优美的“列斯丽”音响装置及其电路

在现代音乐的舞台上,电子音响占据着重要的位置,经常使用电子乐器进行独奏、伴唱、伴舞或参加乐队演奏,在局部乐句中突出电子音响。然而,普通的电子风琴缺乏必要的电子润色手段。本文介绍的“列斯丽”音响装置,是国外电子乐器中新颖的加工润色手段,能产生电子乐曲中很流行的音色。这种音响效果不但可以方便地加到电子风琴中,也可以加到电吉他、弦控电子琴及其他任何电子乐器中。     

胆色迷人，石破天惊——前胆后石Hi—Fi功放DIY

自从开始玩电子管音响,真的很难不被它的声音迷住,它带来的多样风貌,晶体管机无法与之相比,晶体管机要搞出音色圆润的胆味就没这么容易。用电子管制作的音响其音色圆润、人声甜美、音乐味浓,相信广大的音乐发烧友都知道。不少家庭使用的中、低档音响,长时间聆听会觉得音质乏味,甚至会觉得令人烦躁,其实这都是数码声及晶体管功放的金属声在作怪。针对这一缺点,有一定音响理论和动手能力的发烧友都会动手制作电子管前级去推动后级晶体管功放,以求得圆润优美的音色。胆柔石刚是不争的事实,因此笔者设计了这款取胆石两者之长,胆石联姻,取长补短,其音色极为纯净,圆润优美。电子管长于电压放大,而晶体管适合于电流放大,因此     

华丽的音乐革命 红音堂唱片《极·现代》

17世纪的巴洛克音乐,18世纪的古典派音乐,19世纪的浪漫派音乐,20世纪的现代音乐,几乎每个世纪都会诞生一种新的音乐类型。它们由于时代特征的不同而悄然变化着。20世纪50年代电子音乐兴起,这一音乐类型的产生仰赖于电子合成器的出现和发展,电子合成器存储了制作好的不同音色,演奏者在演奏时可以调节速度、音调、音色。     

音响精品橱窗

LUXMAN A-383合并式放大器 一款以音乐为本的扩音机,表达音响重播的神髓,正好是音响设计一代的晨钟暮鼓！ 这就是音响界对LUXMAN A-383的评价。这并非偶然,LUX 60多年来的优良传统,对音乐的全情投入与一丝不苟的制作态度,使它从不轻率推出设备花巧而不切实际的商品;而以音色传神之匠心独运,创造出无数的音响精品,成为日本高级音响的中流砥柱。     

FU-50超线性放大器制作

最近从元件柜中寻出几对在当前都很廉价的电子管。制作了一台电子管单端甲类超线性功率放大器。经过精心焊制、认真调校，该放大器放音清纯透明、谐音丰富、音色温和甜美．且输出功率比三极管接法增大近一倍．现将制作过程中的心得与体会在此谈谈．希望与音响爱好者交流。     

浅谈广播节目中录音合成技术的运用

广播节目制作中运用录音合成技术已有几十年的历史。录音合成就是将各种声音、音响 ,包括有声语言、音乐、各种音响 ,按照内容与形式统一的原则 ,通过调音台有机地融合在一起 ,组成一个悦耳动听的完整节目。录音合成是录音师根据编辑的意图 ,对经过选择、剪辑的各种声音素材的再度创作 ,是广播节目制作过程的最后一道工序。在实际工作中 ,广播节目录音合成主要是针对三种因素 :语言、音乐、音响。这三种因素具有不同的功能和特点 ,通过对它们进行巧妙的组合 ,融语言、音乐、音响于一体所产生的声音综合效能来传情达意 ,可更好地发挥声音诸要…     

钟神CD-VS5电子管播放机

钟神高级音源的最新力作CD-S5唱机承袭一贯的严谨制作风格与完美的音乐诠释,外观设计时尚、新颖。而CD-VS5唱机在CD-S5唱机的基础上加入电子管元素,令音色有温暖而饱满的特质,是喜欢“胆味”的音响爱好者与音乐爱好者生命中最好的音乐盛会之一。     

《鼓怪》《秋思》《田园牧歌》--一套民乐佳品

如果听过了很多新世纪(New Age)或是世界音乐(World Music)这种类型的音乐的话,相信很多人都会对音乐的世界性和民族性这个话题产生浓厚的兴趣,当然笔者也不例外。就拿“New Age”来说吧,自上个世纪60年代电子合成器问世以来,在世界范围内有不少音乐家都以它为工具,从民间采取原始的音乐素材,再使用电子拼贴、剪辑、合成等手段,作出了不少脍炙人口的新世纪音乐作品。听这一类型的音乐,一方面听者往往会惊叹于电子合成器在音色创造及节奏变化上的超强能力,另一方面,又往往会对作品中显露出来的那些带有浓烈原始、民间气息的音乐元素而着迷不已。就以当代的几位擅长电子的音乐家     

精致靓丽的天逸AD-68 Hi-Fi合并式功率放大器

AD-68是广州天逸电子有限公司全新推出的超薄型、高档次Hi-Fi合并式功率放大器，旨在为讲求品位的音乐爱好者营造一种音质、音色及外观视觉效果都精致、精彩、时尚的高保真音乐控制中心。为适应现代家居对音响类产品精品化、时尚化的要求，AD68采用了超薄的2U（88mm）高度。     

μPD35502：车载音响用系统芯片

NEC电子完成了新款车载音响用系统芯片IJPD35502的开发,并将于即日起开始发售样片。新产品的主要特征包括：可以轻松搭建在汽车的前排座位与后排座位,同时播放多种不同音乐的系统;除了便携式音乐播放器、USB存储器中的音乐数据之外,还可以播放保存在SD卡中的MP3,WMA／AAC等多种压缩音乐数据;     

Resolution Enhancement Technology:Integrated Process Solutions using OPC

DUV lithography, using the 248 nm wavelength, is a viable manufacturing option for devices with features at 130 nm and less. Given the low kl value of the lithography, integrated process development is a necessary method for achieving acceptable process latitude. The application of assist features for rule based OPC requires the simultaneous optimization of the mask, illumination optics and the resist.Described in this paper are the details involved in optimizing each of these aspects for line and space imaging.A reference pitch is first chosen to determine how the optics will be set. The ideal sigma setting is determined by a simple geometrically derived expression. The inner and outer machine settings are determined, in turn,with the simulation of a figure of merit. The maximum value of the response surface of this FOM occurs at the optimal sigma settings. Experimental confirmation of this is shown in the paper.Assist features are used to modify the aerial image of the more isolated images on the mask. The effect that the diffraction of the scattering bars (SBs) has on the image intensity distribution is explained. Rules for determining the size and placement of SBs are also given.Resist is optimized for use with off-axis illumination and assist features. A general explanation of the material' s effect is discussed along with the affect on the through-pitch bias. The paper culminates with the showing of the lithographic results from the fully optimized system.     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Development of the readout system for waveguide multilayer optical card

Waveguide multilayer optical card （WMOC） is a novel storage device of three-dimensional optical information. An advanced readout system fitting for the WMOC is introduced in this paper. The hardware mainly consists of the light source for reading, WMOC, motorized stages addressing unit, microscope imaging unit, CCD detecting unit and PC controlling ＆ processing unit. The movement of the precision motorized stage is controlled by the computer through Visual Basic （VB） language in software. A control panel is also designed to get the layer address and the page address through which the position of the motorized stages can be changed. The WMOC readout system is easy to manage and the readout result is directly displayed on computer monitor.     

Study of waveguide coupling efficiency in hybrid silicon lasers

This paper presents a new method to increase the waveguide coupling efficiency in hybrid silicon lasers. We find that the propagation constant of the InGaAsP emitting layer can be equal to that of the Si resonant layer through improving the design size of the InP waveguide. The coupling power achieves 42% of the total power in the hybrid lasers when the thickness of the bonding layer is 100 nm. Our result is very close to 50% of the total power reported by Intel when the thickness of the thin bonding layer is less than 5 nm. Therefore, our invariable coupling power technique is simpler than Intel＇s.     

Collinear phase-matching study of terahertz-wave generation via difference frequency mixed in GaAs and Inp

The collinearly phase-matching condition of terahertz-wave generation via difference frequency mixed in GaAs and InP is theoretically studied. In collinear phase-matching, the optimum phase-matching wave hands of these two crystals are calculated. The optimum phase-matching wave bands in GaAs and lnP are 0.95-1.38μm and 0.7-0.96μm respectively. The influence of the wavelength choice of the pump wave on the coherent length in THz-wave tuning is also discussed. The influence of the temperature alteration on the phase-matching and the temperature tuning properties in GaAs crystal are calculated and analyzed. It can serve for the following experiments as a theoretical evidence and a reference as well.     

Effects of the alloy compositions on the phonon-polaritons in ternary mixed crystals

Composition dependence of bulk and surface phonon-polaritons in ternary mixed crystals are studied in the framework of the modified random-element-isodisplacement model and the Bom-Huang approximation. The numerical results for Several Ⅱ - Ⅵ and Ⅲ- Ⅴ compound systems are performed, and the polariton frequencies as functions of the compositions for ternary mixed crystals AlxGa1-xAs, GaPxAS1-x, ZnSxSe1-x, GaAsxSb1-x, GaxIn1-xP, and ZnxCd1-xS as examples are given and discussed. The results show that the dependence of the energies of two branches of bulk phonon-polaritons which have phonon-like characteristics, and surface phonon-polaritons on the compositions of ternary mixed crystals are nonlinear and different from those of the corresponding binary systems.     

New insert layer structure OLEDs

An insert layer structure organic electroluminescent device（OLED） based on a new luminescent material （Zn（salen）） is fabricated. The configuration of the device is ITO/CuPc/NPD/Zn（salen）/Liq/LiF/A1/CuPc/NPD/Zn（salen）/Liq/LiF/A1. Effective insert electrode layers comprising LiF（1nm）/Al（5 nm） are used as a single semitransparent mirror, and bilayer cathode LiF（1 nm）/A1（100 nm） is used as a reflecting mirror. The two mirrors form a Fabry-Perot microcavity and two emissive units. The maximum brightness and luminous efficiency reach 674 cd/m^2 and 2.652 cd/A, respectively, which are 2.1 and 3.7 times higher than the conventional device, respectively. The superior brightness and luminous efficiency over conventional single-unit devices are attributed to microcavity effect.