Brief introduction of BBE sound effect enhancement processing circuit chip

BBE sound effect enhancement processing technology is an audio technology used by the US BBE Sound Inc to greatly improve the quality of listening sound, and can intelligently correct and restore any defects in the audio system that lead to signal loss and phase deviation due to various reasons. Therefore, the sound is reproduced realistically, and the listening experience is rich in high and low sounds. At the same time, the original lost sound details can be reproduced. The sense of positioning, clarity, and brightness are close to the ideal live sound effect. Adding BBE circuit to the sound system will make The sound is brighter, giving you more depth, slenderness and clarity. The treble is slender, the midrange is transparent and mellow, the bass is full and natural, so that the listener has an immersive effect. Due to the limited layout, BBE technology is introduced in detail in this journal and other electronic publications, so I won't make too much description here.

Since BBE entered the Chinese audio field in 1998, it has been widely promoted and loved and respected by enthusiasts. At present, powerful audio manufacturers have applied BBE circuits to their products, making their products more popular with enthusiasts. The author suggests that if you do n’t have an amplifier and want to buy an amplifier, you should choose a well-known brand product with "BBE" function. If you have an amplifier and are not satisfied, you can buy a BBE finished board and add it to upgrade the amplifier. Enjoy the ideal original sound effect that "BBE" brings to you, which is clear, slender, and bright. It costs only a few tens of yuan. The installation method is very easy. Just connect the signal of the audio source to the signal input terminal of BBE, and then The signal output end processed by BBE can be connected to the input end of the power amplifier. The BBE board can be installed in the power amplifier or audio source (in the CD player, VCD player, etc.), and the power supply is taken from the DC power supply in the machine (be careful not to exceed three terminals The maximum operating voltage of the voltage regulator IC, and pay attention to the heat dissipation of the three-terminal voltage regulator IC).

Common BBE processing circuit chips are BBE2150, BBE2152 (ie NJM2150, NJM2152) of Japan JRC Company, BA3880, BA3884, BH3868 of Japan ROHM Company, XR1071, XR1075 of EXAR Company of the United States, etc. Here we introduce the current widely used audio products in China Chips BBE2150, BA3884 and XR1071. These three BBE chips are highly respected and loved by enthusiasts, and the BBE finished boards of these three chips are produced by many manufacturers in China and handle the mail order business. For example, Yunan, Guangdong Province County Meishun Electronics Factory, the specific price can refer to the mail order advertisement of the factory.

BBE2150 is a BBE processing circuit introduced by JRC in Japan. Its main features are: working voltage 4.5V-13V (typical value 9V), working current 8-12mA, with pass-through and BBE selection functions, BBE high-frequency resolution and low-frequency compensation 2 choices (6dB and 9dB). Figure 1 is the application circuit diagram of BBE2150. Pins 1 and 20 are the left and right channel signal input terminals, pins 7 and 14 are the left and right channel signal output terminals, pin 11 is the power ground, pin 12 is the positive power input terminal, pin 10 It is the control terminal of BBE and through switch (BBE is turned on at high level, and BBE is turned off at low level), pin 8 is BBE high frequency resolution control terminal (9dB at high level, 6dB at low level), pin 9 To correct the envelope distortion control terminal (low frequency boost compensation, 9dB at high level, 6dB at low level). After the audio signal is enhanced by the sound effect of BBE2150, the effect is very obvious. When it is switched from straight-through to BBE, the high-pitched sound is clear, natural and bright, the detail expression is particularly strong, and the bass is naturally thick. It's amazing to hear the original sound effect!

Although the effect of BBE2150 is good, because the high-frequency resolution and low-frequency compensation boost values ​​are all gear control, it will feel some restrictions when used. So the second-generation BBE improved products have appeared, such as BA3884, XR1071, etc., which is first introduced here BA3884. BA3884 is a BBE circuit launched by Japan ROHM company. Its main characteristics are: working voltage 5.4-12.3 (typical value 9V), working current about 13mA, with pass-through and BBE selection function; high frequency resolution and low frequency compensation can be flexibly adjusted (high The frequency resolution can be controlled by an 8-pin external potentiometer with a range of 0 to 9.6dB, and the low-frequency compensation is controlled by a 7-pin external potentiometer with a range of 0 to 8.8dB). Figure 2 is the application circuit diagram of BA3884. Pin 19 is the positive power input terminal, pin 6 is the power ground, pin 7 is the low frequency compensation boost control terminal, pin 8 is the high frequency resolution boost control input terminal, and pin 14 is the right channel signal. On the input side, pin 13 is the right channel signal output, pin 23 is the left channel signal input, and pin 24 is the left channel signal output. The BA3884BBE circuit is added to the sound system. In addition to the clear, slim, bright and natural sound quality that "BBE" brings to you, you can also flexibly adjust its high frequency resolution and low frequency according to the program source and listening environment. Compensate the boost value and create a favorite music world!

XR1071 is a high-resolution BBE sound enhancement processing circuit launched by the US EXAR company. Its performance is similar to that of BA3884. It also has a low-frequency compensation boosting function and a high-frequency resolution boosting adjustment function. The parameter index is higher than BA3884. XR1071 adopts bipolar device integration, its noise is extremely low, the total harmonic distortion is small, the resolution is high, the adjustment range of high frequency resolution (resolution) and low frequency compensation is large: the range of high frequency resolution (resolution) is 0dB-9.7dB (control by changing the 17-pin potentiometer to change the 17-pin DC level); low-frequency compensation boost adjustment range is 0dB ~ 9.9bB (by adjusting the external potentiometer resistance of 12, 13, 20, 21 feet Value to adjust). Figure 3 is the application circuit diagram of XR1071. Pin 2 is the negative power input (-5V), pin 31 is the positive power input (+ 5V), and pin 16 is the BBE bypass control input (through at high level, and at idle). BBE processing), Pin 17 is the resolution control input (adjust the input level through the potentiometer to control the magnitude of the high-band amplitude compensation), Pin 6 is the left channel signal input, Pin 27 is the right channel signal On the input side, pin 15 is the left channel signal output, and pin 18 is the right channel signal output. Adding XR1071 to the audio system can immediately upgrade the sound quality, and can obtain a better "BBE" effect than BBE2150 and BA3884. It has low noise, low distortion, high frequency resolution and low frequency compensation. Reasonably adjust to make you most satisfied.

The three chips of BBE2150, BA3884 and XR1071 have the best effect with XR1071, but the price is higher. The effect of BA3884 is close to XR1071 and the price is also low. It is a BBE circuit with better cost performance. BBE2150 has a low price and good effect, but the resolution is through Controlled by the switch, it is subject to certain restrictions in application. Due to its low price, it is still used in conjunction with the tone circuit of the power amplifier. It still has the same resolution as the BA3884 and XR1071. It can be adjusted by the high tone, and the low frequency compensation can be adjusted by the low tone. So BBE2150 is also loved by enthusiasts. At present, the most used BBE chip for audio products (power amplifiers) is BBE2150, followed by BA3884, and XR1071 is less used because of the higher price. However, due to the good effect of XR1071, many enthusiasts are willing to spend more money to add XR1071 to it. Upgrade your own audio equipment to enjoy the most high-end "BBE" effect.

The circuits in Figure 1-3 are equipped with three-terminal voltage regulator IC, so it is very convenient to install in various power amplifiers, CD players, VCD machines, super VCD machines, etc. The power supply can be directly taken from the DC power supply in the machine (do not exceed three The highest working voltage of the terminal voltage regulator IC, and pay attention to the heat dissipation problem), if there is indeed no one can add a transformer and make a power board to supply power to it, of course, one more transformer will increase the interference of the electromagnetic field on the audio and damage the sound quality. Although BBE2150, BA3884, XR1071 can enhance the sound quality, the peripheral components are also very important. If the peripheral components are poor, it is like a flower inserted on cow dung. Therefore, it should be a good horse with a golden saddle: ①The circuit board uses copper and platinum thick epoxy circuit boards, and the circuit boards of BA3884 and XR1071 use silver plating technology, which is good for sound quality and fidelity; ②The signal coupling capacitor uses Japanese capacitors. The other electrolytic capacitors use ruby, black diamond, ELNA and other brands of fever products; ③ electrodeless capacitors use Japanese music CBB metalized non-inductive capacitors or MKP capacitors; ④ resistance uses imported five-color ring metal film low noise resistance, and potentiometers use imported high-quality Products such as X · T brand.

After installing BBE in the audio system, pay attention to it: according to different sound sources and listening environment, the amount of high and low bass should be reasonably controlled, especially the high frequency resolution should be improved properly, because the trimming effect of the BBE circuit is very obvious. The addition of BBE processing system to various sound systems of different grades can make the audio playback effect have better clarity, fidelity and presence, giving the listener a clear, slender, bright and transparent ... . If you are interested in assembling the Hi-Fi combination, you can assemble according to the following scheme: audio source (CD player, VCD player, etc.) → BBE circuit (such as BBE2150, BA3884, XR1071, etc.) → LM4610N (with volume, tone, balance, equal loudness control) And 3D sound field processing function) → power amplifier (such as TDA7294, LM3886TF, TDA1514A, LM1875T, etc., the best effect is TDA7294! The power amplifier IC has perfect functions, the internal circuit is a field effect tube differential input, and the driving stage and power output stage are also used Field effect tube, so it has a beautiful tone similar to the tube amplifier-soft, round, delicate, rich in music). In addition, a toroidal transformer, power board and horn protector can be equipped. Pay attention to the grounding method when assembling. The capacity of the filter capacitor should be large, which not only solves the noise problem but also meets the needs of large dynamics. I believe that as long as it is properly assembled, its performance will definitely be better than many amplifiers on the market!

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

'+ 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

ZGAR AZ Vape Pods 5.0

ZGAR AZ Vape Pods 5.0

ZGAR electronic cigarette uses high-tech R&D, food grade disposable pod device and high-quality raw material. All package designs are Original IP. Our designer team is from Hong Kong. We have very high requirements for product quality, flavors taste and packaging design. The E-liquid is imported, materials are food grade, and assembly plant is medical-grade dust-free workshops.

From production to packaging, the whole system of tracking, efficient and orderly process, achieving daily efficient output. WEIKA pays attention to the details of each process control. The first class dust-free production workshop has passed the GMP food and drug production standard certification, ensuring quality and safety. We choose the products with a traceability system, which can not only effectively track and trace all kinds of data, but also ensure good product quality.

We offer best price, high quality Pods, Pods Touch Screen, Empty Pod System, Pod Vape, Disposable Pod device, E-cigar, Vape Pods to all over the world.

Much Better Vaping Experience!

ZGAR AZ Vape 5.0 Pods,ZGAR AZ Vape Pods 5.0,ZGAR AZ Vape Pods 5.0 Pod System Vape,ZGAR AZ Vape Pods 5.0 Disposable Pod Vape Systems

Zgar International (M) SDN BHD , https://www.oemvape-pen.com