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'UDCᐳ᪗PGB/T50948-2013h1/74õᢈTechnicalcodeforarchitecturalacousticsofstadium2013-11-012014-06-01ᐳÐYXᐳEṓ§³×
ᐳ᪗h1/74õᢈTechnicalcodeforarchitecturalacousticsofstadiumGB/T50948-2013!"/:ᐳ)Ãᓄᢇ/:ᐳÐYX01:201456ᨴ10bᑜ8᱐:2013ᓅ"
ᐳ᪗·µj[¶·ᢈGB/T50948-2013☆bᑜ8᱐:8᱐uᙬ:www.jhpress.comᙢᙬ:ᓅ"Ëᩈùᙢᓅíᵬ11E0ᜧúC3Ú("ṹ:100038ᵯ2:(010)63906433()äÜ<ᓅ"ᡠr{ᓺᑵᒹ«ᨵ▲ÌÞᓺᑵ850mmX1168mm1/321.25ᓺÈ28ᓟf201455ᨴ/1᱐201455ᨴ/1ᓺᑵ☆¶uÜE:1580242•314mü:12.00ᐗ᱐ᩗᡠᨵKᩗ,Kᩗzáᵯ2:(010)63906404ᨵᓺ«E[⚪,âÖ:8᱐Öᣚ
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—a—ᑠᔧ᪷GÐYX《ᐵ<ᓺ〈20085)*᪗ᑴë、fëbᑜ(/ᢇ)>Ḅ@A》(᪗〔2008〕105E)Ḅ⌕M,ᵫ)Ãᓄᵯ~)᪗ᓄẆ,▾ᵯ~)*᪗mn"ᵯ~9ᢈ9|ÌÞ/rẆ,ᡠã)ᨵᐵᓫ$ᐳ)"ᑴ«ᡂḄ。ᙠ"ᑴè*,"ᑴpPTḄÖẆ,,í³[PvÒὃᑁᨵᐵḄ᪗,Tᔾ´µᑁᨵᐵᓫ$¢Ḅìµ,vᙠPèTëMìµḄẠL、ãfᦋ,ᨬPQmý。ᐳᑖ7Ò1▬¬,!⌕ᑁᒹ]:³ᑣ、N、74õb、û4ᑴ、Á«)、4õE、Eᦈk。ᵫÐYXcdeᳮ,ᵫ)Ãᓄcd0eᳮ,ᵫᵯ~9ᢈ9|ÌÞ/rẆ,ᡠcdᐹhᢈᑁḄij。ᙠè*ᨵ◤⌕fᦋ⊡ᐙJᜐ,âìµᡈᨵᐵᧇÖ〈ᵯ~9ᢈ9|ÌÞ/rẆ,ᡠ(ᙢᙬ:ᓅ"74.3Ã1,Ú("ṹ:100015;E-mail:renhonglei@cetc3.cn)。!"ᓫ$、Ò"ᓫ$、!⌕Z!⌕Q:!"ᓫ$:)Ãᓄᵯ~)᪗ᓄẆ,▾ᵯ~)*᪗mn"ᵯ~9ᢈ9|ÌÞ/rẆ,ᡠÒ"ᓫ$:ᓅ"ᝍᱯe9ᢈᨵ▲ÌÞ79õẆ,▾TᵯTGᵯᵯTbẆ,▾ᓅ"7bẆ,▾
rᜧõᑜbẆ,▾ᓅ"¾Hᑭ9ᢈ6ᨵ▲ÌÞvHḕᵯ~ð8ṓᡠ!⌕Z:Iè11Iî)ḽ▰▰ú"KLᩲi᠗NTᦻõᑢ᧡OᐺPQÈ᠗R9*ýᑢSᖆᦻᡚᵂ!⌕Q:UVWᕜXTᦻÅ▰ᑭᵪᡂàYᣩ▮0ᴴÈ᯿
2N.......................................................374õb..............................................3.1uvm...........................................................3.24⊦|l.....................................................3.3NÉÑê.....................................................3.4,3ÑÑᔠZ☢..........................................3.5Ãðᔾ4ᜐᳮ...............................................3.674õᩞᧇḄ⌱ᵨ....................................3.7"#ᵨY...........................................................4û4ᑴ.......................................................5Á«)...................................................64õE.......................................................6.1—vm...........................................................6.2Enᘤ...........................................................6.3Eᩩ¦...........................................................6.4EÓ...........................................................7Eᦈ.......................................................▬¬A74õ◚@)*)ᦈª¬ᵨ¯°..................................................xᵨ᪗Q¬.......................................................▬:ᩩᦻ°.......................................................
Contents1Generalprovisions.........................................................................................(l2Terms..................................................................................................(23Architecturalacousticdesign.................................................................(43.1Generalrequirement................................................................................(43.2Sounddecaytime.....................................................................................(43.3Speechintelligibility................................................................................(43.4Awningandretractableroof...............................................................(53.5Soundreflectionandabsorptionprocess........................................(53.6Buildingacousticmaterialofselection..............................................(63.7Auxiliaryroom...........................................................................................(64Noisecontrol....................................................................(75Installationsandconstruction...........................................................(86Acousticalmeasurements................................................(96.1Generalrequirement................................................................................(96.2Testingequipments................................................................................(106.3Measurementconditions..........................................................................(106.4Measurementmethod................................................................................(107Acceptanceofquality........................................................(13AppendixAAcceptancerecordofbuildingacousticsonhiddenprojetsquality.....................................................(14Explanationofwordinginthiscode.....................................................(15Listofquotedstandards..................................................................................(16Addition:Explanationofprovisions.....................................................(17
1.0.1T¶ûh1/ḄÅì、±]/ᙢ¢ôᐵᵨYᐹᨵýþḄ^_Ú,ᑴm。1.0.2〉ᵨ<ä、ᦋḄh1/Ḅ74õb、û4ᑴ、74õE·¢4õ)*)Eᦈ。1.0.374õb¤Ù7ᫀb▤ÑU,v¤4,¶bÕÖ)k。1.0.4ᙠᙢ⌱ᙬ,¤h1/ᕜz4ÚḄå。1.0.574õbᦻ¦¤ᒹ]4õb:Ü、4õb°。1.0.6h1/74õb、û4ᑴ、4õE、4õ)*)Eᦈ◀¤ÓᔠḄm,¤ÓᔠSᨵᐵ᪗Ḅm。
2N2.0.1h1/stadiumᐹᨵÑh1±]ᐸ⊤mᵨḄ|%Ḅ/ᙢ,)TᜧEḄÅìhḄ7ᱥ。2.0.24⊦|lsounddecaytimeᙠh1/ᑁ,4C4¥m⚣AḄ44=p60ᑖ(dB)ᡠ◤⌕Ḅl,ᓫ$Tì(s)。2.0.3(4echoéêÝ·ᜧᑮὡç·yᐸn¾4ᑖ²ÑḄÃð4ᡈᵫᐸ~ß7(ᑮ4ὅḄ4ü。2.0.4aÔû4backgroundnoisei4,¶)l,h1/ᑁ¿ᜐû44=p,·NRó© ü。2.0.5NÉÑêspeechintelligibilityüᡠḄNÉᓫ$(a、¯、ü⁚)PNÉÐ⌴,¶À^ὅõ"Ḅ±᳛。2.0.6NÉЩᢣᦪspeechtransmissionindex(STI)ᵫÖᑴÿÕᦪ(MTF)Ü8Ḅ üNÉÑêḄÀÅÒE。2.0.74,¶NÉЩᢣᦪspeechtransmissionindexforpublicaddresssystem(STIPA)NÉЩᢣᦪ(STI)ᙠYᩩ¦¸Ḅu~¹ᓄò,〉ᵨ< üᒹ]4,¶ḄYl4õḄNÉЩE。2.0.8standsh1/SᨵÅì$,vyTÅìhýþḄÅᩩ¦ÁᐰUḄÛᦣᩩ¦Ḅ᪀h。
2.0.9Åìseatsforspectatorh1/Åìű]Ḅ$,ᒹ])mVÿ。2.0.10ᒹ_boxᙠÅì,TæçᑖÅìḄᱯ¡⌕MSḄYl,uvᵫÅ$k᪀ᡂ。2.0.11GüstudioTTGᵨ,Pè4õᜐᳮᐹᨵô¤«ᜓḄ¢ᵨYl。2.0.12,3awning)mÁ«ᙠh1/LḄ×⚔3。2.0.13ÑÑᔠZ☢retractableroofÁ«ᙠ^òh1/LrḄÑ·ÑᔠḄZ☢。iZ☢ᔠ,h1/ᡂTrl,iZ☢Ñ-,h1/ᡂTÑrl。2.0.14r/unoccupiedstatestands/ᑁS½ᵨô),ûᨵ¨ÿᕒÅì。
374õb3.1—vm3.1.1h1/Ḅ74õᩩ¦¤·¶û½ᵨ4,¶NÉrᨎT!。3.1.274õb¤᪷Gh1/Ḅòᡈkpõm᪗,v¤ᙠbãᵨS⚜m᪗Ḅô¤µ。3.1.3ᙠ74õb,¤ᔠ7᪀òN4ᘤ,¶Ḅ$Sõmbᫀ。3.1.4h1/ḄÅìË@à8S(4、cÿ(44Ñᯖk4õ÷◍。3.1.5h1/7Ḅä_ᔉ、Gü、ᕒ、4¤74õb。3.24⊦|l3.2.1ᙠbè*,¤ã´µᑴh1/Ḅ4⊦|l。3.2.2h1/r/4⊦|làÓᔠ¸ᑡ⌕M:1ÑÑᔠZ☢ᐰ,4⊦|làᜧ<6s;2ÅìL,3☢á?<Åì☢á1/3Ḅh1/,4⊦|làᜧ<5s;3ÅìLú,3ᡈ,3☢á<Åì☢á1/3Ḅh1/,◤⌕4⊦|lḄᢣ᪗。3.3NÉÑê3.3.1h1/ḄÅì±]/ᙢ¤ᐹᨵýþḄNÉÑê。3.3.2ᙠbè*¤Óᔠ¸ᑡm:
1h1/Ḅ4⊦|làÓᔠ/3.2.2ᩩḄ⌕M;2¤ã´µᑴaÔû4Ḅ;3¤ÏÐ7☢xZḄ(4+"᱇4Ḅî§4;4N4ᘤ,¶Ḅ⌱S,◀⌕Mæç4,¶bḄᨵᐵ᪗⌕M,³¤74õbô%ñᔠ。3.3.3h1/Ḅ4,¶NÉЩᢣᦪ(STIPA)¤"<0.5。3.4,3ÑÑᔠZ☢3.4.1,3b¤Óᔠ¸ᑡ⌕M:1,3b¤N4ᘤ,¶×ôñᔠ;2,3᪀ᑁ⊤☢àᔾ4ᜐᳮ;3,3Ḅ⌼᪀òàxZ4÷◍;4ᙠ,3᪀ḄXïb,¤ᒹ{ᔾ4ᩞᧇ¢N4ᘤ,¶kᜓḄïE。3.4.2ÑÑᔠZ☢b¤Óᔠ¸ᑡ⌕M:1ÑÑᔠZ☢àô¤Ḅ4õᜐᳮ;2ÑÑᔠZ☢Ḅ⌼᪀òàxZ4÷◍。3.5Ãðᔾ4ᜐᳮ3.5.1h1/z¯ᜋhḄᑁᜋ☢à4õᜐᳮ。3.5.2!☢Ḅᜋ☢¤ᔾ4ᜐᳮ。3.5.3ᒹ_、ᕒ、h16½、Gü、4、ÄᐝᑴkYl,☢ᔣ/ᑁḄ7☢à6ÊS,ᡈᦣᡈᔾ4ᜐᳮ。3.5.4±]/ᙢᕜ¼Ḅz¯ᜋhàᏕÊS,ᡈᔾ4ᜐᳮ。3.5.5±]/ᙢa@⍝_`ᜋàST]☢ᡈᔾ4ᜐᳮ。3.5.6Åìᔜ8/☢ô@Ḅ^ᔉ¤ᔾ4ᜐᳮ。
3.5.7ÅìÛᦣ⚔àᔾ4ᜐᳮ。3.5.8à⌱ᵨᨵᔾ4ÝyḄ。3.674õᩞᧇḄ⌱ᵨ3.6.1,3、ÑÑᔠZ☢z¯ᜋhᡠ⌱ᵨḄ74õᩞᧇ¤Óᔠ¸ᑡ⌕M:174õᩞᧇḄ4õឋy¤Óᔠb⌕M;274õᩞᧇḄ8~、ôE¤Óᔠb⌕MS᪗Ḅm;374õᩞᧇḄ@ឋy¤ÓᔠS■÷᪗Ḅm;474õᩞᧇḄÚ¶ឋy¤Óᔠᨵᐵ7«⛲«fᩞᧇᨵMᱥ▲E᪗Ḅm;574õᩞᧇᡈ᪀¤æç■¹、■⏚、■w、■fḄ⌕M。3.7"#ᵨY3.7.1h1/7Ḅä_ãᔉ、h16½、Gü、4ᑴ¢ᕒ,500Hz〜1000HzlàT0.4s〜0.6s。3.7.2ᔜ"#ᵨYḄ74õb¤ᢥS᪗《ᒓ/、ᵯ▾?ᵨ⌶ᔉᚪ74õb》GB/T50356Ḅᨵᐵm。
4.0.1h1/ᙢ⌱ᙬ◀¤ÓᔠS᪗《h17b》JGJ31Ḅᨵᐵm,³¤Óᔠ¸ᑡ⌕M:1¤gḄᙢû4E,◀⌕EᙢḄᙳû4,³⌕8᪗Ý、ᨬᜧᨬ"Ḅû4p·¢ᨬᜧû4p{Ḅl8SḄ⚣᳛;2ᙢL¤ᑮ8Sᭆ᳛>ᜧvᐹᨵ+ឋḄéê>ᜧḄû4。4.0.2h1/ᑁḄû4ᑴb¤Ùh1/³hb▤ÑU,■¸ᑡ☢Ḅû4,v¤ã´ô¤Ḅû4ᑴµ:1¤■ᩭY/Ḅᔜû4h1/ᑁḄ;2}û4àSᙠÅì▬y,úÓÏÐ,¤ã´ᨵᦔḄû4¢þÿᑴµ;3ÑÑᔠZ☢,3᪀,à+0û4Ḅᜐᳮ;4h1/ᑁḄaÔû4àè50dB(A)。4.0.3ᔜ"#ᵨYḄû4ᑴb¢ô¤Ḅû4▲å¤ÓᔠS᪗《ᒓ/、ᵯ▾?ᵨ⌶ᔉᚪ74õb》GB/T50356Ḅᨵᐵm。4.0.4h1/ᙠz0Vÿ,ᐸᕜzÚḄ¤ÓᔠS᪗《4ÚE᪗》GB3096Ḅᨵᐵm。
5Á«)5.0.1)ᓫ$¤"ᑴ)pqbᫀ,v¤P4õ¢ᢈõ。5.0.2)%¤ᢈÜ,ᢈܤᒹ])*ᱯ¿、)ᫀ、)å⌕M、)E¢ᦈ᪗。5.0.374õᩞᧇ/¤ᢥ¸ᑡ⌕M:14õᩞᧇḄ8~、ô、ᦪE、ðᙢ¤Óᔠb⌕M;2ð8Ḅᔠôû、°Ü¢ᨵᐵᢈᧇ¤ᐰ;3^ᡂ8ᡈᡂ84õ᪀¦ḄŤ«þú。5.0.4ᙠ)è*¤þ^ᡂ8ᡈᡂ84õ᪀¦Ḅ¶¯。5.0.5,3ÑÑᔠZ☢Ḅ4õ᪀)¤æç4õb⌕M。
64õE6.1uvm6.1.1h1/4õEÑᙠr/ᩩ¦¸。6.1.2E?ᩩ¦¤ÓᔠS᪗《4ÚE᪗》GB3096Ḅᨵᐵm。6.1.34õE¤ᙠ4,¶ᔜ⚗4ᱯឋᢣ᪗Ḅᩩ¦¸,và4,¶Euv。6.1.4E⚗¤ᒹ]4⊦|l、aÔû44,¶NÉЩᢣᦪ(STIPA)。6.1.5ᦪGᜐᳮ,¤Åì±]/ᙢḄᦪGᑖᜐᳮ。6.1.6E,¤ÏÐᏔᯠNû4。6.1.7EÐ4ᘤàÁ«■,。6.1.84õEáU¤ᒹ]¸ᑡᑁ:1)*Qº¢ᭆ;2E⚗;3½ᵨnᘤ;4Eᩩ¦;5EÓ;6Eò;7EòḄ;8Eᓫ$mÒ;9ERÒ;10E01。
6.2Enᘤ6.2.1Enᘤ¤ÓᔠS᪗《ᔉᚪ4ᱯឋEÓ》GB/T4959Ḅᨵᐵm。6.2.2Enᘤ¤PbEᓫ$m,v¤ᙠbEᨵᦔ1ᑁ。6.3Eᩩ¦6.3.1E%¤Ö4,¶,½Jᜐ<)lª。6.3.2ÅìËḄ¿[Z¿ᜐᙢ☢}êàT1.2m,±]/ᙢᑁḄ¿[ᙢ☢}êàT1.6m。6.3.3¿Ḅ⌱´¤Óᔠ¸ᑡm:1²GN4ᘤ,¶Ḅ×·¢h1/Ḅº,Ñᙠh1/Ḅ1/2Ë@ᡈ1/4Ë@ᑁ⌱´¿;2ÅìËḄ¿ᦪàTEË@ᑁᦪḄ2%。,};<9;±]/ᙢEË@ᑁḄ¿ᦪ¤<3;3!Ë@à〉iR±¿ᦪ;4¿ᑖ¤ᙳ(vᐹf⊤ឋ。6.4SÓ6.4.14⊦|lÑãᵨ%4ÓE。Ekq¤Óᔠ¸ᑡm:1¤ᢥ4⊦|lE~ᳮ(®6.4.1)¸ÙEnᘤ;û4ÃE{ᘤ4ᜓ[^]------t^iN4ᘤ,¶N4ᘤ,¶混时测装响间试置EÐ4ᘤ®6.4⊦|lE~ᳮ᪾®10
2¤:ÃE✄4,¶©I,ᵨ4,¶!N4ᘤ,¶4。¤Ö⁚û4ÃE{ᘤᡈ4,¶ḄR¾,½¿ḄÃû±<35dB;3¤Eᡠᨵ¿ᜐ125Hz〜4000HzᔜK⚣AḄ4⊦|l。ᔜ¿ô)K⚣Aàï£3E。6.4.2aÔû4ḄE¤Óᔠ¸ᑡm:1¤ᢥaÔû4E~ᳮ(®6.4.2)¸ÙEnᘤ;:Ð4ᘤ|D-----------14ᑖ᪆/ª¬®6.4.2aÔû4:~ᳮ᪾®2E¤ᐵ4,¶;3aÔû4àᢥ1/3K⚣*E,E⚣AzàT31.5Hz〜8000Hz;4@èE¤;ᑮᔜ¿Ḅû4⚣ó©ô¤ḄAbᩗû4p、ᐰ/ᡠᨵ¿Ḅᙳû4⚣ó©ô¤ḄAbᩗû4p,vàb:᪗Ý。6.4.34,¶NÉЩᢣᦪ(STIPA)ḄE¤Óᔠ¸ᑡm:1¤ᢥSTIPAE~ᳮ(®6.4.3)¸ÙEnᘤ;2E,¤ᵨ4,¶!N4ᘤ,¶4。3¿ᜐḄ4=pàT80dB〜85dB;4NÉrᨎê:nMᢝò,¤ᐸÁ«ᙠqL,ᡈὅᐸEÐ4ᘤÁ«ᙠqL;5¤EH¿ḄSTIPAå,b:ᡠᨵ¿ḄSTIPAᙳå,vàb:᪗Ý。
®6.4.3STIPAE~ᳮ᪾®12
7781ᦈ7.0.1h1/74õ)*Eᦈ¤ᒹ]¸ᑡᦻ¦ᧇ:174õbᦻ¦;24õEáU;3ᔾ4ᩞᧇḄð8ᔠôûÜ、4õឋyáU、/ᦈª¬k;44õ᪀⌼¢◚@)*Ḅᦈª¬;5)0Â。7.0.2h1/Ḅ4⊦|lḄå¤Óᔠ/3.2.2ᩩḄm;4,¶NÉЩᢣᦪ(STIPA)Ḅå¤Óᔠ/3.3.3ᩩḄm;aÔû4Ḅå¤Óᔠ/4ÒḄm。7.0.3¤74õ)*Ḅ)Eᦈ,ᦈ⚗¤ᒹ]▲<¸ᑡᑁ:1¤ᔾ4᪀⌼Ḅ⚜¦、¸Ù⁚¿、ú*¢¸Ù¦Ḅ■ῖᜐᳮ·¢ᔾ4ᩞᧇk◚@)*Ḅ)Eᦈ,v¤ᢥ▬¬Apᑏ;2ᔾ4ᩞᧇḄᔾ4,ᦪ、4õឋy·¢8~ôk¤ð8ᔠôûÜᡈ4õឋyáUôÓ,ᔾ4᪀⌼¤Óᔠb⌕M;3ᔾ4⛲☢æᡈØ4⛲☢æ¤úᑜi、jó、÷。
▬¬A74õ◚@)*)ᦈª¬⊤A74õ)*)ᦈª¬⊤)*Qº᪀ᢇᦪ)ᓫ$⚗Pᳮ⚗ᢈcdᑖᒹᓫ$ᑖᒹᓫ$cdᑖᒹ⚗PᳮEË$、Ë mòᳮ()ᓫ$ᦈ12345678⚗¢ᢈcdᳮ)*kRᦈ(ᳮᓫ$⚗¢ᢈcd)5ᨴ05ᨴ014
ᵨ¯°1TU<ᙠᩩᦻËî,⌕MOô*ê)Ḅᵨ¯°¸:1)⊤½¾Oô,]᪵ÑḄ:☢¯ãᵨ“”,Ã☢¯ãᵨ“OἭ”;2)⊤½Oô,ᙠ¸ᙳ¤᪵Ḅ:☢¯ãᵨ“¤”,Ã☢¯ãᵨ“¤”ᡈ“;”;3)⊤½ᐕäÁᨵ⌱,ᙠᩩ¦äÑ✌ᐜ¤᪵Ḅ:☢¯ãᵨ“à”,Ã☢¯ãᵨ“à”;4)⊤½ᨵ⌱,ᙠumᩩ¦¸Ñ·᪵Ḅ,ãᵨ“Ñ”。2ᩩᦻᢣ¤ᢥᐸᨵᐵ᪗ḄᑏÓT¤Óᔠ……Ḅm”ᡈ“¤ᢥ……”。
xᵨ᪗Q¬《ᒓ/、ᵯ▾?ᵨ⌶ᔉᚪ74õb》GB/T50356《4ÚE᪗》GB3096《ᔉᚪ4ᱯឋEÓ》GB/T4959《h17b》JGJ31
ᐳ᪗h1/74õᢈGB/T50948-2013ᩩᦻ°
制订说明《h1/74õᢈ》GB/T50948—2013,PÐYX2013511ᨴ10·/198EÌUᢇ。ᢥ᯿ᵨឋ、ᐜឋ、ᔠᳮឋ、9õឋ、Ñ☠ឋ、ÕÖឋ、ᓄ~ᑣᑴë。ᑴëè*ᑖTᜓ▤、ëMìµ▤、〈Q▤áᢇ▤,"ᑴpᙠᔜ▤Ḅ!⌕)l¸:ᜓ▤:ZḄÑ⚪áU,ï¿ᑖ᪆Ḅ!⌕ᑁ᪾q᪀,Ẇ,ï¿[⚪,Á"ᑴ)lêᑖ)。ëMìµ▤:"ᑴp᪷GQmḄ"ᑴᜧ:⌕M,ᵫ¢cdZᔜÒ⁚Ḅᑁ。"ᑴpᙠTÖẆ,、í³[PÒὃᑁÑ⚙Ḅôᐵ᪗ḄẠL,h8µëMìµý0ý,ᯠdÑᵫ"ᑴpᐰhᡂᕒᑁᨵᐵ¢¢)*ᢈᕒÒ±Ḅèã,ᐭþ。ᙠwẠL,"ᑴpëMìµý0ýµíḄfᦋ«ᗐ,ᡂµëMìµýᩩᦻ°,ᵫᵯ~)*᪗mn"〈ᐰᔜᨵᐵᓫ$ëMìµ。ᙠlᑁ,ᐳᨵ16ᓫ$Ã✄µìµᐳb34ᩩ。"ᑴp7(ìµ⌲ᩩᙢẆ,lᳮ,ᙠTëMìµvãfᦋ,ᡂµ〈Qý。〈Q▤:201254ᨴ220,ᵫ)ÃᓄᑜÞᙠ⎎n?pqdѵ《h1/74õᢈ》〈Qý¢Qã,@èµQ。QR¢pT,·9õᡂò[PT²G,ᑮµᢈᐜ、ÁᐰÑ☠、¹ᓫ〉ᵨ,p⊡µᡃw¢)*ᢈ᪗Ḅr¤,uk«ᗐµ74õ)*᪗.,ᑡ。,¶ûh1/74õ)*E,Ã74õ)*⚞19
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7⊤☢kÃð☢¾᧕ð{(4。ᙠ▭,¤Ãð☢4õᜐᳮ。ÿ:ᒹ_、ᕒ、h16½、4kYl☢ᔣ/ᑁḄ7⊤☢,ᐸÀᴻᑖàᔣL6ÊSᡈᦣᜐᳮ,ᜋᑖàᦣᡈᔾ4ᜐᳮ。,ÅìᔜḄ8ᐭ/☢^ᔉô@,½4üÃ✄Ê/ᑁ,ßw,^òᔉ¤ᔾ4ᜐᳮ,·+4ÅìḄÃ✄。•26•
4û4ᑴ4.0.2ᩭY/Ḅû4!⌕Ü@û4(!、Y^、ærû4)·¢ᐸ:ãû4。h1/ḄÑÑᔠZ☢,3@ãᵨᩞ,ᵫwãAᩭ¸0ᡈᜧ00Z☢ᡈ,3ḄI4[⚪。ᱯᙠÑÑᔠZ☢«ᐰª¸,ð{Ḅ0û4᧕xZÅìអs,äã⌼ᡂh1/ᑁTGᡈញ¸Ḅ@Aᜫᮣ。ßwᙠ74õb,ÑÑᔠZ☢¢,3L⊤ᩞᧇàãᵨHᩞᧇ,¸⊤àãᵨᔾ4ᩞᧇ,·+50û4¢R±/ᑁḄᔾ4E。
64õE6.3Eᩩ¦6.3.3h1/ḄᦪEuvTᦪØ,ᨵḄÑ?¾10Ø。T+EḄ)lE,<ºḄh1/Ñ·BEh1/Ḅ1/2Ë@ᡈ1/4Ë@。6.4EÓ6.4.1mãᵨElḄÓ4⊦|lḄE,Eh1/ᡠᨵ!N4ᘤ¤ᐰÑ-。i¿ᜐḄÃû±ᜧ<ᡈk<35dB}"<45dB,èET20å。¿ᜐḄÃû±Ñ·¾ᑮ45dB·L}ãM4,¶,Ñ·ET30å。6.4.3ᩩmḄEÓᵯ©Ó,ßTᵯ©ᐭÓ±>¹U。i◤⌕4©ᐭÓE,¤ãᵨ:N4ᘤᡈ)ᘂlT:4,:4[4Ð4ᘤḄ[tT0.5m。Eh1/ᡠᨵ!N4ᘤ¤ᐰÑ-,4,¶àᜐᙠᨬ}ÑᵨR¾ª。ãᵨ4©ᐭÓ,Enᘤᢥ®1¸Ù。4ᜓ扩话声筒卜[^]-----------[^]STIPA4⚣mlN4ᘤ,¶N4ᘤ,¶%pÃEÝ᳛ᜓSTIPA{ᘤᜧᘤ:n®1STIPA4©ᐭÓE᪾®28
ȵiø?ᨵᐵSTIPAḄÃ,ÑÒ▅IEC60268-16,Soundsystemequipment-Partl6:Objectiveratingofspeechintelligibilitybyspeechtransmissionindex。29
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