林凯音响音频传输模块MM04_SPEC

广州唯创电子有限公司MP3录音模块WT2000B03模块V1.042020-09-10Note：WAYTRONIC ELECTRONIC CO.,LTD.reserves the right to change this document without prior rmation provided by WAYTRONIC is believed to be accurate and reliable.However,WAYTRONIC makes no warranty for any errors which may appear in this document.Contact WAYTRONIC to obtain the latest version of device specifications before placing your orders.No responsibility is assumed by WAYTRONIC for any infringement of patent or other rights of third parties which may result from its use.In addition,WAYTRONIC products are not authorized for use as critical components in life support devices/systems or aviation devices/systems,where a malfunction or failure of the product may reasonably be expected to result in significant injury to the user,WT2000B03模块使用说明书V1.04模块简介WT2000B03是一款功能强大的新型高品质MP3模块，从多方位满足客户的要求。

深圳红松科技有限公司 2.4GHz数字无线音频模块H S24G01（R/T）2.4GHz数字无线音频模块HS24G01（R/T）应用手册日期： 2011-09版本： HS24G01R/V03深圳红松科技有限公司版权所有,如有变更恕不另行通知第1页共11 页深圳红松科技有限公司 2.4GHz数字无线音频模块H S24G01（R/T）目录一、产品型号及说明 (3)二、产品介绍及其应用 (3)2.1 工作原理示意图2.2功能特点2.3应用范围三、技术参数 (5)四、模块引脚接口及描述………………………………………………………………6,7五、模块应用参考电路原理图 (8)六、测试板工作使用说明 (9)七、模块尺寸图 (11)第2页共11 页深圳红松科技有限公司 2.4GHz 数字无线音频模块 H S24G01（R/T ） 第 3 页 共 11 页一． 产品型号及说明产品型号型号说明 HS24G01R 数字无线音频接收模块 HS24G01T-L 数字无线音频立体声发射模块 HS24G01T-Y 数字无线音频单声道发射模块 HS24G01T-D 数字无线动圈麦克风发射模块 HS24G01T-Z数字无线驻极体麦克风发射模块二． 产品介绍及其应用HS24G01(R/T) 是一款数字无线音频收发模块，该模块具有体积小、音质好、信噪比 高、工作电压范围宽、使用简单方便，抗干扰性强等特点。

2.1 工作原理示意图深圳红松科技有限公司 2.4GHz数字无线音频模块H S24G01（R/T）2.2功能特点模块尺寸小：发射模块40x18(mm)；接收模块34x18(mm)使用全球免许可I SM频段：2400-2483MHz，分为20个工作信道，最多可设置125个工作信道。

支持一对一以及一对多工作模式。

每个模块设计有随机I D，防止相互干扰无线输出功率：最大100mW，可根据客户需求定制不同发射功率（0-20dBm）采用世界级高品质数字音频处理芯片，采样频率48KHz，16bit精度，音质好。

RACK-UP® SERIESModel RU-MX4LPro Audio Line Level Mixer∙Four Channel Line-Level Audio Mixer∙XLR Balanced, Phono Jack Unbalanced Inputs∙Mic or Line XLR Output, Switchable∙Unbalanced Line Output and Direct Input∙Studio Quality, Low-Noise Performance∙Expansion Bussing Capability∙Additional Line Inputs Bussed to an RU-MX4∙Output Isolation Transformer (RU-MX4LT)The RU-MX4L is part of the group of RDL RACK-UP products. The compact design permits high-density installations, with three products mounted in a single rack unit. The RU-MX4L may be used alone, or mounted using a wide variety of RACK-UP series options.APPLICATION: The RU-MX4L is the ideal choice in many applications where a combination of balanced line and/or unbalanced line-level signals need to be mixed. All balanced connections are made through XLR connectors. Unbalanced signals are coupled through phono jacks. The RU-MX4L may be used as a standalone mixer, or may be connected to an RDL RU-MX4 Mic/Line Mixer to provide four additional line level inputs.Each of the four RU-MX4L inputs can accept either a balanced XLR line or an unbalanced line-level phono jack input.A separate unbalanced DIRECT input allows an external audio source to be summed directly into the mix amplifier, bypassing the front-panel input level controls. The unbalanced phono jack LINE OUTPUT from one RU-MX4L may connect to the unbalanced input of other equipment, or may be connected to the DIRECT input of another RU-MX4L or an RU-MX4 to expand mixing capabilities. Up to 3 RU-MX4 type mixers may be rack mounted in a single rack unit using a rack adapter. A power interconnect cable is supplied with each RU-MX4L allowing the rack mounted mixers to run from a single 24 Vdc power supply.The RU-MX4L provides one balanced output, switchable for mic or line level. The balanced XLR output and the unbalanced phono jack output may be used at the same time.Audio levels are adjustable on the front panel. A convenient label area is provided below each fader knob. A label tab included with the mixer may be professionally labeled using a commercial lettering machine, or the user may write on the front of the tab. The tab locks into a protected pocket inside the RU-MX4L front panel for a professionally labeled appearance.Each input channel is equipped with a front-panel dual-LED VU meter that follows standard VU ballistics. A green LED illuminates at 15 dB below the optimum input gain, becoming progressively brighter with increasing audio level. The adjacent red LED illuminates when the input gain exceeds the correct operating level. Maximum headroom and signal-to-noise are assured when these individual input meters are used to correctly adjust each input gain.The final mix is displayed on an LED string VU meter featuring a visually comfortable arc motion. An optional security cover (RU-MX4SC) is available to prevent user access to the rear panel switches. The RU-MX4L is electronically balanced. A factory installed output isolation transformer is available by ordering the RU-MX4LT.Wherever a line-level mixer is needed to provide superior audio clarity, user adjustments, reliability, compactness and unsurpassed versatility, the RU-MX4L is the ideal choice.RDL ∙ 659 6th St. ∙ Prescott, AZ., USA 86301 ∙ (928) 443-9391 ∙ FAX (928) 443-9392 ∙RACK-UP ® SERIES Model RU-MX4LProfessional Audio Line MixerTYPICAL PERFORMANCEBalanced Line Inputs(4): 20 k Ω balanced bridging Balanced Line Input Level: -13 to +22 dBu for +4 dBu output Unbalanced Line Inputs (4): 2 k Ω unbalanced Unbalanced Line Input Level: -25 dBV to +20 dBV for +4 dBu output; -10 dBV nominal Gain Adjustments (5): Balanced Line: Off to 17 dB gain Unbalanced Line: Off to 27 dB gain Output Attenuator: 0 dB to infinity Frequency Response: 20 Hz to 30 kHz (+/- 0.25 dB) THD+N: < 0.01% Residual Noise (below +4dBu output): 4 line level sources (unity gain): < -82 dB (wideband) Outputs (2): +4 dBu 150 Ω balanced (switchable MIC or LINE ); -10 dBV unbalanced Indicators (17): Dual-LED VU meter for each input; POWER LED; 8-segment bar mode string LED audio mix level meter, 0 dB = +4 dBu VU ballistic: -20 dB, -10 dB, -6 dB, -2 dB, 0 dB, +3 dB; Peak reading: +8 dB,+12 dB Power Requirement: 24 Vdc @ 150 mA, Ground-referencedOverall Dimensions: Height: 1.7 in. 4.3 cmLength: 5.8 in. 15.0 cmDepth: 4.8 in. 12.2 cmInstallation/OperationDeclaration of Conformity available from . Sole EMC specifications provided on product package. Specifications are subject to change without notice. 891-3195D Radio Design Labs Technical Support Centers U.S.A. (800) 933-1780, (928) 778-3554; Fax: (928) 778-3506 Europe [NH Amsterdam] (++31) 20-6238 983; Fax: (++31) 20-6225-287。

DFR02992020/6/3DFPlayer_Mini_SKU_DFR0299-DFRobot(https:///product-1121.html)IntroductionThe DFPlayer Mini MP3 Player For Arduino (https:///product-1121.html) is a small and low price MP3 module with an simplified output directly to the speaker. The module can be used as a stand alone module with attached battery, speaker and push buttons or used in combination with an Arduino UNO (https:///product-610.html) or any other with RX/TX capabilities.Specificationsupported sampling rates (kHz): 8/11.025/12/16/22.05/24/32/44.1/4824 -bit DAC output, support for dynamic range 90dB , SNR support 85dBfully supports FAT16 , FAT32 file system, maximum support 32G of the TF card, support 32G of U disk, 64M bytes NORFLASHa variety of control modes, I/O control mode, serial mode, AD button control modeadvertising sound waiting function, the music can be suspended. when advertising is over in the music continue to playaudio data sorted by folder, supports up to 100 folders, every folder can hold up to 255songs30 level adjustable volume, 6 -level EQ adjustableApplication2020/6/3DFPlayer_Mini_SKU_DFR0299-DFRobot Car navigation voice broadcast;Road transport inspectors, toll stations voice prompts;Railway station, bus safety inspection voice prompts;Electricity, communications, financial business hall voice prompts;Vehicle into and out of the channel verify that the voice prompts;The public security border control channel voice prompts;Multi-channel voice alarm or equipment operating guide voice;The electric tourist car safe driving voice notices;Electromechanical equipment failure alarm;Fire alarm voice prompts;The automatic broadcast equipment, regular broadcast.Pin MapWork Mode1. Serial ModeSupport for asynchronous serial communication mode via PC serial sending commands Communication Standard:9600 bps Data bits :1 Checkout :none Flow Control :none Instruction DescriptionSerial Control CmdSerial Query Cmd2. AD KEY ModeWe use the AD module keys, instead of the traditional method of matrix keyboard connection, it is to take advantage of increasingly powerful MCU AD functionality, Our module default configuration 2 AD port, 20 key resistance distribution.Refer diagram3. I/O ModeHere comes the most simple way to use this module.Refer diagramConnection DiagramNote: For simple use ,the upper diagram is ready,But if you find the noise is quite loud, then you could attach an 1K resistor to the TX pin.Copy your mp3 into you micro SD cardNOTE: The order you copy the mp3 into micro SD card will affect the order mp3 played , which means play(1) function will play the first mp3 copied into micro SD card.For Mac UserNOTE: If you are using Mac OS X to copy the mp3, the file system will automatically add hidden files like: "._0001.mp3" for index, which this module will handle as valid mp3 files. It is really annoying. So you can run following command in terminal to eliminate those files.dot_clean /Volumes/<SDVolumeName>Please replace the to the volume name of your SD card.Sample CodeWe've created an Arduino library for DFPlayer Mini to simplify the method for you to make it work. Connect the hardware as the picture above shown and play with the sample code. You can download the latest library here: DFRobotDFPlayerMini(https:///DFRobot/DFRobotDFPlayerMini/archive/1.0.3.zip).Sample code "GetStarted", switching to next song every 3 seconds/***************************************************DFPlayer - A Mini MP3 Player For Arduino<https:///index.php?route=product/product&product_id=1121>***************************************************This example shows the basic function of library for DFPlayer.Created 2016-12-07By[Angeloqiao](***********************)GNU Lesser General Public License.See </licenses/> for details.All above must be included in any redistribution****************************************************//***********Notice and Trouble shooting***************1.Connection and Diagram can be found here<https:///wiki/index.php/DFPlayer_Mini_SKU:DFR0299#Connection_Diagram>2.This code is tested on Arduino Uno, Leonardo, Mega boards.****************************************************/#include "Arduino.h"#include "SoftwareSerial.h"#include "DFRobotDFPlayerMini.h"SoftwareSerial mySoftwareSerial(10, 11); // RX, TXDFRobotDFPlayerMini myDFPlayer;void printDetail(uint8_t type, int value);void setup(){mySoftwareSerial.begin(9600);Serial.begin(115200);Serial.println();Serial.println(F("DFRobot DFPlayer Mini Demo"));Serial.println(F("Initializing DFPlayer ... (May take 3~5 seconds)"));if (!myDFPlayer.begin(mySoftwareSerial)) { //Use softwareSerial to communicate with mp3 Serial.println(F("Unable to begin:"));Serial.println(F("1.Please recheck the connection!"));Serial.println(F("2.Please insert the SD card!"));while(true);}Serial.println(F("DFPlayer Mini online."));myDFPlayer.volume(10); //Set volume value. From 0 to 30myDFPlayer.play(1); //Play the first mp3}void loop(){static unsigned long timer = millis();if (millis() - timer > 3000) {timer = millis();myDFPlayer.next(); //Play next mp3 every 3 second.}if (myDFPlayer.available()) {printDetail(myDFPlayer.readType(), myDFPlayer.read()); //Print the detail message from }}void printDetail(uint8_t type, int value){switch (type) {case TimeOut:Serial.println(F("Time Out!"));break;case WrongStack:Serial.println(F("Stack Wrong!"));break;case DFPlayerCardInserted:Serial.println(F("Card Inserted!"));break;case DFPlayerCardRemoved:Serial.println(F("Card Removed!"));break;case DFPlayerCardOnline:Serial.println(F("Card Online!"));break;case DFPlayerPlayFinished:Serial.print(F("Number:"));Serial.print(value);Serial.println(F(" Play Finished!"));break;case DFPlayerError:Serial.print(F("DFPlayerError:"));switch (value) {case Busy:Serial.println(F("Card not found"));break;case Sleeping:Serial.println(F("Sleeping"));break;case SerialWrongStack:Serial.println(F("Get Wrong Stack"));break;case CheckSumNotMatch:Serial.println(F("Check Sum Not Match"));break;case FileIndexOut:Serial.println(F("File Index Out of Bound"));break;case FileMismatch:Serial.println(F("Cannot Find File"));break;case Advertise:Serial.println(F("In Advertise"));break;default:break;}break;default:break;}}Sample code "FullFunction", including all the functions. Please read the comments and documents in detail2020/6/3DFPlayer_Mini_SKU_DFR0299-DFRobot/***************************************************DFPlayer - A Mini MP3 Player For Arduino<https:///index.php?route=product/product&product_id=1121>***************************************************This example shows the all the function of library for DFPlayer.Created 2016-12-07By[Angeloqiao](***********************)GNU Lesser General Public License.See </licenses/> for details.All above must be included in any redistribution****************************************************//***********Notice and Trouble shooting***************1.Connection and Diagram can be found here<https:///wiki/index.php/DFPlayer_Mini_SKU:DFR0299#Connection_Diagram>2.This code is tested on Arduino Uno, Leonardo, Mega boards.****************************************************/#include "Arduino.h"#include "SoftwareSerial.h"#include "DFRobotDFPlayerMini.h"SoftwareSerial mySoftwareSerial(10, 11); // RX, TXDFRobotDFPlayerMini myDFPlayer;void printDetail(uint8_t type, int value);void setup(){mySoftwareSerial.begin(9600);Serial.begin(115200);Serial.println();Serial.println(F("DFRobot DFPlayer Mini Demo"));Serial.println(F("Initializing DFPlayer ... (May take 3~5 seconds)"));if (!myDFPlayer.begin(mySoftwareSerial)) { //Use softwareSerial to communicate with mp3 Serial.println(F("Unable to begin:"));Serial.println(F("1.Please recheck the connection!"));Serial.println(F("2.Please insert the SD card!"));while(true);}Serial.println(F("DFPlayer Mini online."));myDFPlayer.setTimeOut(500); //Set serial communictaion time out 500ms//----Set volume----myDFPlayer.volume(10); //Set volume value (0~30).myDFPlayer.volumeUp(); //Volume UpmyDFPlayer.volumeDown(); //Volume Down//----Set different EQ----myDFPlayer.EQ(DFPLAYER_EQ_NORMAL);// myDFPlayer.EQ(DFPLAYER_EQ_POP);// myDFPlayer.EQ(DFPLAYER_EQ_ROCK);// myDFPlayer.EQ(DFPLAYER_EQ_JAZZ);// myDFPlayer.EQ(DFPLAYER_EQ_CLASSIC);// myDFPlayer.EQ(DFPLAYER_EQ_BASS);//----Set device we use SD as default----// myDFPlayer.outputDevice(DFPLAYER_DEVICE_U_DISK);myDFPlayer.outputDevice(DFPLAYER_DEVICE_SD);// myDFPlayer.outputDevice(DFPLAYER_DEVICE_AUX);// myDFPlayer.outputDevice(DFPLAYER_DEVICE_SLEEP);// myDFPlayer.outputDevice(DFPLAYER_DEVICE_FLASH);//----Mp3 control----// myDFPlayer.sleep(); //sleep// myDFPlayer.reset(); //Reset the module// myDFPlayer.enableDAC(); //Enable On-chip DAC// myDFPlayer.disableDAC(); //Disable On-chip DAC// myDFPlayer.outputSetting(true, 15); //output setting, enable the output and set the ga //----Mp3 play----myDFPlayer.next(); //Play next mp3delay(1000);myDFPlayer.previous(); //Play previous mp3delay(1000);myDFPlayer.play(1); //Play the first mp3delay(1000);myDFPlayer.loop(1); //Loop the first mp3delay(1000);myDFPlayer.pause(); //pause the mp3delay(1000);myDFPlayer.start(); //start the mp3 from the pausedelay(1000);myDFPlayer.playFolder(15, 4); //play specific mp3 in SD:/15/004.mp3; Folder Name(1~99); delay(1000);myDFPlayer.enableLoopAll(); //loop all mp3 files.delay(1000);myDFPlayer.disableLoopAll(); //stop loop all mp3 files.delay(1000);myDFPlayer.playMp3Folder(4); //play specific mp3 in SD:/MP3/0004.mp3; File Name(0~65535) delay(1000);myDFPlayer.advertise(3); //advertise specific mp3 in SD:/ADVERT/0003.mp3; File Name(0~65 delay(1000);myDFPlayer.stopAdvertise(); //stop advertisedelay(1000);myDFPlayer.playLargeFolder(2, 999); //play specific mp3 in SD:/02/004.mp3; Folder Name(1 delay(1000);myDFPlayer.loopFolder(5); //loop all mp3 files in folder SD:/05.delay(1000);myDFPlayer.randomAll(); //Random play all the mp3.delay(1000);myDFPlayer.enableLoop(); //enable loop.delay(1000);myDFPlayer.disableLoop(); //disable loop.delay(1000);//----Read imformation----Serial.println(myDFPlayer.readState()); //read mp3 stateSerial.println(myDFPlayer.readVolume()); //read current volumeSerial.println(myDFPlayer.readEQ()); //read EQ settingSerial.println(myDFPlayer.readFileCounts()); //read all file counts in SD cardSerial.println(myDFPlayer.readCurrentFileNumber()); //read current play file numberSerial.println(myDFPlayer.readFileCountsInFolder(3)); //read fill counts in folder SD:/0 }void loop(){static unsigned long timer = millis();if (millis() - timer > 3000) {timer = millis();myDFPlayer.next(); //Play next mp3 every 3 second.}if (myDFPlayer.available()) {printDetail(myDFPlayer.readType(), myDFPlayer.read()); //Print the detail message from }}void printDetail(uint8_t type, int value){switch (type) {case TimeOut:Serial.println(F("Time Out!"));break;case WrongStack:Serial.println(F("Stack Wrong!"));break;case DFPlayerCardInserted:Serial.println(F("Card Inserted!"));break;case DFPlayerCardRemoved:Serial.println(F("Card Removed!"));break;case DFPlayerCardOnline:Serial.println(F("Card Online!"));break;case DFPlayerPlayFinished:Serial.print(F("Number:"));Serial.print(value);Serial.println(F(" Play Finished!"));break;case DFPlayerError:Serial.print(F("DFPlayerError:"));switch(value){2020/6/3DFPlayer_Mini_SKU_DFR0299-DFRobotNOTE : The folder name needs to be mp3, placed under the SD card root directory, and the mp3file name needs to be 4 digits, for example, "0001.mp3", placed under the mp3 folder. If you want to name it in Both English and Chinese, you can add it after the number, for example,"0001hello.mp3" or "0001后来.mp3".Go Shopping DFPlayer - A Mini MP3 Player (https:///product-1121.html)Category: DFRobot (https:///) > Sensors & Modules(https:///category-156.html) > Modules (https:///category-211.html) category: Product Manual (category__Product_Manual) category: DFR Series(category__DFR_Series) category: Module (category__Module) category: Diagram(category__Diagram) category: DFRobot (category__DFRobot)switch (value) {case Busy:Serial.println(F("Card not found"));break;case Sleeping:Serial.println(F("Sleeping"));break;case SerialWrongStack:Serial.println(F("Get Wrong Stack"));break;case CheckSumNotMatch:Serial.println(F("Check Sum Not Match"));break;case FileIndexOut:Serial.println(F("File Index Out of Bound"));break;case FileMismatch:Serial.println(F("Cannot Find File"));break;case Advertise:Serial.println(F("In Advertise"));break;default:break;}break;default:break;}}DFR0299。

MADE IN FRANCEP a t e n t N ° W O2014/106713 A 1THE SEARCH FOR THE HOLY GRAIL OF DIAPHRAGM TECHNOLOGIESMore than 30 years of Focal traditionThe drive unit is at the very heart of Focal’s work. For more than 30 years we have been exploring the possibilities offered by revolutionary new materials in order to develop the ideal loudspeaker diaphragm. The list is long: Polyglass, "K2" sandwich, "W" sandwich, Kevlar, titanium, Tioxid, beryllium, aluminium-magnesium.The diaphragm is the critical interface for the transducer; it is what sets the air molecules in motion, and the fidelity of the transfer depends on the intrinsic qualities of the material used. Ideally, a diaphragm should satisfy three key but contradictory criteria:• i t must be light so that it willaccelerate quickly.• i t must be rigid so that itfunctions like a piston,• i t must be well damped so thatit does not colour the sound.Across our whole Home, Carand Pro ranges we currentlyuse two different diaphragmtechnologies for mid-woofers:Polyglass for the less costlyranges, "W" and Kevlarsandwich, with their outstandingqualities, for our top of the rangeproducts. (The "K2" sandwich isderived from and very similarto the "W" sandwich). Becausethe “W” sandwich has to bemanufactured by hand, its rangeof application remains limitedfor reasons of cost.Glass sandwich for rigidityIn the course of the last fewyears, many innovationshave appeared as a resultof engineers revisitingnatural materials andcombining them withmodern composites,thus creating new typesof hybrid material.There are very fewsolutions using a singlehomogeneous materialthat satisfy the three keycriteria set out above.Solutions using a mixtureof materials offer a muchwider range of possibilities.Sandwich construction usingthin skins of fiberglass, withwhich we are totally familiarthanks to the "W" sandwich,remains the supreme methodof controlling rigidity.What material for the core?The core of a sandwich materialprovides the mechanicaldamping, which is responsiblefor the sonic neutrality of thediaphragm. We wanted to makeuse of non-woven fibers whichcould be formed into a sandwichcone by a stamping process inorder to automate the formingprocess. This would makesandwich construction, whichhas hitherto been reserved fortop of the range applications,available to a wider range ofproducts. With the "W" sandwichthe only way to form the core inPlexiglas foam and to apply thefiberglass skin is by hand.Flax very quickly became aserious candidate. France isthe main cultivator in Europe offiber flax, principally in Flanders,Picardy, Normandy and the Pas-de-Calais region. French flax isconsidered the best in the world.Flax is one of the oldest textilefiber, which has been cultivatedsince the 4th Century BCand which was used by theEgyptians as a protectivecloth for mummies. A bundle(called “technical fiber” inspinning) is composed of tento forty fibers. Each fiber is asingle, very elongated cell, 6 to10 centimetres in length andwith a diameter of 7 to 40 µm,composed of 70 to 80 per centcellulose.DIAPHRAGM TECHNOLOGIESThe unique qualities of flaxComposite materials have properties suitable for applications where both rigidity and low mass are required. However, their disadvantage is that they lack damping, which leads to very poor control of vibrations. Often, as in the case of sports equipment, it is necessary to apply damping materials to absorb the intrinsic vibration of the material. It is clear that this is a particularly critical issue for loudspeaker diaphragms, one which requires us to ensure that there is sufficient internal damping within the structure of the material. Recent developments in this field combining composites and natural fibers have brought unexpected opportunities.Flax is twice as lig ht as fiberglass, because the fiber is hollow. It also has very low elasticity which makes it idealto increase the flexural rigidity of our sandwich. Moreover, it can be obtained in non-woven bundles of considerable diameter and it can therefore produce the thickness required for a sandwich. Synthetic fibers or foams originating from petrochemical resources are subject to inflation linked to the sharp rise in crude oilprices. Organic or ecological textiles, like flax, are thus becoming more and more price-competitive. Flax combines the three key factors required of the core of a sandwich material for loudspeakers: it has low density, a high tensile (Young’s) modulus of elasticity of up to 60GPa, and excellent internal damping.PS 165FX (high-end powerful new Car Audio 2-way component).Flax offers unique qualities: light because it is hollow and very low elasticity. It constitutes a choice suitable for the manufacture of the core of a sandwich structure.France is the largest producer of flax in Europe. French flax fiber is considered one of the worlds best. Cropped in Flanders, Picardy and Normandy it enjoys very favorable climatic conditions.Performance comparison of various solutionsMany prototypes have been developed by Focal in the course of the last two years using diaphragms made from single materials (including metals and thermoplastics), composites (with thermosetting, thermoplastic and acrylic matrices) and even in coated paper. We very quickly restricted our choice to composite/sandwich structures: single-skin structures with a pre-impregnated glass fiber face and a rear woven or non-woven linen face, and sandwich structures with internal and external skins in pre-impregnated glass fiber on a core of braided or non-braided flax, with straight or semi-exponential cone profiles.A measurement report was developed internally to makeour research less empirical.At each stage test samples were produced to assess the mechanical performance of the new structures. To provide reference data, test samples of Polyglass and "W" sandwich in different thicknesses, as well as aluminium and glass fiber, were also produced so that we could validate our experiments with reference to known materials.Five criteria were analysed, with results that are shown in the graphs which follow. The designations for the sandwich structures are:• "W" sandwich/Focal patent: introduced in 1995, this is a sandwich with glass fiber on both sides of a core of acrylic/Plexiglass foam.• "F" sandwich/Focal patented in 2013 (N° 1350116): this is asandwich with glass fiber on both sides of a core of flax. It will be used in Focal products from 2013.Low mass – a guarantee of high dynamic performance[Graph 1] For a 165mm mid-woofer, the mass of the diaphragm required to conserve good sensitivity is of the order of 10 grams. This corresponds to an ideal surface mass of the order of 300g/m 2. The diagram opposite shows that a 2 mm thick "W" sandwich due to its mass is more suitable for application in pure woofer. Aluminium needs to be used in a very fine thicknesses of 0.1mm, which is completely impractical. It appears in the list only to validate the coherence of our tests.Glass 0.04mmGlass 0.04mmDetails for midrange driverGraph 1: Surface Mass in g/m 2600.00450.00300.00150.00"W" san d w"W " s a n d w i c "F " s a n d w i c P o l y g l a s s 0A l u m i n u m F i b e r g l a s s 0Car Audio “Flax” component kits: 100% Focal technology for the new high end of Performance Expert range.High tensile modulus – a g uarantee of extended frequency response [Graph 2] Young’s modulus represents the mechanical load which would cause elongation of 100 per cent of the initial length of a material, if it were possible to apply it. In reality, the material is permanently deformed or breaks well before this value is attained. If the Young’s modulus of a material is high it is said to be rigid. It is easy to understand that the higher the Young’s modulus of the core of a sandwich material, the more resistant tobending it will be and the bettera loudspeaker diaphragm madefrom the material will functionas rigid piston. Flax has a highYoung’s modulus of 60GPa, ofthe same order of magnitudeas the glass or Kevlar fibers oraluminum.High internal damping – aguarantee of neutrality[Graph 3]Internal damping ischaracterised by a coefficientknown as the dissipationfactor. At the diaphragm’s"breakup" frequency, thehigher the dissipation factor,the less severe the resonanceas surplus energy is dissipatedwithin the material. This is aguarantee of low coloration,of true tonality. Aluminiumhas very poor dampingqualities, which disqualifies itirretrievably. Polyglass, with itscellulose pulp base, is excellentin this respect (the reputation of‘paper’ diaphragms is alreadywell known to loudspeakerdesigners); "F" sandwichperforms very well too."W"s a nd w"W"s a nd w ic"F"s a nd w ic hP o l yg l a ss0A l um i nu mF i b er g l as s0 Graph 2: Young’s modulus in GPa(logarithmic scale)100.00 10.00 1.00Graph 3: Dissipation factor tan delta 0.050.040.030.01High speed of sound in the diaphragm – a guarantee of definition[Graph 4] An importantcriterion, the speed of sound propagation in a diaphragm is directly proportional to its breakup frequency. The speedof sound of the flax sandwichis on a par with that of theguarantee of high definition in the midrange. Polyglass, which was introduced nearly 30 years ago, now falls far short of the hybrid materials developed by Focal in the interim.High flexural stiffness – a guarantee of well controlled bass[Graph 5] This parameterdefines how stiff the diaphragm is in bending. High bending stiffness is an essential criterion for a diaphragm working at bass frequencies, where significant differences in the air pressure on either face can otherwise cause deformation. High flexural rigidity brings a material close to the theoretical ideal of a diaphragm functioning as a rigid piston over its entire passband.The advantage of sandwich construction is obvious here since flexural rigidity increases with diaphragm thickness. As the lower graph shows, the “W” sandwich is without rival in this regard. Despite its relative thinness, the flax sandwich is nearly three times stiffer than the thicker Polyglass alternative.SummaryTo design a high performance diaphragm you have to optimise a complex set of criteria, which are for the most part contradictory. The composite solution using flax in a sandwich structure with fiberglass skins is a very harmonious way of combining low mass with high internal damping, high velocity of sound and high flexural rigidity.[Graph 6]"W " s a n d w "W " s a n d w i c "F "s a n d w i c h P o l y g l a s s 0A l um i n u m 0F i b e r g l a s s 0.6.0004.5003.0001.500"W " s a n d w "W " s a n d w i c "F "s a n d w i c h P o l y g l a s s 0A l u m i n u m F i b e r g l a s s 0Graph 5: Flexural rigidity index(logarithmic scale)100010010106.0005.0004.0003.0002.0001.00000.0000.0100.0200.0300.0400.0500.060AluminumFiberglassPolyglassIdeal"W" sandwich"F" sandwichGraph 6 : Internal damping (tan delta)S p e e d o f s o u n d (m /s )2013 new product - Aria 948 Black High GlossBetween Chorus and Electra, the Aria 900 line will be the first to be equipped with "Flax" cones.Based on these analyses, t h e d i a p h ra g m s we re manufactured to evaluate, in full scale, their performance in a blind listening trial. We decided to conduct the tests using a Chorus 806V and a Chorus 806W. Focal has a long tradition and recognised expertise in designing two-way bookshelf speakers, which require a mid-woofer whose diaphragm must satisfy all the contradictory demands already identified: high rigidity for good bass combined with high internal damping to avoid coloration in the midrange. All the prototypes not using sandwich construction were rejected because their bassperformance was inferior to that of Polyglass.Flexural rigidity can also be improved by adjusting the geometry of the cone. The semi-exponential profiles give very good results, for example, with Polyglass because we reinforce the stiffness. With the sandwich structures, which are intrinsically stiffer, we have favoured straight cones as they deliver tighter bass. The "F" sandwich based on flax has a promising future: its qualities in the midrange are in total accord with our brand values, since Focal sound is characterised in particular by therichness of reproduction in the midrange register. Moreover, the industrial p ro ce ss d eve lo p e d to manufacture this material bring it within reach of product ranges such as Aria 900 for the home or Performance Series for the car, very price-competitive ranges which could not aspire to the "W" sandwich for reasons of cost. [Graph 7]Graph 7: Relative cost / Polyglass base12345"W" Sandwich"F" SandwichPolyglassFOCAL® is a registered trademark of FOCAL-JMLAB®Focal-JMlab® - BP 374 - 108, rue de l’Avenir - 42353 La Talaudière cedex - France.Tel. +33 (0) 477 435 700 - Fax + 33 (0) 477 435 704 - © 2013 Focal-JMlab®. SCAB -140929/4Due to constant technological advances, Focal-JMlab® reserves its right to modify specifications without notice. - Images may not conform exactly to specific product - Photos L’Atelier Sylvain Madelon。

WT2003B01 MP3音频解码模块模拟U盘版本使用说明书V1.00模块简介WT2003B01是深圳唯创知音电子有限公司研发的一款小巧的新型高品质MP3模块，支持MP3音频解码。

模块体积更小，响应速度也更快。

模块内置存储介质，并具有USB接口，可以通过PC机自由更换FLASH的音频内容。

模块具有USB声卡功能，且内置1瓦功放，可以直接驱动1W的喇叭，使用更方便。

1.产品特点小巧美观，保密性强；支持MP3高品质音频格式，声音优美；可通过PC机直接下载语音到模块；支持USB声卡功能；同时支持按键控制和一线串口通讯，功能更强，控制更灵活方便；内置1W功放，直接驱动8欧姆/1W喇叭，声音洪亮，并具有16级可调音量；DC 5V供电；内置容量可选4Mbit~128Mbit。

2.引脚描述P01P07WT2003B013.技术规格注:VCC33不要给外部的设备供电，避免影响WT2003电源的稳定，导致音质差。

一般用于外部上拉电阻等小功耗的外围器件供电。

5.控制模式WT2003B01具有两种控制模式：按键控制模式和一线串口通讯。

两种控制方式同时有效，客户可根据需要设计应用电路。

5.1. 按键控制7.3扩展按键应用电路ADKEY 按键可以根据客户需要适当调整，阻值按照我们常用阻值分配。

5.2. 一线串口通讯内置存储器最多可放置3584段音频，音频文件使用模拟U 盘下载到存储中。

单片机发送16位的音频地址即可触发相应的音频。

音频地址(0x0001-0x0E00)命令码描述(0xFFE0-0xFFFE)控制时序：先把数据线拉低5ms后，发送16位数据，先发送高位，再发送低位。

使用高电平和低电平比例来表示每个数据位的值。

注意：必须高电平在前，低电平在后。

推荐使用200us：600us。

注意使用3:1和1:3电平比例以保障通讯稳定。

6.程序范例MCU：SH88F4051 晶振：4MHz#include <intrins.h>#define UC8 unsigned char#define UI16 unsigned int/************************************************************************************* *********//函数名: ONE_LINE(U16 COM_data)////功能说明:发送一个一线串口命令////入口参数:COM_data为语音地址或者命令////出口参数:无************************************************************************************** *********/void ONE_LINE(UI16 COM_data){int i;UC8 high_data; //高八位UC8 low_data; //低八位low_data = COM_data & 0x00ff;high_data = (COM_data>>8) & 0x00ff;DATA = 0;Delay_1ms(5); //拉低数据线5毫秒for(i=0;i<8;i++) //发送高八位{if(high_data & 0x80) //数据位为1{DATA = 1;Delay10us(60); //延时600usDATA = 0;Delay10us(20); //延时200us}else //数据位为0{DATA = 1;Delay10us(20); //延时200usDATA = 0;Delay10us(60); //延时600us}high_data = _crol_(high_data,1); //循环左移一位}for(i=0;i<8;i++) //发送低八位{if(low_data & 0x80) //数据位为1{DATA = 1;Delay10us(60); //延时600usDATA = 0;Delay10us(20); //延时200us}else //数据位为0{DATA = 1;Delay10us(20); //延时200usDATA = 0;Delay10us(60); //延时600us}low_data = _crol_(low_data,1);}DATA = 1;}7.应用电路7.1.一线串口通讯控制电路注：WT2003的IO端口是3.3V电平，因此可直接与3.3V单片机连接。

语音控制器说明书V1.2(型号：DL04)(低电平版)秦皇岛千目电子有限公司电话：************传真：************/1.产品特性 (2)2.产品图片、接口介绍 (2)2.1产品外形和接口图片 (2)2.2接口介绍 (3)3.音频信息下载 (3)3.1准备音频文件 (3)3.1.1软件合成音频文件 (3)3.1.2音频文件转换MP3格式 (3)3.2下载语音 (3)3.2.1USB口连接PC (4)3.2.2产生U盘 (4)3.2.3格式化U盘 (4)3.2.4复制文件夹 (4)3.2.5下载完成 (4)4.控制方式 (5)5.参数设置 (5)6.技术支持及联系方式 (6)语音控制器说明书(型号：DL04)DL04语音控制器千目电子推出的一款新型语音产品。

具有价格低、稳定可靠、可更换语音等特点。

可广泛应用于工业控制、安防报警、语音提示等场合。

1.产品特性●MP3格式语音存储，可播放提示语音和音乐，音质更好。

●板载FLASH存储器，成本低、可靠性更好。

●USB口直接下载语音信息，操作方便。

●4路光耦隔离输入控制信号，可以控制4路语音播放。

●性能参数工作电源电压：直流12-24V工作温度：-20～85℃外接喇叭参数：8欧10W2.产品图片、接口介绍2.1产品外形和接口图片图1播放器整体图2.2接口介绍◆电源接口V+、G：接12-24V直流电源。

G接电源负极、V+接电源正极。

◆输入1-4：为4路输入信号。

与G短接就可以触发对应的语音播放。

◆USB：USB接口，下载MP3格式的音频文件到模块。

◆指示灯：绿色电源指示灯，上电常亮；红色状态指示灯，有语音播放常亮。

◆音频：功放输出接口，可以接音箱、音柱等。

◆音量：调节模块输出音量大小。

◆SPK：无源喇叭输出接口，接8欧10瓦的无源喇叭。

◆控制4、5：二进制组合选择播放控制方式（队列播放、抢先播放和播放不采样）。

◆信号方式1-3：通过二进制组合选择模块的信号输入方式（见第4节控制方式）。

LSD4BT-E66系列产品规格书Product Specification产品名称：E66标准模组(PCB天线)产品型号：LSD4BT-E66文件版本：Rev04文件修订历史序号修改日志修改人审核人文件版本修改日期1初始版本王洪阳孙香涛Rev012018-5-312更新模块通信距离，加入不同连接和广播间隔的功耗数据王洪阳孙香涛Rev022018-10-113更正模块工作参数发射状态CPU主频，区分模块在ACTIVE模式和SLEEP模式的不同TRX电流，增加更多的时间间隔下的功耗数据王洪阳孙香涛Rev032018-12-114加入模块认证信息王洪阳孙香涛Rev042019-3-1目录第1章概述 (4)1.1模块功能特点 (4)1.2应用场合 (4)第2章规格参数 (5)第3章硬件布局及接口说明 (7)3.1外形尺寸图 (7)3.2接口说明 (8)3.3模块认证 (9)第4章应用说明 (10)4.1典型应用注意事项 (10)第5章生产指导 (12)5.1生产指南 (12)5.2模块在底板位置要求 (12)5.3钢网开口设计 (12)5.4回流焊作业指导 (13)第6章产品包装 (14)6.1包装方式 (14)6.2料带尺寸 (14)6.3产品方向 (14)敬告用户 (15)第1章概述E66系列蓝牙模组是基于低功耗、高性能蓝牙SOC芯片研发的一款低功耗高性能蓝牙模组，模组采用邮票孔型接口，预留PCB天线和外置天线两种接口供您选择；模块尺寸小巧，全端口引出，方便使用，可以帮助您减少软硬件投入，轻松实现蓝牙应用的开发。

型号说明LSD4BT-E66PCB天线，型号不包括软件，若为带软件产品，请与销售沟通具体型号以及MPQ等信息1.1模块功能特点●工作电压：1.6~3.6V●设计频率：2402MHz~2480MHz●发射功率：Max9dBm●超高接收灵敏度：-93±1dBm●超远有效通讯距离：30m@0dBm1.2应用场合●智能手机以及平板电脑周边产品●无线可穿戴蓝牙设备●智能灯控，智慧家居，智慧城市第2章规格参数表2-1产品极限参数表2-2模块工作参数@25℃主要参数性能备注最小值典型值最大值工作电压（V ） 1.6 3.3 3.6电源纹波要求峰峰值30mV 以内工作温度（℃）-40/+85正常通讯工作频段(MHz)2402/2480ISM 频段信道个数/40/BLE 协议标准信道个数功耗发射状态(mA)ACTIVE /10.5/2402MHz ，0dBm@16M CPU 完全工作发射状态(mA)SLEEP / 6.58/2402MHz ，0dBm@16M CPU 只有RF 部分工作接收状态(mA)ACTIVE /10.3/2402MHz @16M CPU 完全工作接收状态(mA)SLEEP / 6.09/2402MHz @16M CPU 只有RF 部分工作睡眠状态(uA)/2/发射功率(dBm)-15/7软件可配置接收灵敏度(dBm)/-93/PER<30.8%（BER ＜0.1%）通信协议BLE4.0/4.2接口类型 1.27mm 间距，3边邮票孔通讯距离130m@0dBm芯片配置@0dBm1.“通信距离”受测量周边环境、空气湿度等因素影响，距离是通过手机与模块通信测出，仅作参考。

广州唯创电子有限公司MP3录音模块WT2000B04时间录音模块使用说明书V1.072020-08-29WT2000B04模块使用说明书V1.07模块简介WT2000B04是一款功能强大的新型高品质MP3录音模块，从多方位满足客户的要求。

它可以使用文件夹分类，指定文件名播放和指定索引序号播放两种播放方式，可以更灵活组织你的音频文件,并内置时钟芯片，可以读取录音时间并生成对应文件名。

同样也可以在指定文件夹内按照文件名录音或者按照索引序号录音和播放，并且可以指定删除任何一个文件。

具有读取存储器状态和存储器容量查询等功能，让你随时知道你的存储器状态，使用更灵活。

产品简介Array录音功能1.支持TF卡、U盘录音2.内置时钟芯片，支持时间录音3.支持索引录音和文件名录音4.支持MIC录音、LINE-IN录音、AUX录音音频文件类型1.支持WAV、WMA、MP3高品质音频格式播放2.支持采样率8K-48KHz，比特率32~128Kbps的MP3音频文件存储方式1.支持外挂TF卡（最大32G）和U盘（最大32G）2.128kbps比特率下，32GTF卡和32GU盘分别可存大概25小时的语音语音更换方式1.TF卡：可通过USB接口自由更换TF卡内的音频内容（XP系统、WIN7系统、WIN8系统）播放方式1.可外接耳机播放2.可外接功放芯片再推动喇叭时间设置1.可通过发指令设置时钟芯片的时间2.可通过TM.txt文件设置时钟芯片的时间目录1.产品概述 (5)2.产品特性 (5)3.技术规格 (6)4.电气特性 (6)5.模块管脚介绍 (7)6.功能介绍 (8)6.1.ADC按键控制功能 (8)6.2.串口通信控制指令 (8)6.3.控制协议 (9)6.4.播放类写操作指令 (10)6.4.1.写操作指令返回码格式 (10)6.4.2.指定文件索引播放命令 (10)注意：指定播放时，如果指定的曲目不存在时，停止播放。