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High Resolution Schemes Using Flux Limiters for Hyperbolic Conservation LawsP.K.SwebySIAM Journal on Numerical Analysis,Vol.21,No.5.(Oct.,1984),pp.995-1011.Stable URL:/sici?sici=0036-1429%28198410%2921%3A5%3C995%3AHRSUFL%3E2.0.CO%3B2-YSIAM Journal on Numerical Analysis is currently published by Society for Industrial and Applied Mathematics.Your use of the JSTOR archive indicates your acceptance of JSTOR's Terms and Conditions of Use,available at/about/terms.html.JSTOR's Terms and Conditions of Use provides,in part,that unless you have obtained prior permission,you may not download an entire issue of a journal or multiple copies of articles,and you may use content in the JSTOR archive only for your personal,non-commercial use.Please contact the publisher regarding any further use of this work.Publisher contact information may be obtained at/journals/siam.html.Each copy of any part of a JSTOR transmission must contain the same copyright notice that appears on the screen or printed page of such transmission.The JSTOR Archive is a trusted digital repository providing for long-term preservation and access to leading academic journals and scholarly literature from around the world.The Archive is supported by libraries,scholarly societies,publishers, and foundations.It is an initiative of JSTOR,a not-for-profit organization with a mission to help the scholarly community take advantage of advances in technology.For more information regarding JSTOR,please contact support@.Fri Nov213:31:382007You have printed the following article:High Resolution Schemes Using Flux Limiters for Hyperbolic Conservation LawsP.K.SwebySIAM Journal on Numerical Analysis ,Vol.21,No.5.(Oct.,1984),pp.995-1011.Stable URL:/sici?sici=0036-1429%28198410%2921%3A5%3C995%3AHRSUFL%3E2.0.CO%3B2-YThis article references the following linked citations.If you are trying to access articles from anoff-campus location,you may be required to first logon via your library web site to access JSTOR.Please visit your library's website or contact a librarian to learn about options for remote access to JSTOR.References3Stable and Entropy Satisfying Approximations for Transonic Flow CalculationsBjorn Engquist;Stanley OsherMathematics of Computation ,Vol.34,No.149.(Jan.,1980),pp.45-75.Stable URL:/sici?sici=0025-5718%28198001%2934%3A149%3C45%3ASAESAF%3E2.0.CO%3B2-L11Riemann Solvers,The Entropy Condition,and Difference ApproximationsStanley OsherSIAM Journal on Numerical Analysis ,Vol.21,No.2.(Apr.,1984),pp.217-235.Stable URL:/sici?sici=0036-1429%28198404%2921%3A2%3C217%3ARSTECA%3E2.0.CO%3B2-E18On Convergence of Monotone Finite Difference Schemes with Variable Spatial Differencing Richard SandersMathematics of Computation ,Vol.40,No.161.(Jan.,1983),pp.91-106.Stable URL:/sici?sici=0025-5718%28198301%2940%3A161%3C91%3AOCOMFD%3E2.0.CO%3B2-ALINKED CITATIONS -Page 1of 1-NOTE:The reference numbering from the original has been maintained in this citation list.。
半导体制冷风扇工作原理波尔兹曼效应是指当温度差异两端的物体接触时，热量将沿着温度梯度从高温区传输到低温区。
而Peltier效应是指当电流通过特殊的半导体材料时，会在不同温度的两个接触面上产生温差。
半导体制冷风扇的核心部件是一个片状的半导体材料，通常是由两种不同类型的半导体材料构成的。
这两种半导体材料分别被称为P型半导体和N型半导体。
而这两种半导体材料之间的接触面，就是实现Peltier效应的关键。
当电流通过半导体材料时，电子和正电荷载流子将被输入到这个片状半导体材料中，这会导致一个面积较大的半导体材料变为N型（负载流子多）而另一个较小的半导体材料变为P型（正电荷载流子多）。
这样一来，电子在N型半导体中在输运中会被输入更多的能量从而增加速度，而P型半导体中电子输运时会吸收更多的能量从而减少速度。
通过波尔兹曼效应，产生的高温区温度会引起Peltier效应，从而使得半导体材料的两端出现温差。
当N型半导体的一侧变得非常冷时，P型半导体的一侧就会变得非常热。
这样一来，冷面就可以吸收周围的热量，而热面则会排放出热量。
再加上风扇的帮助，将排出的热量通过风扇吹出，进而实现制冷效果。
当半导体制冷风扇工作时，根据需要，电流会被输入到半导体材料中，这会导致冷面变得非常冷，达到制冷的效果。
同时，风扇会吹动周围空气，进而吹走热面产生的热量，从而保持半导体材料的冷却状态。
半导体制冷风扇具有简单、高效、环保等特点。
由于其体积小、重量轻、无噪音、无震动的特点，因此在一些需要保持特定温度的场合得到了广泛应用。
例如计算机、电子设备、光纤通信设备等领域都可以看到半导体制冷风扇的存在。
总结来说，半导体制冷风扇的工作原理是通过利用片状半导体材料的Peltier效应和波尔兹曼效应，将热量从冷面传递到热面，同时结合风扇的帮助将热量排出，实现制冷效果。
它是一种高效、环保、无噪音的制冷方式，适用于多种场合。
4阶巴特沃斯滤波器系数
【原创实用版】
目录
1.巴特沃斯滤波器简介
2.4 阶巴特沃斯滤波器的特点
3.4 阶巴特沃斯滤波器的系数计算
4.4 阶巴特沃斯滤波器的应用
正文
一、巴特沃斯滤波器简介
巴特沃斯滤波器是一种通频带的频率响应曲线很平坦的信号处理滤
波器，也被称作最大平坦滤波器。
这种滤波器最先由英国工程师、物理学家斯替芬·巴特沃斯在 1930 年发表的论文《滤波器放大器理论研究》中提出。
巴特沃斯滤波器的主要特点是通带内频率响应平坦，阻带频率响应陡峭，因此被广泛应用于信号处理、通信系统等领域。
二、4 阶巴特沃斯滤波器的特点
4 阶巴特沃斯滤波器是巴特沃斯滤波器中的一种，其主要特点是滤波器的滚降特性较好，即在截止频率附近，信号衰减得比较快。
同时，4 阶巴特沃斯滤波器的通带内频率响应比较平坦，可以很好地保留信号的原始特性。
三、4 阶巴特沃斯滤波器的系数计算
4 阶巴特沃斯滤波器的系数计算比较复杂，需要通过一定的数学推导和计算过程来确定。
一般来说，4 阶巴特沃斯滤波器的系数包括两个部分，即滤波器的传递函数和阻抗函数。
这两个函数的确定需要根据滤波器的截止频率、通带频率、阻带频率等参数来确定。
具体的计算过程可以参考相关的信号处理教材或使用信号处理软件进行计算。
四、4 阶巴特沃斯滤波器的应用
4 阶巴特沃斯滤波器在信号处理、通信系统等领域有着广泛的应用。
例如，在音频处理中，4 阶巴特沃斯滤波器可以用来对音频信号进行降噪、滤波等处理，使音频信号更加清晰、自然。
SERIESThe power of spaceThe power of spacefor use with Class CF CUBEFuse TM requiresup to 51% less spaceThe revolutionary Bussmann TM series Compact CircuitProtector (CCP) for Class CF Low-Peak TM CUBEFuse TM delivers the smallest footprint compared to any Class J disconnect solution — requiring up to 51% less space .The CCP is a UL ® 98 Listed fused, branch-circuit disconnect that packs up to a 200 kA short-circuit current rating (SCCR) at 600 V to help increase equipment SCCR. These high ratings and compact design make the CCP ideal for industrial control panels, machinery and HVAC applications.Features• Footprint 1/2 the space required by traditional fusible switches saves valuable panel space• Rotary operated versions provide through-the-door and through-the-side operation flexibility for enhanced safety •Multi-wire lug kit with terminal shrouds reduces wireconnection and control panel components by allowing for power distribution to multiple loads• Optional selector and pistol handles available for use with rotary operated versions• Built-in switch interlock prohibits removing the fuse under load• Standard open fuse indication speeds troubleshooting • 1/4" lockout/tagout provision enhances safety •Straight voltage rated for application flexibilityThe Bussmann series Compact Circuit Protector now features through-the-door operation and a multi-wire lug kit for enhanced application versatility.Space savings of 51%Footprint of a CCP2R-3-100CF compared to the footprint of a traditional, 3-pole Class Jdisconnect solution.Switch only CCP2-(pole)-60CF 60CCP2-(pole)-100CF 100CCP2R-(pole)-30CF 30Right front rotary, clockwise operated switch CCP2R-(pole)-60CF 60CCP2R-(pole)-100CF 100CCP2RL -(pole)-30CF 30Left front rotary, clockwise operated switchCCP2RL -(pole)-60CF 60CCP2RL -(pole)-100CF 100CCP2S-(pole)-30CF 30Right side rotary, clockwise operated switchCCP2S-(pole)-60CF 60CCP2S-(pole)-100CF 100CCP2SL -(pole)-30CF 30Left side rotary,counterclockwise operated switchCCP2SL -(pole)-60CF 60CCP2SL -(pole)-100CF10051%smallerAgency information:•UL 98 Listed, Guide WHTY , File E302370•cULus to Canadian Standard 22.2 No. 4-04, Guide WHTY7, File E302370• RoHS compliant •CE Amp ratings:• 30 A • 60 A •100 AWire range:18-6 AWG single or dual rated (same size wire), solid or stranded 4 AWG single, 75ºC Cu Poles:Factory configured 1-, 2- and 3-pole Construction:Finger-safe (IP20compliant with 10 AWG or larger wire)Operating temperature: -20ºC to 75ºC*Padlockable:YesLocal indication:Yes Mounting:35 mm DIN-Rail Accessories:• Multi-wire lug kits •Selector and pistol handles • Handle shafts • Auxiliary contacts •PLC fuse monitor1-, 2-, and 3-pole CCP2-30CFSee CCP2-CF data sheet no. 10801 for complete technical information.* For fuse performance under or above 25ºC, consult fuse performance charts in Eaton'sBussmann series Selecting Protective Devices (SPD) handbook (Pub. no. 3002).3-pole CCP shown with left front through-the-door rotary operator (CCP2RL-3-60CF).3-pole CCP shown with right siderotary operator (CCP2S-3-60CF).Multi-wire lugs mount in switch box lug terminals to provide three additional wire ports per pole. Lugs can be mounted on the switch lineside or loadside. Each multi-wire lug kit comes with threelugs and three shrouds.Right front rotary operated CCP2 switch with PLC fuse monitor.For Eaton’s Bussmann series product information,call 1-855-287-7626 or visit: /bussmannseries。
达达里奥琴弦介绍(D'Addario)(2009-10-31 22:51:48)EXP系列琴弦是在低音弦的缠绕式金属丝的表面涂上了一层极其薄的EXP涂层。
由于有了该涂层，使得琴弦可以免受外界腐蚀性物质的侵蚀，例如手上的汗水，空气中的脏东西等，从而最大限度地保证了音色寿命。
EXP琴弦的声音清新亮丽，给人耳目一新的感觉，而寿命则可以达到普通琴弦的三到四倍。
EXP系列琴弦的高音弦与Pro Arte系列中对应的型号是相同的，只在低音弦上有所区别。
EXP44 - 超高张力(Extra Hard)，透明尼龙高音弦＋EXP系列镀银金属丝缠绕式低音弦EXP45 - 标准张力(Normal)，透明尼龙高音弦＋EXP系列镀银金属丝缠绕式低音弦EXP46 - 高张力(Hard)，透明尼龙高音弦＋EXP系列镀银金属丝缠绕式低音弦Pro Arte系列琴弦Pro Arte古典吉他琴弦的特点就是——经典。
其高音弦是使用尼龙为材料，并且在整条弦上利用激光对直径进行精确的测量，以保证用户手中的琴弦具有极其精确的张力。
尼龙是在熔化状态下被挤压出来的，这样得到的琴弦在不同部位其直径会有千分之几英寸的差别。
尽管这种差别只有头发丝直径的1/4，但是对于经受过专业训练的古典吉他演奏家来说还是能够感受到由此而导致的张力上的变化。
解决这一问题的方法就是通过使用激高速计算机等先进技术，建造出一个专用的工作站来进行筛选。
激光会在一根琴弦上进行将近200次的测量，然后对测量数据进行处理，将不同张力的琴弦进行分类放置。
最终的结果会怎样？每当你选则Pro Arte琴弦时，你所得到的琴弦直径误差都严格保证在万分之四英寸以内。
Pro Arte系列中的缠绕式低音琴弦采用镀银的铜丝或是比例为80/20的青铜丝，在D'Addario's公司专用的设备上进行缠绕。
以前Pro Arte有9根一套环保包装的套弦可供选择。
由于D'Addario 高音琴弦的寿命至少为低音琴弦寿命的两倍，因此在9装的套弦包装中，包括了一套标准的6根一套的琴弦，另外还有3根额外的低音琴弦。
运动控制器高功率密度驱动技术的相关参数主要涉及功率、电流、重量、效率等方面。
以Elmo运动控制公司研发的DoubleGoldTwitter为例，具体参数如下：
•输出功率：超过10000w，满足高功率应用需求。
•持续电流：可输出160A（80V）和140A（100V）的持续电流。
•重量：仅为33克，非常适合占地面积小且高功率的应用需求。
•效率：采用Elmo的创新专利型快速软开关技术（FASST），确保最佳的功率转换效率，实现99%以上的效率。
此外，对于电动车驱动系统，美国能源部（DOE）也设定了高功率密度驱动技术的目标。
到2025年，DOE希望达到100kW牵引驱动系统的33kW/L功率密度目标，与目前最先进的技术相比提升 5.5倍。
这需要电力电子控制器的功率密度从18kW/L提高到100kW/L，牵引电机的功率密度从9kW/L提高到50kW/L。
这些参数和目标都体现了运动控制器高功率密度驱动技术在追求更高功率、更小体积、更高效率方面的发展趋势。
然而，具体的参数可能因产品和应用场景的不同而有所差异，因此在实际应用中需根据具体需求进行选择和调整。
使用布莱克曼窗设计的FIR滤波器正文布莱克曼窗（Blackman window）是一种常用于信号处理中的窗函数。
在设计FIR滤波器时，窗函数用于减小信号在滤波器频率响应两侧的泄漏效应，并使滤波器的频率响应能够更好地接近于所需的频率响应。
FIR滤波器是一种数字滤波器，由有限个数量的线性时不变系统相连接而成，因此其频率响应是离散的。
FIR滤波器的设计中，通过选择合适的滤波器特性和频率响应来实现信号的滤波。
而窗函数则作为FIR滤波器设计的一部分，用于对滤波器的频率响应进行调整。
布莱克曼窗是一种常用的窗函数，具有良好的频谱特性。
它的形式为：w(n) = 0.42 - 0.5cos(2πn/(N-1)) + 0.08cos(4πn/(N-1))其中，n为窗函数中的采样点的索引，N为窗函数的长度。
在FIR滤波器的设计中，首先确定所需的频率响应，然后根据频率响应的形状选择一个合适的窗函数。
布莱克曼窗通常用于需要较小的波纹和较宽的主瓣宽度的滤波器设计中。
通过使用布莱克曼窗，可以减小滤波器的过渡带宽度，并且主瓣的振幅变化相对较小。
在具体应用中，FIR滤波器的设计通常是一个迭代的过程。
首先，根据所需的频率响应确定滤波器的理想幅度响应。
然后，使用窗函数对理想幅度响应进行加权，得到实际的频率响应。
最后，通过对频率响应进行快速傅里叶变换（FFT）等处理得到滤波器的系数。
而布莱克曼窗作为一种窗函数，可以通过计算窗函数的数学表达式并应用到滤波器设计的实际过程中。
总结起来，布莱克曼窗是一种常用的窗函数，广泛应用于FIR滤波器的设计中。
通过使用布莱克曼窗，可以调整滤波器的频率响应，减小滤波器频率响应两侧的泄漏效应，并使滤波器的频率响应能够更好地接近所需的频率响应。
在具体的应用中，布莱克曼窗可以通过计算其数学表达式并应用到滤波器设计的过程中来实现。
71MXL LARGE DIAPHRAGM CONDENSER STUDIO MICS Studio condenser microphones with both FET and tube circuitry available. FET models require 48V phantom power, while tube models include power supply.ITEM DESCRIPTIO N PRICE MXL-770...............Cardioid, 6-micron 20mm gold-sputtered diaphragm FET w/shockmount and case,30Hz-20kHz, -10dB pad and bass roll off .................................................................................................89.95 MXL-2003.............Cardioid transformerless condenser w/bass cut and -10dB pad switches, 20Hz-20kHz ........................169.95 PRO-PAC-PLUS+..MXL2003 & MXL603S (transformerless cardioid instrument mic),w/shockmounts, cables, windscreens in padded case ............................................................................279.95 MXL-2006.............Cardioid, true Class 'A' FET preamp w/balanced transformerlessoutput, high-isolation shockmount and case, 30Hz-20kHz .......................................................................99.95 MXL-2010.............3-pattern (cardioid/Figure-8/omni) capsule, FET preamp w/bassroll-off switch, shockmount & windscreen, 30Hz-20kHz .........................................................................169.95 MXL-CUBE............Drum condenser cardioid mic, FET balanced output w/mic clip, 20Hz-20khz ...........................................99.95 MXL-GOLD-35.......Gold-plated cardioid condenser w/shockmount, leather case, windscreen, 20Hz-20kHz ........................695.00 MXL-M3................Cardioid condenser, transformer balanced output, FET preamp, 20Hz-23kHz ........................................249.00 MXL-R77 ..............Classic body Figure-8-patterned ribbon condenser w/wood case,desktop stand, & 25ft XLR cable, 20Hz-18kHz .......................................................................................399.99 MXL-R77-L...........Same as above, but w/custom Swedish Lundahl transformer ................................................................549.95 MXL-R144 ............Figure-8 patterned ribbon condenser, purple & chrome finishw/shockmount, case, cleaning cloth, 20Hz-17kHz ....................................................................................99.99 MXL-TROPHY........Cardioid condenser w/side-tapped capsule & removable nameplate, 20Hz-20kHz ................................199.95 MXL-V6.................Cardioid mic w/balanced FET output stage, case, & clip, 20Hz-20kHz ...................................................299.00 MXL-V67G ............Transformer-balanced cardioid mic w/solid-state preamp & gold grill, 30Hz-20kHz .............................119.95 MXL-V67I .............Same as above but w/2 selectable 1" cardioid capsules (one bright, one warm) & -10dB pad switch ..169.95 MXL-V67Q ............X/Y stereo pattern condenser mic, w/gold-plated grill, 2 externally biased 22mm pressuregradient capsules, 10ft custom XLR cable, 20Hz-20kHz ........................................................................199.95 MXL-V69-MOGAMI-EDITNTransformerless tube cardioid condenser w/shockmount, power supply, 15ft 7-pin cable,15ft XLR cable, cleaning cloth, & case, 20Hz-18kHz ..............................................................................299.95 MXL-V69XM..........Same as above, but w/transformer balanced output, 20Hz-18kHz .........................................................399.00 MXL-V87...............Low-noise transformer-balanced cardioid condenser withFET preamp, w/pop filter & shockmount, 20Hz-20kHz ............................................................................299.95 MXL-V88...............Low-noise cardioid condenser w/balanced transformerless output, FET preamp,high-isolation shockmount & flight case, 20Hz-20kHz ...........................................................................199.00 MXL-V177.............Low noise classic body cardioid condenser w/6-micron thick gold-sputtered diaphragm, 20Hz-20kHz .299.95 REVELATION.........Variable pattern tube condenser mic w/EF86 pentode tube ..................................................................1295.00 GENESIS...............Tube condenser cardioid mic w/-10 dB pad, dedicated power supply ....................................................595.00R144V1772010GOLD-35GENESIS REVELATIONCUBEVIP50DC-196DC-96B72ID The RØDE NT5 is a true condenser microphone specifically two stand mounts and two windscreens. Requires 48V phantom power. Frequency dynamic range >128dB. Available in pairs, or as single RØDE NT2A MULTI-PATTERN LARGE DIAPHRAGM CO NDENSER MIC The successor to the very popular NT-2 studio condenser mic, the NT2A now has the internally shock mounted H F1 dual 1" capsule, the same as is used in the K2 microphone, and new electronics with extremely low 7dBA self-noise. It has a 3-position variable polar pattern for omni, cardioid, and figure-8 patterns, three positions of selectable attenuation (0dB, -5dB, or -10dB) and low freq. roll-off (flat, 80Hz or 40Hz). The NT-2A comes with a soft pouch and mounting clip.ITEM DESCRIPTI O N PRICE NT2A ...................Multi-pattern condenser ................399.00ID phone with an incredible 5dBA self noise figure. 48V phantom power, transformerless output, 137dB max. SPL, fixed cardioid pattern.SCHO EPS CO LETTE MODULAR MIC SETSMicrophones consist of a mic cap-sule and amplifier. The CMC 6 microphone amplifier converts extremely high-imped-ance signals from the attached capsule toa very low-impedance signal suitable for transmission via mic cable. It also featuresa symmetrical Class “A” output stage, free of coupling condensers or an output transformer. They are light-weight, have extremely low distortion, and their very low output impedance helps make them insensitive to electrical interference. The CMC 6 works with both 12V and 48V phantom powering. Matte gray options listed below but also available in nickel. All sets include SG20 stand clamps and B5 popscreens.ITEM DESCRIPTI O N PRICE CMC621G-SET ....Includes CMC 6 amplifier & MK21wide cardioid capsule ..................1632.00 CMC622G-SET ....Includes CMC 6 amplifier, & MK22 open cardioid capsule ........1632.00 CMC64G-SET ......Includes CMC 6 amplifier & MK4 cardioid capsule ..........................1542.00 CMC641G-SET ....Includes CMC 6 amplifier &MK41 supercardioid capsule ........1743.00CMC641CG-SET ..Includes CMC 6 amplifier & MK41 super-cardioid capsule, CUT 1 filter ......2320.00CMC65G-SET ......Includes CMC 6 amplifier &MK5 omni/cardioid capsule..........2059.00CMC68G-SET ......Includes CMC 6 amplifier &MK8 figure-8 capsule...................1938.00NEAR-FIELD-OMNI-STIncludes 2 CMC 6s, matched pairof MK2 omnis ...............................3150.00UNIVERSAL-OMNI-H-STIncludes 2 CMC 6s, matched pairof MK2 H omnis ............................3214.00UNIVERSAL-OMNI-S-ST ........................................................Includes 2 CMC 6s, matched pairof MK2 S omnis ............................3150.00WIDE-CARDIOID-STIncludes 2 CMC 6s, matched pairof MK21 wide cardioids ................3199.00OPEN-CARDIOID-STIncludes 2 CMC 6s, matched pairof MK22 open cardioids ...............3199.00CARDIOID-ST ......Includes 2 CMC 6s, matched pairof MK4 cardioids ..........................2999.00SUPERCARDIOID-STIncludes 2 CMC 6s, matched pairof MK41 supercardioids ...............3439.00SWITCHABLE-PATTRN-STIncludes 2 CMC 6s, matched pairof MK5 omni/cardioids ......................CALL MK21MK5MK41MK8MK22MK4NEUMANN KM180 SERIES The KM180series condensers offer the same trans-formerless circuitry as the KM100s without the 10dB pad. Frequency response is 20Hz-20kHz. The KM183, KM184 and KM185 have SPL han-dling of 140dB, 138dB and 142dB respec-tively. 48V phantom power is required.ITEM DESCRIPTI O N PRICE KM183 ................Omni condenser mic ......................899.95KM184 ................Cardioid condenser mic .................849.95KM185-SILVER ...Hypercardioid condenser mic .........899.95EA2124A .............Optional suspension mount ...........279.01WNS100 .............Replacement windscreen .................26.07WS100................Optional 90mm windscreen .............28.03SKM183-MT ........Stereo mic pair-omni,w/case, black ...............................1699.95SKM183-SILVER .Stereo mic pair-omni, w/case ......1699.95SKM184-MT ........Stereo mic pair-cardioid,w/case, black ...............................1599.95SKM184-NI .........Stereo mic pair-cardioid,w/case, nickel ..............................1599.95NEUMANN U87AI 3-PATTERNA legendary FET large diaphragmtransformer coupled studio mic withomni, cardioid and figure-8 patterns,N PRICEMXL SMALL DIAPHRAGM CONDENSER MICS These small diaphragmcondenser mics are quiet, sensitive, rugged enough for the road and inexpen-sive. They are an excellent choice for drum overheads and for close recordingof acoustic instruments. 48V phantom power required.ITEM DESCRIPTI O N PRICE MXL-603PAIR .....Stereo pair of transformerless cardioid instrument mics, 30Hz-20kHz,w/ MXL-41-603 shockmounts & case ................................................................................199.00MXL-604.............Small diaphragm cardioid condenser, 30Hz-20kHz, w/ wooden case,mounting clip and omnidirectional capsule.........................................................................83.93MXL-V67N ..........Small diaphragm instrument condenser, omni/cardioid capsules, 20Hz-20kHz ................119.95MXL-41-603 .......Replacement shockmount for MXL-603PAIR ........................................................................38.95603PAIR ID This mic sure level of 144dB, which is good forrecording amps, drums, and other loudinstruments. Acoustic instruments willbenefit from the TLM102’s fast transientresponse. The TLM102 also features a slight boostNEUMANN TLM103/TLM103D These are large diaphragm cardioid mics with a transformerless output stage. Designed primarily for vocals, the TLM03 also excels on piano, percussion, and stringed instru-ments. The TLM103D is a digital version of the mic, designed for home recording and project studios. Its A/D converter receives the output signal directly from the capsule, ensuring that the signal has no coloration and superb transparency. Both mics require 48V phantom power and come with We service many of the major brands that we carry.Call our Authorized Repair Department at ext. 1172Honesty and Valuesince 197173Thisrugged system has separate capsules and powering modulesthat can be combined to produce a wide variety of microphones.A single module and a few capsules can provide the user withflexibility that would otherwise require investing in a numberof individual microphones. It converts quickly from one type ofmicrophone to another by simply threading together varioussystem components. All capsules use back-electret technologyfor uncompromised quality. Output of all powering modules isbalanced, low impedance (200ohms) and terminates in a stan-“Universal” powering module for the sys-tem. Powered by a single 1.5V “AA” battery with a life of 150 hours, or phantom power SHURE KSM42 & KSM44A LARGE Premium side-address mics offering a dual-diaphragm design with an active front, ultra thin (2.5 micron) 24-karat gold, low mass, 1" Mylar® diaphragm. The KSM42 is ideal for vocal applications with a tailored frequency nal pop filtering. The single-pattern design exhibits smooth proximity control & ultra-wide dynamic range. An internal shock KSM42KSM44A SSED SINGLE-DIAPHRAGM For studio recording and live sound production. The KSM32 offers an extended frequency response of 20Hz-20kHz for an open, natural sound. The Class “A” transformerless preamp circuitry eliminates cross-over distortion for improved linearity across the full frequency range. mass diaphragm provides extended low frequency response and excellent transient microphones feature 20Hz-20kHz frequency response, a 3-position pad switch, a 3-position LF filter, and include a windscreen and carrying case. The KSM137 is a single pattern cardioid mic, while the KSM141 is a dual ...............................665.00 ...............................870.00 PRICE NDENSER The e614 has a super-cardioid pattern, with a neutral response and moderate sensitivity, which insures optimum isolation from other instruments on stage. Unobtrusive for precise place-ment and powered by external phantom power (P48), the e614 tolerates extremely high SPLs, precisely capturing cymbals and hi-hats better than other mics in its price range. 10-year warranty. Frequency response is 40Hz-20KHz.PRICE A large diaphragm side-address microphone with a car-dioid pickup pattern and a nickel colored finish. It has a large 1" diaphragm precisely sputtered with 24-carat gold. It has a sturdy metal housing and the elastically mounted capsule suppresses handling noise. It has a max SPL level of 140dB and a low self-noise level of 10dB(A). It has a frequency response of 20Hz-20kHz, a sensitivity rating of 25mV/Pa and a dynamic range ING SOON!99.9574at home in sound reinforcement systems or in sound studios and motion picture/ TV scoring stages. When used with the optional windscreen, the SM94 can be used by vocalists and speechmakers who desire a wide, flat z and a uniform SHURE PG27LC & PG42LC SIDE ADDRESSThese mics feature acardioid pickup pattern, large diaphragm capsules withswitchable attenuators. The PG27LC is designed for usewith instruments. It has a flat, neutral frequency responsefeatures a voice-tailored frequency response of 20Hz-20kHz as well as an SPL rating PG42LC PG27LC NDENSER ect choice for y demo tapes, les om pow-STC2OMEGA ORPHEUS STC1HELIOS STC10STC2X STC20SATURN studio environments. Features interchangeable capsules for superior versatility. The small diaphragm design provides superior audio with con-sistent, textbook polar responses and is small enough to use in the tightest conditions. The compact side-address design features an innovative lock-ing ring to provide secure connection between capsule and preamplifier. The 20Hz-20kHz frequency response is tailored for wide dynamic range applications for use in high SPL environments. Ships with stand adapter, LET DESIGN BLACK KNIGHT ID PRICE VISIT OR CALL 800-356-5844 FOR MORE INFO We have the largest selection of hard to find items. Call us!Honesty and Valuesince 197176VIOLET DESIGN PEARL SERIES CARDIOID CONDENSER These mics have a rear-ported spherical head and nar-row tapered form reflector to reduce internal resonances and optimize the cardioid polar pattern. The Pearl Standard uses a medium single-diaphragm to provide a modern,airy and detailed sound while the Grand Pearl uses a largedual-diaphragm, providing the warm, classic sound usuallyassociated with vintage studio microphones. Pearl Vocal is ahandheld stage vocal mic, and has special shockmounting forreduced handling noise, a special mid-sized capsule designedfor high gain before feedback with extended flat LF responseand outstanding dynamic range. All models include wood box and stand clip.NES These are side-addressed, cardioid, large dual diaphragm vacuum-tube studio microphones in 3 variations, with acous-tically-transparent head construction and internal shock-mounts. The 6267 vacuum tube preamplifier is a Class “A” fully-discrete circuit with massive heatsink, very high output, flat audio-response and ultra-low noise and distortion. The large custom-wound Permalloy humbucking audio trans-former adds even more “analog warmth” to the sound with wide frequency response and minimum saturation. ComesVIOLET DESIGN AMETHYST CONDENSER STUDIO MICSThe Amethyst cardioid studio microphones use fully-discrete,phantom-powered Class “A” transformerless amplifiers. TheAmethyst Standard uses a single diaphragm center-terminatedcapsule which provides modern, detailed sound with airy highs,medium vocal presence and accentuated low-end response.The Amethyst Vintage uses a dual-diaphragm, dual-backplatecapsule which provides a classic, wide-spectrum, vintage micro-phone sound. Both models have a uni-directional cardioid polarpattern with minimal proximity effect and are linear over the wide frontal incidence NDENSER MICS The Flamingo Junior series are side-addressed studio microphones that use a single-diaphragm, cardioid electrostatic transducer which provides vintage tone with transparent highs, optimized vocal presence and fundamental low-frequency register with minimal proximity effect. An integrated capsule shockmount within the head and an included external compact studio shock-mount reduce stand rumble and mechanical shocks. The custom-wound large humbucking audio transformer adds “analog warmth” to the sound. Comes - Globe features transformerless Class “A” discreet electronics, internal shockmounts for both electronics and capsule, and a spherical and acoustically transparent head design. The Globe Standard has a classic wide-spectrum sound ideal for orchestral applications. The Globe Vintage uses a different dual-diaphragm capsule providing a sweet and warm, vin-tage vocal microphone sound. Comes in a wooden box with shockmount.GLOBE-STANDARD An electrostatic multi-pattern studio mic with a vintage sound, warmed by vacuum tube circuitry and an output transformer. Features specially designed large dual-diaphragm transducer, and 9 different polar patterns. Its Class “A” fully-discrete internal vacuum tube preamp provides high output, low impedance and low distortion. A large humbucker, custom-wound audio transformer balances the microphone’s output, providing additional analog warmth to the sound. Soft starting, smart power supply and external elastic This large dual-diaphragm cardioid con-denser studio microphone has a warmer smooth tone with very high output and low noise. The fast transient response, crystal clear highs and loud SPL handling make it excellent for recording drums. The multi-layered wedge shaped brass mesh head design effectively reduces plosive sounds and breath, pop or wind noises. The internal solid state preamplifier is a Class“A” fully discrete transformerless circuit, and runs on 48V phantom power.PRICE 679.0099.00ID rating an integrated, tapered reflector which reduces resonances, removes reflections and tern. Integrated damping of the transducer reduces stand rumble, outside infrasonic FRR A compact electrostatic mic preamp body for use with vintage German-made M-series inter-changeable capsule heads, as well as B-series and VIN-seriesinterchangeable capsule heads made by JZ in Latvia. The elec-tronics are phantom powered, with a linear Class “A” discretesolid state transformerless design to provide extremely low self-noise and distortion. The Global Pre provides a low-impedance,balanced output on a gold-plated 3-pin XLR. It comes in a woodenVIN47GLOBAL-PREM COMPATIBLE。
fumefx各个参数介绍（入门）插件简介FUMEfx是SitniAati公司发布的一款流体插件，该公司发布的还有著名的Afterburn插件，FUMEfx是一款强大的流体动力学插件，其强大的流体动力学可以模拟出非常真实的烟火和爆炸效果。
参数讲解FX分为2个大的面板，1个是他的基本参数面板，一个是他的模拟面板我们先来看一下他的基本参数面板，选中模拟框，进入MAX的修改面板。
常规参数间距：控制模拟精度，网格越小，模拟越精细，但是计算速度会相应增加，点击自动，可以实时显示网格大小。
长宽高：控制模拟区域的大小灵敏度：控制火焰包裹物体的大小，值越大，火焰包裹物体越紧密。
视口当我们模拟完成以后，我们可以在视图中实时观看火焰和烟雾的范围，大小和速度等相关的信息。
减少细节：减少视图中粒子显示的数量，提高运算速度阀值缩放：可以调节视图中粒子显示的范围。
提高运算速度。
通道阀值：这里我们可以单独的勾选某一项在视图中显示。
后面的数值也可以单独的调节粒子的显示。
显示剖面可以根据X Y Z3个轴向来显示粒子的相关信息缩放倍增和显示剖面我们保持默认就可以。
点击我们可以进入到FX的模拟面板。
模拟面板是整个插件的核心所在，所有的效果都是在这个面板里面调节，直到完成最后的效果。
1：预览窗口2：锁定面板3：开始模拟4：暂停以后继续模拟常规面板常规参数里面的参数和基本参数面板里的参数是一样的。
输出里面可以设置开始和结束时间，以及存放模拟缓存的位置。
模拟面板模拟解算机：流体的一种计算模式质量：流体渲染的质量缩放：其他的默认就可以了。
系统重力：真实的重力计算，影响烟火上升的高度。
速度：影响根据温度上升的数量，影响烟火上升快慢。
燃料燃料浮力：根据温度影响燃料上升高度。
燃点：决定燃烧的快慢。
0为完全然后，100为根据温度慢慢燃烧。
燃点比率：控制火焰燃烧的大小和范围。
值越小，火焰燃烧的更旺盛。
烟烟的浮力：根据烟影响燃料上升高度消散最小密度：当烟的密度低于这个最小值的时候会消失。
