Electroacoustic national and industry standards

1. National standards:
GB / T 10240-1988 Specification for editing and production of program source for subjective evaluation of sound quality of electroacoustic products
GB / T 13157-1991 35mm film optical soundtrack echo sound frequency response characteristics
GB / T 15397-1994 Measurement method for electro-acoustic frequency response characteristics of A-ring and B-ring in movie recording control room, appraisal screening room and indoor cinema
GB3241 1/1 and 1/3 octave filters for sound and vibration analysis
GB3661 Technical conditions for testing condenser microphones
GB3785 sound level meter electrical and acoustic performance and measurement methods
GB3947 Acoustic terms
GB / T 13156-1991 Technical requirements for architectural acoustics of cinema auditorium
GBT XXXX "Specifications for acoustic design of theaters, cinemas and multi-purpose halls"
Acoustic characteristics of GYJ25 hall sound reinforcement system
GB / T 4959-1995 Hall sound reinforcement characteristics measurement method
GB / T14218-93 Electronic dimming equipment performance parameters and measurement methods
SJ2112-82 The optimal electrical connection value for the interconnection of hall sound reinforcement system equipment
GYJ-25 and GB4959, two important national standards, almost all projects need to use them as the basis for design, construction, and acceptance.
GB / T14218-93 and SJ2112-82, these two standards can play an important role in equipment selection and engineering test acceptance.
2. Industry standard:
WH0301—93 Acoustic characteristic index and measurement method of sound reinforcement system
JGJ 57-2000 Theater Building Design Code
JGJ / T131-2000 Gym Acoustics Design and Measurement Regulations
The world premiere of the technical zone! ROHM has developed the power supply IC "BD372xx series" for high-quality audio. A practical guide for the purchase of home wireless routers. Understanding the circuit diagram and working principle of the audio. Talking about the "frequency response curve" in the audio. Deep dismantling report of the M0pro speaker: both internal and external

Follow WeChat

Interesting and informative information and technical dry goods

Download Audiophile APP

Create your own personal electronic circle

Follow the audiophile class

Lock the latest course activities and technical live broadcast
Collect People collection
share it:
comment
Publish

related suggestion

Intel unified smart home platform wants to be the industry standard setter

Smart home will be the next wave, but these years have only existed in the concept. The layout of home appliance companies is mostly just using the concept to make selling points; Internet companies ...

Posted at 2014-11-06 10:05 • 585 views
Intel unified smart home platform wants to be the industry standard setter
Why mobile power industry standard is difficult to form?

The mobile power industry is a new industry. The industry standard system is to regulate the industry's sound field, technology and channels, and prices; it is the state of sustainable development of the industry ...

Posted at 2012-12-25 15:34 • 635 views
Why mobile power industry standard is difficult to form?
From the LED lighting companies encountered "fishing law enforcement" to see the lack of industry standards

The call for national standards for LED lighting is a topic that the industry has been discussing. Although various localities are already formulating and testing their own local standards, but ...

Posted at 2012-10-17 15:50 • 323 times read
From the LED lighting companies encountered "fishing law enforcement" to see the lack of industry standards
Introduction of National Standards and Industry Standard Codes

National Standards and Industry Standard Codes Introduced the State Council ’s institutional reforms. The State Council made major adjustments to the settings and functions of various departments. To strengthen the standard ...

Posted on 2010-01-14 16:53 • 1218 times read
Introduction of National Standards and Industry Standard Codes
What is the electronics industry standard

What is the standard of the electronic industry? The predecessor of the Ministry of Electronics Industry is the Fourth Ministry of Machinery Industry, SJ is the first letter of Siheji Pinyin, S--four, ...

Posted at 2009-05-24 23:24 • 526 views
What is the electronics industry standard
The PCB industry calls for industry standards

In recent years, China has printed ...

Published on 2006-03-13 13:01 • 223 times read
The PCB industry calls for industry standards
var check_allow = "/d/Api/iscantalk.html"; var add_url = '/ d / article / write /'; function CheckLogin () {now_uid = ''; var ElecfansApi_checklogin = '/ webapi / passport / checklogin'; var logout_url = "{: U ('Login / logout')}"; var logout_url = 'http://bbs.elecfans.com/member.php?mod=logging&action=logout&refer=front'; $ .get (ElecfansApi_checklogin, function (data, textStatus) {if (data! = "") {EchoLoginInfo (data); CheckEmailInfo (data); data = $ .parseJSON (data); now_uid = data.uid; / * var login_content = 'write an article
'+ data.username +'
Quit '; * / var login_content =' write an article
'+ data.username +'
Set exit '; $ (' # login_area '). Html (login_content); var win_width = $ (window) .width (); if (win_width> 1000) {$ ("# mine"). MouseDelay (200) .hover (function () {$ ("# mymenu"). show ();}, function () {$ ("# mymenu"). hide ();});}} else {var content = 'Login Registration'; $ ('# login_area'). html (content); $ (". special-login"). click (function (e) {$ .tActivityLogin (); return false;});}});} $ (function () {// comment ------------------------------- var comment = $ ("# comment"); var comment_input = $ ("# comContent"); // Submit comment click event interaction $ ("# comSubmit2"). on ('click', function () {var content = comment_input.text (); // Empty input box comment_input. html (""). focus (); // Submit data to the server $ .ajax ({url: '/plus/arcComment.php', data: {aid: $ ("# webID"). val (), dopost : 'apiPubComment', content: content}, type: 'post', dataType: 'json', success: function (data) {// Data format returned: if (data.status == "successed") {// Build temporary comment DOM var dom = ''; dom + = '
'; dom + =' '; dom + ='
'; dom + ='

'+ data.data.username +' '; dom + ='

'; dom + =' '+ content +' '; dom + =' '; dom + =' just now '; dom + =' '; dom + =' '; // insert a temporary comment to the list $ ("# comment ") .append (dom);} if (data.status ==" failed ") {// alert (data.msg); layer.msg (data.msg);}}}); return false;}); (function () {/ * * Insert single sign-on JS * / var setHost = 'https://passport.elecfans.com'; // Set domain name var script = document.createElement ('script'); script.type = 'text / javascript'; script.src = setHost + '/public/pc/js/t.passport.js'; script.setAttribute ("id", "sso_script"); script.setAttribute ("data-ssoSite", setHost); script.setAttribute ("data-ssoReferer", encodeURIComponent (location.href)); script.setAttribute ("data-ssoSiteid", "11"); var body = document.getElementsByTagName ("body"). item ( 0); body.appendChild (script);}) () / * * It is recommended to modify the style of the article without a picture * * / $ (". Article .thumb"). Each (function () {if ($ (this). find ('img'). attr ('src') == "") {$ (this) .find ('img'). remove (); $ (this) .parent (). css ('padding-left ',' 0px ');}}); / * Baidu share * / window._bd_share_config = {common: {bdText: '', // Custom share content bdDesc: '', // Custom share summary bdUrl: window.location.href, // Custom share URL address bdPic: ''} , share: [{"bdSize": 60, "bdCustomStyle": true}]} with (document) 0 [(getElementsByTagName ('head') [0] || body) .appendChild (createElement ('script')). src = 'http://bdimg.share.baidu.com/static/api/js/share.js?cdnversion=' + ~ (-new Date () / 36e5)]; var add_url = '/ d / article / write / '; // var check_allow = "{: U (' Api / iscantalk ')}"; var check_allow = "/ d / api / iscantalk"; var click_items_length = $ ('. art_click_count '). length; if ( click_items_length> 0) {var id_str = ''; $ ('. art_click_count'). each (function () {id_str + = $ (this) .attr ('data-id') + ',';}) // var url = "{: U ('Api / getclickbyids')}"; var url = "/ d / api / getclickbyids"; var id_data = 'id_str =' + id_str; $ .ajax ({url: url, data: id_data, type: 'post', dataType: 'json', success: function (re) {if (re.list.length> = 1) {var list = re.list; for (var i in list) {var t emp_id = list [i] ['id']; var temp_span = $ (". art_click_count [data-id =" + temp_id + "]") temp_span.html (list [i] ['click']);}} }})} $ ("# comContent"). click (function () {if (now_uid == '') {$ .tActivityLogin (); return false;}}) $ (function () {var follow_wrap = $ ( ".author-collect"); var now_uid = "{$ _super ['uid']}"; var face_src = "{$ _super ['uface']}"; var getFollowNum = $ (". followNum strong"). html (); // Follow $ (window) .on ('click', '.author-collect', function () {if (now_uid == '') {$ .tActivityLogin (); return false;} if ( $ (this) .attr ('id') == 'follow') {$ .post ('/ d / user / follow', {tuid: article_user_id}, function (data) {// Data format returned: if (data.status == "successed") {$ (". followNum strong"). html (++ getFollowNum); follow_wrap.html ('followed'). attr ('id', 'cancelFollow'). css ( 'background', '# 999'); var follow_user = ' '; $ (' # follow_list '). append (follow_user);} if (data.status == "failed") {alert (data.msg);}});} else {// Unfollow if ($ ( this) .attr ('id') == 'cancelFollow') {$ .post ('/ d / user / cancelFollow', {tuid: article_user_id}, function (data) {// Data format returned: if (data .status == "successed") {follow_wrap.html ('Follow'). attr ('id', 'follow'). css ('background', '# f90'); $ (". followNum strong"). html (-getFollowNum); $ ('# follow_list .face'). each (function () {var target_uid = $ (this) .attr ('data-uid'); if (target_uid == now_uid) {$ ( this) .remove ();}})} if (data.status == "failed") {alert (data.msg);}}); return false;}}});});}); / * var myface = "{$ _super ['uid'] | avatar}"; var myname = "{$ _super ['username']}"; var article_id = {$ article ['id']}; var article_user_id = {$ article ['mid']}; // Article author ID $ (function () {<notempty name = "clearnum"> // Reduce the number of reminders var count = parseInt ($ ("# noticeCount"). html ()); count = count-{$ clearnum}; $ ("# noticeCount"). html (count); if ( count

Check Scanners Cleaning Kits

Ipa Check Scanner Cleaning Card,Check Scanner Cleaning Card,Disposable Ipa Cleaning Card,Alcohol Free Flocked Card

Miraclean Technology Co., Ltd. , https://www.mrccleanroom.com

Posted on