍÅ«Õ´Õ¢¹Ò´ 16 µÑÇÍÑ¡Éà 2 ºÃ÷Ѵ «Ö觨ÐäÁ‹ÊÒÁÒöáÊ´§¼Å¢ŒÍÁÙÅ䴌ÁÒ¡¹Ñ¡ ઋ¹ ¡ÒÃáÊ´§ª×Íè à¾Å§ áÊ´§àÇÅÒ㹡ÒÃàŋ¹ à¾Å§ ÃÇÁ¶Ö§µíÒá˹‹§¤ÇÒÁ´Ñ§¢Í§àÊÕ§ áÅÐ Í×¹è æ ã¹àÇÅÒà´ÕÂǡѹ䴌 ÍÕ¡·Ñ§é Âѧ㪌¡ÃÐáÊ ã¹¡ÒÃáÊ´§¼Å¤‹Í¹¢ŒÒ§ÊÙ§ ´Ñ§¹Ñ¹é ¨Ö§ä´ŒÁ¡Õ Òà »ÃѺà»ÅÕè¹໚¹¨ÍáÍÅ«Õ´Õ¡ÃÒ¿¡áÅзÕè ÊíҤѭµŒÍ§ãªŒ¡Òí Åѧ俿‡ÒµèÒí 㹡ÒÃáÊ´§¼Å «Ö§è àÁ×Íè ¹íÒ¤ÇÒÁµŒÍ§¡ÒÃËÅÒÂæ Í‹ҧÁÒÃÇÁ ¡Ñ¹áÅŒÇ ¼ÙàŒ ¢Õ¹¨Ö§àÅ×͡㪌˹ŒÒ¨ÍÁ×Ͷ×ÍÂÕËè ͌ â¹à¡Õ (Nokia) Ãع‹ 3310 «Ö§è ÁÕÃÒ¤Ò¶Ù¡ áÅÐÊÒÁÒö㪌§Ò¹ä´Œ´Õ ÊíÒËÃѺàÃ×èͧ·ÕèÊÒÁ ¤×Í àÃ×èͧ¢Í§ ¤ÇÒÁàÃçÇ «Ö§è »¡µÔáŌÇäÁâ¤Ã¤Í¹â·ÃÅàÅÍÏ ·ÕèÁÕ¡ÒÃÍÔ¹àµÍÏà¿ÊÁҵðҹẺ SPI (Serial Peripheral Interface) ¨Ð㪌¤ÇÒÁ à«ÁÔÏ 285 ¡ØÁÀҾѹ¸ 2549

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