無線專業內部培訓 Wireless professional in-house training
標簽： professional Wireless in-house training
上傳時間： 2017-06-19
上傳用戶：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.
上傳時間： 2013-11-12
上傳用戶：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.
標簽： frequency-domain interpolation performance Design kbit_s speech coder based and of
上傳時間： 2018-04-08
上傳用戶：kilohorse
Artech house QoS in 3G networks pdf
上傳時間： 2014-12-06
上傳用戶：helmos
兩種解決方案 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.)
標簽： house the finished building
上傳時間： 2014-01-26
上傳用戶：541657925
學習Direct3D中的2D-Focus.On.2D.in.Direct3D.-.fly
標簽： Direct3D D-Focus Direct fly
上傳時間： 2013-08-04
上傳用戶：eeworm
游戲開發大全-game.programming.all.in.one
標簽： programming game all one
上傳時間： 2013-06-30
上傳用戶：eeworm
EDA Tools in FPGA用于開發FPGA的EDA工具:隨著集成電路和計算機技術的發展，越來越多的公司不斷的開發出更加好用的EDA工具給廣大的
上傳時間： 2013-04-24
上傳用戶：ywqaxiwang
·Applied Mathematics in Integrated Navigation Systems
標簽： nbsp Mathematics Integrated Navigation
上傳時間： 2013-07-17
上傳用戶：liu_yuankang
ink in c++.chm C++編程思想 經典書籍 非常方便，需要的請下載吧。
上傳時間： 2013-06-12
上傳用戶：yanming8525826
