Page 39 - Demo

%uadf8%ub7f0%ub370 %uccad%ub825%ubcf4%ud638%uad6c%uc758 %uc131%ub2a5%uc744 %ud310%ub2e8%ud560 %uacbd%uc6b0, Fig 6.%uc640 %uac19%uc774 %uc81c%uc870%uc0ac%uc5d0%uc11c%ub294 SNR(Single Number Rating, %uc720%ub7fd) or NRR(Noise Reduction Rating, %ubbf8%uad6d)%uc758 %uc131%ub2a5 %uae30%uc900%uac12%uc744 %ud45c%uae30%ud558%uace0 %uc788%uc9c0%ub9cc, %uad6d%ub0b4%uc5d0%uc11c%ub294 %uace0%uc6a9%ub178%ub3d9%ubd80%uace0%uc2dc %uc81c2023-64%ud638 %u201c%ubcf4%ud638%uad6c %uc548%uc804%uc778%uc99d %uace0%uc2dc%u201d%uc758 %uc131%ub2a5 %uc2dc%ud5d8%ubc29%ubc95%uc5d0%uc11c %uc911%uc2ec%uc8fc%ud30c%uc218(Hz)%ubcc4 %ucc28%uc74c%uce58(dB)%uc5d0 %ub530%ub978 %uc131%ub2a5%uc744 %ud655%uc778%ud558%uc5ec %ub4f1%uae09 %ud45c%uae30%ub9cc%uc744 %ud558%uace0 %uc788%uc73c%uba70 %uba85%ud655%ud55c %uc131%ub2a5 %uae30%uc900%uac12%uc744 %ud45c%uc2dc%ud558%uace0 %uc788%uc9c0 %uc54a%uc544 %uad6d%ub0b4%uc678 %uc81c%ud488%uc758 %uaddc%uaca9 %ube44%uad50%ub97c %uc62c%ubc14%ub974%uac8c %ud560 %uc218 %uc5c6%uace0 %uc18c%ube44%uc790%uac00 %ud310%ub2e8%ud558%uae30 %uc704%ud55c %uae30%uc900%uc774 %uac04%ub2e8%ud558%uc9c0 %uc54a%uc544%uc11c %uc81c%ud488 %uc120%ud0dd %uc2dc %uc5b4%ub824%uc6b4 %ubd80%ubd84%uc774 %uc874%uc7ac%ud558%uace0 %uc788%ub2e4. %ub610%ud55c, NIOSH%uc5d0%uc11c %uae30%uc874 %ubcf4%ud638%uad6c%uc758 %ucc28%uc74c%ub825%uc740 %uadc0%ub36e%uac1c -25%, %ud3fc%uadc0%ub9c8%uac1c -50%, %uadf8 %uc678 (%uc7ac%uc0ac%uc6a9 %ub4f1) -70%%ub85c %ub0ae%uc740 %uae30%ub300%uc131%ub2a5 %uc801%uc6a9%uc744 %uad8c%uace0%ud558%uace0 %uc788%uc5b4%uc11c %uc81c%ud488 %uc120%ud0dd%uc5d0 %uc788%uc5b4%uc11c %uc801%uc808%ud55c %ud310%ub2e8%uc774 %ud544%uc694%ud558%ub2e4.%ucd9c%ucc98: 2022-%uc0b0%uc5c5%uc548%uc804%ubcf4%uac74%uc778%uc99d%uc6d0-279 %u201c%ubc29%uc74c%uc6a9%ubcf4%ud638%uad6c %uc548%uc804%ud55c %ubcf4%ud638%uad6c %ucc29%uc6a9 %uae38%uc7a1%uc774%u201d2. %uccad%ub825%ubcf4%ud638%uad6c %ubc00%ucc29%ub3c4 %uac80%uc0ac%uadfc%ub85c%uc790%uc758 %uadc0 %uac74%uac15%uc0c1%ud0dc%uc640 %uc791%uc5c5%ud604%uc7a5%uc5d0 %ub9de%ub294 %uccad%ub825%ubcf4%ud638%uad6c%uc758 %uc120%ud0dd %ubc0f %uc81c%uacf5%uc774 %uba3c%uc800 %uc120%ud589%ub418%uc5b4%uc57c %ud558%uc9c0%ub9cc %uc62c%ubc14%ub978 %uc120%ud0dd%uc778%uc9c0 %uba85%ud655%ud558%uc9c0 %ubabb%ud558%ub2e4. %uc81c%uacf5%ub41c %ubcf4%ud638%uad6c%uac00 %uacfc%ubcf4%ud638%ub97c %ud558%uc5ec%ub3c4 %uc758%uc0ac%uc18c%ud1b5%uc5d0 %uc9c0%uc7a5%uc744 %uc8fc%uc5b4 %uc548%uc804%uc0ac%uace0 %uc704%ud5d8%uc744 %ub192%uc774%uace0, %uc81c%ub300%ub85c %ucc29%uc6a9%ub418%uc5b4 %uc788%uc9c0 %uc54a%uc73c%uba74 80db %uc544%ub798%ub85c %ubcf4%ud638%uac00 %ubd88%uac00%ub2a5%ud558%uc5ec %uc18c%uc74c%uc131 %ub09c%uccad%uc774 %ubc1c%uc0dd%ud560 %uc218 %uc788%ub2e4. %uadf8%ub807%uae30%uc5d0 %uac1c%uac1c%uc778%uc5d0%uac8c %ub9de%uac8c %ubcf4%ud638%uad6c%uc758 %uc131%ub2a5%uc774 %uc81c%ub300%ub85c %uc791%ub3d9%ub418%uace0 %uc788%ub294%uc9c0 %ubc00%ucc29 %uc0c1%ud0dc %ud655%uc778%uc740 %uc911%uc694%ud558%ub2e4. Table 1.%uacfc %uac19%uc774 %uc77c%ubc18 %uccad%ub825%uac80%uc0ac%uc5d0%ub294 %ud06c%uac8c %uc8fc%uad00%uc801 %ubc29%ubc95%uc778 %uc21c%uc74c(Pure Tone Audiometry)%uacfc %uac1d%uad00%uc801 %ubc29%ubc95%uc778 %uc784%ud53c%ub358%uc2a4(Impedance Audiometry) %ub4f1 %ub2e4%uc591%ud55c %ubc29%ubc95%uc774 %uc874%uc7ac%ud55c%ub2e4. %uccad%ub825%ubcf4%ud638%uad6c%ub97c %ub300%uc0c1%uc73c%ub85c %uadfc%ub85c%uc790%uc758 %uadc0%uc5d0 %ubc00%ucc29%ub41c %uc0c1%ud0dc %uc815%ub3c4%ub97c %ud310%ub2e8%ud558%ub294 %uac80%uc0ac%ubc29%uc2dd%uc740 %ud604%uc7ac %uad6d%ub0b4%uc5d0%uc11c%ub294 %uc21c%uc74c%uccad%ub825%uac80%uc0ac%uc640 F-MIRE(Field Microphone In Real Ear) %ubc29%uc2dd%ub9cc%uc774 %ud65c%uc6a9%ub418%uace0 %uc788%ub2e4. %uc21c%uc74c%uccad%ub825%uac80%uc0ac%ub294 %uc0b0%uc5c5%uc548%uc804%ubcf4%uac74%uacf5%ub2e8 %u2018%uc21c%uc74c%uccad%ub825%uac80%uc0ac%uc5d0 %uad00%ud55c %uc9c0%uce68%u2019 H-56-2023%uc5d0 %uba85%uc2dc%ub418%uc5b4 %uc788%uc73c%uba70 %uae30%ubcf8 %uac74%uac15%uac80%uc9c4%uc5d0%uc11c %uccad%ub825%uc0c1%ud0dc%ub97c %ud655%uc778%ud560 %ub54c %uc0ac%uc6a9%ub420 %uc815%ub3c4%ub85c %uc624%ub7ab%ub3d9%uc548 %uc2e0%ub8b0%ubc1b%uc544%uc628 %ubc29%uc2dd%uc774%ub2e4. %ud53c%ud5d8%uc790%uc778 %uadfc%ub85c%uc790%uac00 %uc9c1%uc811 %uc18c%ub9ac%ub97c %ub290%ub07c%uace0 %ud310%ub2e8%ud55c%ub2e4%ub294 %uc810%uc5d0%uc11c%ub294 %uc8fc%uad00%uc801%uc778 %ubc29%ubc95%uc774%uc9c0%ub9cc, %uc2e4%uc81c %uc8fc%ud30c%uc218%ubcc4 %uc18c%ub9ac %ubc18%uc751%uc5d0 %ub530%ub77c %uc218%uce58%ud654%ud558%uc5ec %uba85%ud655%ud558%uac8c %uc0c1%ud0dc %uc774%uc0c1 %uc5ec%ubd80%ub97c %ud310%ub2e8%ud560 %uc218 %uc788%uae30 %ub54c%ubb38%uc5d0 %uc2e0%ub8b0%ubc1b%ub294 %uc9c1%uad00%uc801%uc778 %ud3c9%uac00%ubc29%ubc95%uc778 %uac83%uc774%ub2e4. %ub2e8, %uc8fc%ud30c%uc218%ubcc4 %uc18c%ub9ac%ub97c %ubd80%uc5ec%ud558%uc5ec %ud310%ub2e8%ud558%uae30 %ub54c%ubb38%uc5d0 %ub2e4%uc18c %uc2dc%uac04%uc774 %uc18c%uc694%ub418%uace0 %uc8fc%uc704 %ud658%uacbd%uc5d0 %uc601%ud5a5%uc744 %ubc1b%ub294%ub2e4. SNR & NRR %uc0c1%uad00%uad00%uacc4%uc2dd%uc740 %uc5c6%uc73c%ub098, %ub300%ub7b5 3~5db %ucc28%uc774 %uc81c%ud488 %uc131%ub2a5 %uae30%uc900%uac12%uc774 %uc5c6%uc74cKOHA %ubcf4%uac74%uc548%uc804 39