无线专业内部培训 Wireless professional in-house training
标签： professional Wireless in-house training
上传时间： 2017-06-19
上传用户：familiarsmile
Occasionally, we are tasked with designing circuitry for aspecific purpose. The request may have customer originsor it may be an in-house requirement. Alternately, a circuitmay be developed because its possibility is simply tooattractive to ignore1. Over time, these circuits accumulate,encompassing a wide and useful body of proven capabilities.They also represent substantial effort. These considerationsmake publication an almost obligatory propositionand, as such, a group of circuits is presented here. This isnot the first time we have displayed such wares and, giventhe encouraging reader response, it will not be the last2.Eighteen circuits are included in this latest effort, roughlyarranged in the categories given in this publication’s title.They appear at the next paragraph.
上传时间： 2013-11-12
上传用户：012345
The 4.0 kbit/s speech codec described in this paper is based on a Frequency Domain Interpolative (FDI) coding technique, which belongs to the class of prototype waveform Interpolation (PWI) coding techniques. The codec also has an integrated voice activity detector (VAD) and a noise reduction capability. The input signal is subjected to LPC analysis and the prediction residual is separated into a slowly evolving waveform (SEW) and a rapidly evolving waveform (REW) components. The SEW magnitude component is quantized using a hierarchical predictive vector quantization approach. The REW magnitude is quantized using a gain and a sub-band based shape. SEW and REW phases are derived at the decoder using a phase model, based on a transmitted measure of voice periodicity. The spectral (LSP) parameters are quantized using a combination of scalar and vector quantizers. The 4.0 kbits/s coder has an algorithmic delay of 60 ms and an estimated floating point complexity of 21.5 MIPS. The performance of this coder has been evaluated using in-house MOS tests under various conditions such as background noise. channel errors, self-tandem. and DTX mode of operation, and has been shown to be statistically equivalent to ITU-T (3.729 8 kbps codec across all conditions tested.
标签： frequency-domain interpolation performance Design kbit_s speech coder based and of
上传时间： 2018-04-08
上传用户：kilohorse
Artech house QoS in 3G networks pdf
上传时间： 2014-12-06
上传用户：helmos
两种解决方案 Richard just finished building his new house. Now the only thing the house misses is a cute little wooden fence. He had no idea how to make a wooden fence, so he decided to order one. Somehow he got his hands on the ACME Fence Catalogue 2002, the ultimate resource on cute little wooden fences. After reading its preface he already knew, what makes a little wooden fence cute. A wooden fence consists of N wooden planks, placed vertically in a row next to each other. A fence looks cute if and only if the following conditions are met: ?The planks have different lengths, namely 1, 2, . . . , N plank length units. ?Each plank with two neighbors is either larger than each of its neighbors or smaller than each of them. (Note that this makes the top of the fence alternately rise and fall.)
标签： house the finished building
上传时间： 2014-01-26
上传用户：541657925
学习Direct3D中的2D-Focus.On.2D.in.Direct3D.-.fly
标签： Direct3D D-Focus Direct fly
上传时间： 2013-08-04
上传用户：eeworm
游戏开发大全-game.programming.all.in.one
标签： programming game all one
上传时间： 2013-06-30
上传用户：eeworm
EDA Tools in FPGA用于开发FPGA的EDA工具:随着集成电路和计算机技术的发展，越来越多的公司不断的开发出更加好用的EDA工具给广大的
上传时间： 2013-04-24
上传用户：ywqaxiwang
·Applied Mathematics in Integrated Navigation Systems
标签： nbsp Mathematics Integrated Navigation
上传时间： 2013-07-17
上传用户：liu_yuankang
ink in c++.chm C++编程思想 经典书籍 非常方便，需要的请下载吧。
上传时间： 2013-06-12
上传用户：yanming8525826
