一种全电子多路音频切换器

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2024年AV切换器市场规模分析

2024年AV切换器市场规模分析前言AV切换器是一种电子设备，用于将来自多个音频和视频源的输入信号切换到一个或多个输出设备上。

它在家庭影院、会议室、媒体广播、教育和培训等领域得到广泛应用。

本文将对AV切换器市场规模进行分析。

市场规模AV切换器市场规模的衡量主要基于市场价值和出货量。

1. 市场价值根据市场调研数据显示，AV切换器市场自2016年以来一直呈现稳健增长的趋势。

随着数字化技术的不断发展和用户对高品质多媒体体验的需求增加，AV切换器市场规模不断扩大。

据预测，到2025年，全球AV切换器市场的价值将达到X亿美元。

2. 出货量AV切换器的出货量也是市场规模的重要指标之一。

根据行业数据，随着用户对高清视频和音频的需求增加，AV切换器的出货量也在不断增长。

预计到2025年，全球AV切换器的出货量将超过X万台。

市场趋势AV切换器市场存在以下几个显著的趋势：1. 技术创新随着科技的不断进步，AV切换器市场出现了许多技术创新。

例如，HDMI，DisplayPort和USB-C等新一代接口的应用，为AV切换器提供了更高的分辨率、更快的传输速度和更多的功能。

这使得消费者可以享受到更高质量的音视频体验。

2. 无线切换器趋势无线技术的发展也对AV切换器市场产生了影响。

越来越多的用户选择使用无线AV切换器，以便更好地实现设备间的互连和共享。

无线AV切换器不仅提供了更大的灵活性，还省去了繁琐的有线连接，使用户能够更方便地切换不同的音视频信号。

3. 个性化需求AV切换器市场正逐渐向个性化需求方向发展。

消费者对多种输入源和输出设备的需求越来越多样化，他们期望能够自定义AV切换器的功能和设置，以满足自己的特定需求。

这导致市场上出现了更多具有灵活配置选项的AV切换器产品。

主要市场参与者AV切换器市场上存在许多主要参与者，包括：1.公司A：公司A是一家著名的AV切换器制造商，在市场上占有很大份额。

他们的产品以高质量、良好的性能和可靠性而闻名。

Atlona AT-APC21A 2x1 自动 VGA + 立体声音频切换器说明书

Atlona 's 2х1 A utomatic VGA + S tereo A udio S witcher weightSKU#MSRP:2.00 lbs AT-APC21A $139.00• Atlona AT-APC21A 2x1 Signal Sensing Automatic VGA Switcher w/Analog Audio• Wired manual selector• User ManualChannel Select MethodConnector InputConnector OutputSignal TypeVideo BandwidthMaximum VGA ResolutionPower SupplyLED DisplayCasingDimensions (L x W x H in inch)Dimensions (L x W x H in mm)Operating TemperatureStorage TemperatureHumidity Auto Detection Two sets of HDB-15 (female) & 3.5 mm audio jack One set of HDB-15 (female) & 3.5 mm audio jack VGA, XGA, SVGA, UXGA, WUXGA, Multi-Sync, TFT-LCD Monitor 450 MHz 2048x1536Taken from VGA signal or DC 5V power adapter (sold separately)Blue for Channel 1; Green for Channel 2Metal with Magnetic Pad 4.44 x 2.44 x 1.14 113 x 62 x 290° C to 50° C 0° C to 60° C 25% to 75% Non-Condensing• Switch between two VGA w/Audio sources to a single monitorand set of speakers• Supports stereo analog audio through a 3.5mm jack• Perfect for hooking up your laptop or second computer without unpluging the main PC.• Supports VGA, XGA, SVGA, SXGA, UXGA, WUXGA, Multi-Sync and TFT-LCD monitors• Monitor type a uto detect and DDC2B signal on each port• Supports 350 MHz bandwidth for a maximum VGA resolution of 2048x1536• Video enhancement to extend signal up to 30 meters• Auto switch to new connected VGA channel (Auto Detect & Select)• Optional external control button for manual selection• Dual color LED to indicate active channel status• Power-free, electronic design to protect connected devices• Magnetic pad for ease of installation• No software required。

全compass数据视频SE-500混音器切换器产品介绍说明书

351MIxer/A 4-channel mixer featuring S-video (Y/C) include dis-proces-built-in Has S-video SE-500 quad output so only 2 video monitors are needed – onefor all inputs, one for output. The input display will also automatically change to preview the next transition if BLACKMAGIC DesIGN ATeM TeLeVIsION sTuDIO This live production switcher combines a professional PrODuCTION are Control the switchers with the software control panel via broadcast HDMI and HDMI features multi-layering a BrOADCAsT ATEM The trols sources, transitions, keyers, DVE control and more. It has 10 direct cross points and one fader bar. The 2 M/E panel is designed for complex live cross points, 2 fader bars and a second M/E row. Both panels connect via Ethernet and have a loop-thru DESCrIPTION PrICE ATeM-1-Me-BrOADPANeLATeM PrODuCTION sWITCHer sOFTWAre INTerFACeMOTu V4HD FIreWIre VIDeO PrODuCTION INTerFACe MOTu HDx-sDI DIGITAL/ANALOG •Supports Apple ProRes and otherv i d e o s w i t c h e r s , s p e c i a l e f f e c t s & c h a r a c t e r g e n e r a t o r s352Gefen Pro Matrix SerieS The GefenPro 8x8 DVI Dual Link matrixes 8 DVI sources to any 8 dual link monitors. The GefenPro 10x4 DVI DL matrixes 10 DVI sources to any 4 dual link monitors. The GefenPro 16x16 DVI routes 16 DVI sources with 16 monitors and includes push button control. The GefenPro16x16 3G-SDI routes 16 3G-SDI input sources to any 16 3G-SDI locations. All models fea-ture advanced EDID management, a serial RS232 interface for remote control via computer, support DDWG standards for DVI and are rackmountable with included rack ears and include an IR remote control.ITEM DESCRIPTION PRICE GEF-DVI-848DL .....................8x8 DVI Dual Link Pro Matrix ...............................................CALL GEF-DVI-1044DL ...................10x4 DVI Dual Link Pro Matrix .............................................CALL GEF-DVI-16416-PB ...............16x16 DVI Pro Matrix w/push button control ........................CALL GEF-3GSDI-16416.................16x16 3G-SDI Pro Matrix ......................................................CALLdvi-1044dlfor.a HvS-300 SerieS Portable Hd/Sd video SwitcHer and control Panel This 1RU switcher can be operated via the front control panel, by mini panel or through software control. HD resolutions up to 1080/60i, 4:2:2:4 10-bit processing, 4 HD/SD-SDI inputs and outputs each, (frame synchronizer, up-converter, re-size engine on each input). The HVS-300HS is expandable with I/O card options that include DVI-I, HD/SD analog component and analog composite inputs or outputs. The device’s built-in 16-split multiviewer supports 4-, 10- or 16-split view with tally and title display. Also features dual PIP function, an up-stream keyer and DSK (both with 2D DVE), advanced Chroma Key, a variety of 2D and 3D DVE transitions, 100+ wipe patterns and 2 channels of still stores.ITEM DESCRIPTION PRICE HVS-300HS-A ........................1RU HD/SD switcher - remote version .................................CALL HVS-300HS-B ........................1RU HD/SD switcher - standard version ..............................CALL HVS-30RU .............................Remote unit for HVS-300HS ...........................................2173.25HVS-30OU .............................Operation unit for HVS-300HS .............................................CALL HVS-30GUI ............................PC Control software for HVS-300HS...............................1992.14HVS-30HSDI ..........................HD/SD digital input card ...............................................2219.11HVS-30HSDO .........................HD/SD digital output card .............................................2136.79HVS-30HSAI ..........................HD/SD analog input card ...............................................2219.11HVS-30HSAO .........................HD/SD analog output card .............................................2136.79HVS-30PCIN ..........................PC input card.................................................................2136.79HVS-30PCO ...........................PC output card...............................................................2136.79HVS-AUX8..............................8-button aux control box ................................................2400.22HVS-AUX16............................16-button aux control box ..............................................2581.32datavideo Se-2000 Hd-Sdi video SwitcHer This unit fea-tures 13 transitions with border, 5 individual speed keys (for instant selec-tion with take effect), and the ability to insert up to 14 pre-stored logos. Includes 3 dedicated HD-SDI inputs, 1 DVI-D inputand 1 switchable input, a tally output, a DVI-D preview output, and HD-SDI and HD-YUV program output formats. Also features luminance key, PIP, freeze image, memory enough for 5 user presets, RS232 control, and 4-input audio mixer with XLR connectors. 12V DC adapter is included.ITEM DESCRIPTION PRICE SE-2000 ................................HD-SDI video switcher .........................................................CALLdatavideo HS-2000 MobileHd video Production Studio/SwitcHer This unit features a 17" LCD monitor to display multiview out-puts, 1 DVI-D input, 3 HD-SDI inputs and 1 selectable DVI-D/HD-SDI input, a built-in 4-channel audio mixer, a 5-channel wired intercom with belt packs for camera ops. Monitor shows review input, program output, and picture-in-picture preview. Program output allows connection to external digital video recorder, which can be viewed on the unit’s screen. Also fea-tures luma key, built-in TBC & frame synchronizerson all inputs, and HD resolutions up to 1920x1080i and 1280x720p. Comes in a protective aluminum case.ITEM DESCRIPTION PRICE HS-2000 ....................Mobile HD-SDI/DVI video production studio/switcher ......................CALLdatavideo Se-900 Sd SwitcHer SySteM This 8-input SD switch-er has an expand-able core feature set that includeschroma key cards and PIP. This2-piece switcher (control panel andrack mounted processor) is ideal for SD venues.The switcher accepts a mix of 8 input cards for DV, SDI,DVI, YUV and composite. Outputs include DV, SDI, composite, com-ponent and S-video. Each input has a frame synchronizer and TBC. Preview functions include a YUV /composite multi image output with “next source” and “next effect”. The SE-900 caters to DV and SDI formats by including an audio delay for DV, and an optional audio embedder for the SDI stream. The SE-900 is sold as a standalone 2-piece switcher with monitors, monitor racks and cases, or prefigured with different inputs in several different kits (see below). Optional input and function cards are available – call for more details and pricing.ITEM DESCRIPTION PRICE SE-900 ......................SD switcher system (2 pieces) ........................................................CALL SE-900DV-KIT ...........SE-900 w/ (1) SDI overlay card, (1) chroma key card,(6) DV input cards, (2) YUV, CV, S input card ............................................CALLSE-900STD-KIT ..........SE-900 w/ (1) SDI overlay card, (1) chroma key card,(4) DV input cards, (4) YUV, CV, S input card .......................................CALLSE-900SDI-KIT ..........SE-900 w/ (1) chroma key card, (6) SDI in card,(1) SDI out card, (1) external genlock card .....................................CALLMS-900 .....................Configured & wired SE-900 mobile studio – SE-900 switcher,TLM-170M dual 7" LCD monitors, intercom set for eight users, PD-1 AC distribution, DN-300 recorder, RP-17 talkback breakout panel, RP-23 rack mount for DV Bank & Deck, Tray for SE-900,CCS-M1 12 RU table-top mobile case .............................................CALLOptional Cards:900-SDI .....................SDI input card .............................................................................445.00 900-DV25 ..................DV input card ..............................................................................326.00900-YUV ....................YUV, CV, S input card ..................................................................288.00900-DVI .....................DVI input card .............................................................................384.00900-SDI-O .................SDI output card ...........................................................................307.00900-DVK ....................Chroma key card .......................................................................1920.00CG100 .......................CG software only - requires Decklink capture card. (Windows only) ..960.00VP445 .......................HD/SD-SDI distribution amplifier, 1-in, 4-out .............................336.00TLM-170H ..................Desktop 17" 16:9 HD-YUV LED monitor .....................................1632.00Looking for video cables?See pages 504-505353Horita Kct-50cHaracter Generator A stand-alone video character gen-erator with built-in text editor, that works with a standard PC keyboard (no PC required) to superimpose captions and titles of up to nine lines of 20 characters each, on analog composite video. The horizontal and vertical size and position, black/white, mask on/off, and contrast for the characters is user adjustable. Date and time information can also be automatically inserted in a variety of formats. Up to 25 KCT-50s can be connected and controlled from a single PC keyboard.ITEM DESCRIPTION PRICE KCT50........................Character generator ....................................................................374.97GraSS valley indiGo SerieS a/v MixerS The Indigo–SD model offers seamless live switching of standard-def video and audio, as well as computer sources. It also features pre-programmable video layouts with keyers for PIP and other effects, as well as digital effects with 2D & 3Dtransformations. The Indigo–HR model includes hi-def card (INDGO1-HRES-UPG), allowing users to simulcast SD & HD output, as well as upconvert or downconvert multiple video channels into HD or SD video. The Indigo–HR-8 version increases the total number of HD inputs on the HD switcher to 8 HD/SDI inputs (21 total inputs in 2ME mode, 18 total in flat mode) thanks to the addition of the Acappella 8x4 router.ITEM DESCRIPTION PRICE INDGO1-SD ......................A/V mixer w/2D, 3D digital effects ............................................CALL INDGO1-HR .....................HD A/V mixer w/digital effects, SD/HD simulcast,up/down conversion ...................................................................CALLINDGO1-HR-8 ..................HD A/V mixer w/8x4 router .........................................................CALL INDGO1-HRES-UPG .........High-res upgrade card ..............................................................CALL INDGO1-AUDIO-CABLE ....3M AES/EBU digital audio adapter cable ..............................201.83INDGO1-TALLY-ADAPT .....Tally Breakout Adapter w/out cable .......................................881.40INDGO1-TALLY-CABLE .....Tally cable for breakout adapter ..............................................87.75INDGO1-HR-8-UPG ..........8x4 router upgrade for Indigo-HD ..............................................CALL INDGO1-SDHR-8-UPG .....8x4 router upgrade for Indigo-SD ..............................................CALLintelix HiGH-definition twiSted Pair video MatrixeS These units have HDMI inputs, HDMI outputs and twisted pair extender outputs (2 each on the 4x2, 4 each on the 4x4, 8 each on the 8x8). 8x8 features front panel touchscreen for source selection. All models support 1080i and 1080p video and are HDMI 1.3b and HDCP compliant. They are rackmountable, include wireless remote and are controllable by the front panel, Ethernet, IR or RS232. Features 4 pass-through IR channels (8 for 8x8) for distributing remote IR commands from in-room controllers via twisted pair extenders over a maximum of 150ft twisted pair cable.ITEM DESCRIPTION PRICE DIGI-HD-4X2 .............4 HDMI in/2 HDMI, 2 twisted pair out hi-def matrix ....................859.96DIGI-HD-4X4 .............4 HDMI in/4 HDMI, 4 twisted pair out hi-def matrix ..................1719.96DIGI-HD-8X8 .............8 HDMI in/8 HDMI, 8 twisted pair out hi-def matrix ........................CALLintelix flx-8x8a Modular flex Matrix SySteM The FLX-8X8A is a card-based matrix distribution system, consisting of two input and two output slots. Insert any combination of HDMI, DVI, VGA, Y/Pb/Pr Component Video, and/or HDBaseT input cards with HDMI, DVI, and HDBaseT output cards. Use any input type with any output type. This matrix can drive both local and remote zone outputs via twisted-pair cabling. In addition to modules, the unit has built-in RS232 and ethernet connectors, front panel control, EDID management, and a 8x8 balanced stereo audio switcher for whole premise audio capabilities.ITEM DESCRIPTION PRICE FLX-8X8A ..................8x8 flex matrix distribution system .................................................CALL FLX-HI4 .....................4-port HDMI input card ...............................................................880.95FLX-DI4 .....................4-port DVI input card ..................................................................880.95FLX-RI4 .....................4-port RGB, YUV, SV, YC, CV scaling input card .......................2886.95FLX-BI4 .....................4-port HDBaseT input card .......................................................2782.95FLX-HO4 ....................4-port HDMI output card .............................................................880.95FLX-DO4 ....................4-port DVI output card ................................................................880.95FLX-BO4 ....................4-port HDBaseT output card .....................................................2782.95KraMer n e w !diGi-Hd-4x2354roland v-440 Hd and Multi-forMat video Mixer/live SwitcHerCombine any 8 video sources (SD, HD even RGB computer signals up to SXGA)through 1 unit and output them at 720p, 1080i or selectable RGB. Features abuilt-in, high-quality up-converter and scaler, an array of transitions, Picture-in-Picture, as well as 2 keyers (SD and HD). The units are even remote-controllablevia V-LINK from any Roland/Edirol musical instruments or use RS232C for com-puter control.ITEM DESCRIPTION PRICEV440HD .....................HD multi-format video switcher ......................................................CALLroland v-4 four-cHannel videoMixer Compact video mixer ideal forportable or fixed installation use innightclubs, theaters, performance ven-ues, and places of worship. It offersV-LINK for real-time performance con-trol over digital video. Trigger clips,effects, and transitions in real-timewhen connected to the DV-7PR. It alsofeatures MIDI support, TBC / frame syn-chronizer, digital effects, T-Bar fader,audio/video synchronization, and over 200 transition effects.ITEM DESCRIPTION PRICEV4..............................4-channel video mixer ...............................................................1275.00PanaSonic av-HS410 Hd/Sd SMart SwitcHer This powerful, easy-to-use switcher combines the fast functionality of a hard-wired unit with the flexibilityof a computer-based system. This expandable 9-input 1RU unit offers dual-channelvideo clip recording/playback, effects preview, timeline editing and high-quality 2D &3D effects for both key and background transitions. Other features include built-in7” LCD panel with expanded MultiViewer capabilities, HS/SD multi-format support,Primatte® Chroma keying and easy operation. An SDK for plug-in development andfunctionality enhancement is available.ITEM DESCRIPTION PRICEAVHS410 ...................HD/SD video switcher ......................................................................CALLPanaSonic aG-HMx100 diGital a/v Mixer Integrating a HD/SD videoswitcher, frame synchronizer, audio mixer and control panel, this compact digitalA/V mixer offers high quality images via its 12-bit digital processing. Featuresinclude a 5.7" LCD screen that displays a 5-row matrix menu, rotary switches, anauto power off function, an AUX output terminal, a DVI-I input, 2 HDMI channels,and 4 SDI (HD/SD switchable) channels. Other features include multiview func-tion capabilities for single monitor systems, built-in 2D and digital effect func-tions, chroma and luminance keying, pattern preset, event memory, Panasonicprojector control capabilities, and the ability to operate as a 3D video switcher.ITEM DESCRIPTION PRICEAGHMX100 ................Digital A/V mixer w/LCD screen .......................................................CALLPanaSonic awHS50 Multi-forMat live Hd/Sd SwitcHerThis half-rack unit-wide, 4:2:2 HD/SD liveswitcher offers 10-bit processing, built-in MultiViewer (4, 9, or 10 images on asingle display), chroma keyer, AUX buswith an IP link to Panasonic's AWRP50 remote camera controller, and 1080/29.94PsFsupport. Other features include picture-in-picture with dissolve transitions, colorcorrection, linear and downstream keyers, switchable upconversion, auto or manualvideo transitions, frame memories, and wipe and PinP preset memories. It has 4HD-SD-SDI and 1 HD DVI-D inputs – each with 1-bit frame synchronizers, and 2 HD/SD-SDI and 1 scalable DVI-D outputs. The AWHS50 also sports a GPI input, cameratally outputs, an Ethernet control interface, and a 4-pin XLR 12VDC input. Also sup-ports 1080/59.94i, 1080/24PsF, and 720/59.94p.ITEM DESCRIPTION PRICEAWHS50.....................Multi-format live HD/SD switcher .....................................................CALLAWRP50N ..................Remote camera controller ............................................................2189.00 roSS video croSSover Solo Multi-definition ProductionSwitcHer The CrossOver Solo is a powerful, all-in-one production switcher thatfits small spaces and budgets. The main electronics and signal I/O are combinedwithin the panel as a single unit. Features include a built-in multiviewer, input syn-chronization, (4) media store channels, chroma keyer, reference generator, roboticcamera control and a rugged all metal construction. The unit has (10) source buttons,(12) HD-SDI inputs, (3) AUX bus outputs, (1) HD-SDI preview output and (2) HD-SDIprogram outputs.ITEM DESCRIPTION PRICECROSSOVER-SOLO.....All-in-one video switcher ...............................................................CALL355S2-105Pcav1600Hd Mixer or a and the ability to accept a vari-ety of video input formats All-in-one seam-Connect x2, RGB x2, S-Video, and com-posite inputs. Also input still from a USB thumb drive. Output options include n e w。

模拟数字音频切换器

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PSW0301MIX 模拟音频和 AES3 数字音频混合自动切换器使用说明
普庆电子
键、液晶屏和旋转编码开关。后面板上有音频信号输入、输出插座，RS232 串行通讯接口和电源插座。
3.1、前面板
3.1. 1 、“ 电源开关 ” 是交流电源开关，开关拨到 “ 0 ” ，电源断开；开关拨到 “ 1”，
电源闭合。
3.1.2、 “ 输入通道 ” 按键 1～ 3：对应 3 路音频输入通道，用于选择输入通道，按
键自带指示灯，当该通道信号有效时，按键发绿光，反之，按键不发光。当前切换在哪一通道，该通道按键发红光。需要说明的是，当按键同时发绿光和红光时，由于颜色混合效应，按键发光呈黄色。
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PSW0301MIX 模拟音频和 AES3 数字音频混合自动切换器使用说明
安全说明
普庆电子
电源 ——
请使用带保护地的单相三线制电源，并确保整个系统使用同一保护地。不能使用无保护地的电源，电源线的接地脚不能破坏。
断电 ——
需要进行设备移动或其他需要断电的工作时，要关断所有的电源，包括关断外部电源插座，拔掉电源插头，以确保您的安全。
3.2.2、“ RS232 串行通讯 ”接口 COM1，用于连接计算机等外部设备，配合控制软
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PSW0301MIX 模拟音频和 AES3 数字音频混合自动切换器使用说明

音频智能切换器IBS200和IBS300的介绍与对比分析

图１　ＩＢＳ２００的前后面板图２　ＩＢＳ３００的前后面板１．２　显示两种智能切换器都有显示信号电平强度的界面，实时输出信号音量柱。

两种智能切换器信号显示有所不同：图1中，IBS200将每路信号音量柱独立显示，中间有操作按钮隔开；IBS300的输入输出信号的显示都集中在图2U前面板上的黑一路没有信号很容易看出来；而IBS200的分开显示，信号对比不如前者方便，但是它为彩色显示，用颜色来显示信号的强度，过强过弱都一目了然。

图３　ＩＢＳ３００的显示屏图４　ＩＢＳ３００显示屏主界面通过前面板按键“MENU”和“→”键配合可完成显示屏查询。

通过各子菜单可以查看各通道配置情况、独立监测网口（Ether Net）IP地址、AOIP地址和通道名称、电平表界面、AES3时钟锁定IBS300还有D型接口版。

其输入接口为DB37-F：4路AES3或4路模拟立体声或2路AES3+2路模拟立体声输入；当AES3输入时支持无源LOOP 环出，带SRC采样率转换器。

输出接图５　ＩＢＳ２００参数配置图６　ＩＢＳ３００参数配置口为DB37-M：4路AES3或4路模拟立体声或 2路AES3+2路模拟音频输出。

IBS300还有AOIP网络智能版，其前后面板如图7所示。

４　结语本文从功能、操作方法两个方面分析并比较了两种智能切换器IBS200和IBS300。

从外观显示、功能、操作方面两者皆有所不同，而且都有不同的版本，196我们在选用智能切换器可根据自身系统要求和操作要求进行选购。

参考文献：[1]英夫美迪.智能切换器IBS200（音频四选一）用户操作手册v2.2[Z].2014.图７　ＩＢＳ３００ＡＯＩＰ网络智能版前后面板[2]英夫美迪.智能网络音频切换器IBS300（八选一标准版）用户手册V1.0[Z].2015.[3]英夫美迪.智能网络音频切换器IBS300（八选一D型接口版）用户手册V1.1[Z].2015.[4]李朝兵,廖本友.两种广播音频智能切换器对比分析[J].西部广播电视,2013(6):58-60.可以实现3 840×2 160，这也就是HD 的4倍像素，相应的信息量则是HD的３．２　4K电视的技术创新发展趋势4K电视技术势必会走向IP化的道来达到SDR的12倍或者是百倍的亮度。

一种可支持多路音频、视频同时播放的装置设计

计算机时代２１年第１期０１２
・１・３
一
种可支持多路音频视频同时播放的装置设计★
叶惠仙（建农业职业技术学院信息技术系，福建福州３００）福５０７
摘要：介绍了一种可支持多路音频／频同时播放的装置，视该装置可用来实现电脑或电视等多媒体设备在播放多个视
ＹＥｉｘａＨｕ．ｉｎ
（ｕａｏａｏａｃｌｇｇｉｌｒ，ｕｏ，Ｆｊｎ３００，Ｃｉ）ＦｊｎｖｃｔｎｌｏｅｅｏａｒｕｕＦｚｕｕａ５０７ｈｎｉｉｌｆｃｔｅｈｉａ
Ａｂｓｒｃ：Ｔｈａｔｃｅｎｒｄｅｖｃｗｈｃｃｎｔａｔｅｒｉｌｉｔｏｕｃａｄｅｉｅｉｈａｍａｅｋｍｕｔｅｕｏｎｉｅａｓｍｕｌｎｅｕ，ｔｒｕｈｈｓｅｉｎｔｅｓｌｐｌａｄｉａｄｖｄｏｐｌｙｉｉｔｏｓｈｏｇｔｉｄｓｇ，ｉａｇｔ
．音频同时播放方案分析视频或音频，而每个视频或音频能独立拥有多媒体效果，且互１２常用的多路视频、（单声卡多声道输出方式１）不影响。本文将探讨一种能够充分利用资源的设计。本设计
声卡播放音频文件原理：副缓冲区中的数据混合到主多个采用的核心芯片是ＭＣ。ＭＵ提供了一个多功能可编程服务ＵＣ然平台，采用通用编程语言，支持多种图像／语音格式、多种压缩缓冲区中，后再播放主缓冲区内的数据实现声音播放。声卡的主缓冲区有且只有一个，声道可有多个。采用多个声道实现标准和算法，被广泛应用于如数字电视、数字视频记录、会视频

ts3usb221复用器开关模块工作原理

ts3usb221复用器开关模块工作原理下载提示：该文档是本店铺精心编制而成的，希望大家下载后，能够帮助大家解决实际问题。

文档下载后可定制修改，请根据实际需要进行调整和使用，谢谢!本店铺为大家提供各种类型的实用资料，如教育随笔、日记赏析、句子摘抄、古诗大全、经典美文、话题作文、工作总结、词语解析、文案摘录、其他资料等等，想了解不同资料格式和写法，敬请关注!Download tips: This document is carefully compiled by this editor. I hope that after you download it, it can help you solve practical problems. The document can be customized and modified after downloading, please adjust and use it according to actual needs, thank you! In addition, this shop provides you with various types of practical materials, such as educational essays, diary appreciation, sentence excerpts, ancient poems, classic articles, topic composition, work summary, word parsing, copy excerpts, other materials and so on, want to know different data formats and writing methods, please pay attention!TS3USB221复用器开关模块工作原理引言TS3USB221是一种常用的复用器开关模块，用于在不同的输入和输出端口之间切换信号。

具有有线遥控功能的四路视频音频切换器

具有有线遥控功能的四路视频音频切换器
李明显
【期刊名称】《电视技术》
【年(卷),期】1989(000)002
【摘要】本切换器可作为小型电视转播台及闭路电视系统的多节目切换开关使用,图1为某小型电视转播台的设备配置图,切换器置于中频调制器之前,用来选择播出的节目。

本切换器具有四路视频音频切换和音频插入功能,采用有线遥控方式。

【总页数】4页(P29-32)
【作者】李明显
【作者单位】无
【正文语种】中文
【中图分类】TN948.4
【相关文献】
1.在视音频切换器上加装视频自动切换报警电路 [J], 何英慧;曹德新
2.轻触型四选一音频/视频信号切换器 [J], 黄福森
3.四选一视频／音频信号切换器的制作 [J], 黄福森
4.在视音频切换器上加装视频自动切换报警电路 [J], 何英慧;曹德新
5.谈2×1视频·音频自动切换器故障分析与维修 [J], 孔祥辉;金土雄;安美兰
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一种全电子多路音频切换器
全电子音频切换器方框图整个电原理图如图2所示。

时钟电路以IC;(CD4011一4个2输入端与非门)所构成，它是一个产生10kHz方波的振荡器。

当IC，一。

的脚2是逻辑高电平时，产生时钟，当脚2是逻辑低电平时，时钟停止。

当时钟作用时，由ICZ(CD4017一CMOS 计数器)和输入选择开关所构成的键盘编码器将顺序输出逻辑高电平。

清零端(ICZ的脚15)连接到最后一个输出端(ICZ的脚11)，当最后这个输出端被选择时，ICZ的其余输出全部被清零，并重新从第一个输出端开始顺序输出高电平。

IC:的9个输出端通过Dl一D。

(二极管)连接到键盘开关上。

这些二极管用来防止某条输出线上的逻辑高电平反馈到逻辑低电平线上。

尽管每次只有一个开关被压下，但仍然要防止错误出现，例如有时会出现两个开关被压下的情况。

当某个输人选择开关被压下时，所选择的逻辑高电平会反馈到ICZ的输入端脚13，并通过反相器ICI一c传送到振荡器的门电路控制端(ICI一。

的脚2)。

只要一个开关保持压下状态，被选择的ICZ输出端就保持在高电平状态。

当开关复位时，振荡器开始工作，ICZ的输出端又开始顺序处于高电平状态。

有业余演唱。

有影视录象中的卡拉OK演唱，也有舞台演出中的卡拉OK演唱。

有歌厅即兴演唱，也有家庭娱乐演唱。

由于卡拉OK不仅可以视听欣赏，还可以主动参与演唱，使影视艺术和舞台艺术同时进人了家庭。

最初卡拉OK伴唱机只是播放伴奏音乐带并同时输入演唱歌声，后来发展为不仅能利用伴奏录音带，而且还能够利用唱片、录象带、视盘等播放伴唱音乐和图象。

目前卡拉OK伴唱机已是一种具有高保真音乐和高清晰图象的音频设备并采用数字混响器改善演唱音质，美化电声技术10/1996声音和模拟回声效果等，有些则设置了歌声对消器、变调器和自动伴唱功能形成专用声频系统，并且操作方便，例如多功能卡拉OK伴唱机。

朱维仲.电声设备原理及维修.北京兵器工业出版社，1995一种全电子多路音频切换器王惠民随着我国经济建设的不断发展，物质生活水平的不断提高，扩声系统越来越多地应用于车站、机场、码头、宾馆、大型商场和体育场馆等公共场所。

而作为一个公共扩声系统的主要组成部分之一的声频切换器，它的技术性能又直接影响着一个扩声系统整体功能的发挥。

对于一个高质量的扩声系统，应具备多路输入信号的选择，以及一个信号源同时带多个负载的功能，音频切换器就是实现这些功能的设备。

下面介绍一种可提供8套节目源选听，4个分区扩声的全电子音频切换器。

这种全电子多路音频切换/器的原理方框图如图1所示。

它由时钟发生、数据锁存、键盘编码、控制信号及音频信号切换等五个部分组成。

时时钟钟键键盘编码码码控制信号号号音频信信号号号号号号切换换音频信号输出(4路立体声)图l全电子音频切换器方框图整个电原理图如图2所示。

时钟电路以IC;(CD4011一4个2输入端与非门)所构成，它是一个产生10kHz方波的振荡器。

当IC，一。

的脚2是逻辑高电平时，产生时钟，当脚2是逻辑低电平时，时钟停止。

当时钟作用时，由ICZ(CD4017一CMOS计数器)和输入选择开关所构成的键盘编码器将顺序输出逻辑高电平。

清零端(ICZ 的脚15)连接到最后一个输出端(ICZ的脚11)，当最后这个输出端被选择时，ICZ的其余输出全部被清零，并重新从第一个输出端开始顺序输出高电平。