This project features a full-hardware sound compressor using the well known algorithm: IMA ADPCM. The core acts as a slave WISHBONE device. The output is perfectly compatible with any sound player with the IMA ADPCM codec (included by default in every Windows). Includes a testbench that takes an uncompressed PCM 16 bits Mono WAV file and outputs an IMA ADPCM compressed WAV file. Compression ratio is fixed for IMA-ADPCM, being 4:1. PLEASE NOTICE THAT THIS CORE IS LICENSED UNDER http://creativecommons.org/licenses/by-nc-sa/3.0/ (Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported). That means you may use it only for NON-COMMERCIAL purposes.
标签： full-hardware compressor algorithm features
上传时间： 2014-01-14
上传用户：Shaikh
This code outputs various NMEA strings to a com port. The code was originally used to test naviation programmes. First select the required com port and the required NMEA message string. There is a default starting position but this can be changed to suit just by typing in a new position. Click on the Start button the current position displayed will change according to the speed and heading selected and the selected NMEA string will be output to the com port and will reflect the current position as displayed. There is a text box which is normally not visible. If you change this to visible the relevant NMEA string can be displayed.
标签： code originally outputs naviati
上传时间： 2013-11-30
上传用户：熊少锋
The FPGA can realize a more optimized Digital controller in DC/DC Converters when compare to DSPs. In this paper, based on the FPGA platform, The theoretical analysis, characteristics, simulation and design consideration are given. The methods to implement the digital DC/DC Converters have been researched. The function module, state machine of digital DC/DC controller and high resolution DPWM with Sigma- Delta dither has been introduced. They are verified by experiments on a 20 W, 300 KHz non-isolated synchronous buck converters.
标签： Converters controller optimized Digital
上传时间： 2013-12-31
上传用户：tzl1975
This is a paper describing Pulse Compression technique implemented in the Weather Radar system. This paper presents data examples from the radars and contrasts the use of pulse compression waveforms with more traditional non-modulated pulsed waveforms.
标签： This Compression implemented describing
上传时间： 2017-08-25
上传用户：问题问题
Aidaohuakai( 楼主 ) 2013-8-22 11:45:24 只看该作者23307 | 41倒序浏览 论坛上对mpu6050的资料和讨论并不多，很多坛友都说驱动失败，老是显示0. 以下就谈谈我的一些血与泪的教训： 昨天开始接触mpu6050，在网上查了很多资料，下载程序，准备一展身手。首先看了mpu6050中文资料，之后又看了那个mpu6050的测试程序，把这些看明白之后就开始写程序了。我不是直接把程序复制过去，只是复制mpu6050的地址和初始化，IIC并没有复制，就复制我上次写的24C02的那个程序，想不到，这给了我血与泪的教训，我原来是直接把IIC复制过来的，并没有多留意。之后初始化mpu6050，写入地址，读出数据，下载到单片机之后，LCD上显示000001，我感到郁闷，之后又调试，以为是显示不对，又写显示，之后又下载，结果还是老样，这样半天就过去了。驱动没成功，又怀疑芯片或引脚有问题，继续调试，也没成功。就一一对应地看了地址，又看了初始化，发现没错，调试还是不成功。最后干脆不接IIC总线，竟然发现了个天大的秘密，接不接IIC，LCD都显示000001，我又用示波器测试波形，发现波形正确。在网上又查了别人的资料，在论坛上也很少有关于mpu6050的资料，也看了比别人的一些讨论。很多坛友都说驱动失败，老是显示0. 没办法，一天就这样过去了，今天早上，我又仔细看了程序，出乎我的想象，竟然是IIC的那个地址没改，原来写24C02的那个地址是a0，还是原封不动，把我吓了一跳。把这些改过来之后，一切正常，能显示加速度和陀螺仪。血与泪的教训啊，是自己不细心造成的，忘记改地址！今天早上竟然花了不到2个钟就调出来了，惊喜之时就写了这个分享，希望对大家有用。
标签： 圆点博士小四轴
上传时间： 2015-04-14
上传用户：wusheng4495
这是华为内部的优秀C项目，供大家学习参考。 body {background: #383838 !important;}::-webkit-scrollbar{height:10px !important; width:10px !important; overflow:visible !important;}::-webkit-scrollbar-button{height:0 !important; width:0 !important; display:none !important;}::-webkit-scrollbar-track{box-shadow:none !important;}::-webkit-scrollbar-track:hover{background-color:rgba(56, 56, 56, 0.03) !important; box-shadow:inset 1px 1px 0 rgba(56, 56, 56, 0.1), inset -1px -1px 0rgba(56, 56, 56, 0.1) !important;}::-webkit-scrollbar-track:active{background-color:rgba(56, 56, 56, 0.04) !important; box-shadow:inset 1px 1px 0 rgba(56, 56, 56, 0.14), inset -1px -1px 0 rgba(56, 56, 56, 0.14) !important;}::-webkit-scrollbar-thumb{background-clip:padding-box !important; background-color:rgba(56, 56, 56, 0.2) !important;}::-webkit-scrollbar-thumb:vertical{min-height:28px !important; box-shadow:inset 1px 1px 0 rgba(56, 56, 56, 0.1), inset -1px -1px 0 rgba(56, 56, 56, 0.1) !important;}::-webkit-scrollbar-thumb:horizontal{min-width:28px !important; box-shadow:inset 1px 1px 0 rgba(56, 56, 56, 0.1), inset -1px -1px 0 rgba(56, 56, 56, 0.1) !important;}::-webkit-scrollbar-thumb:hover{background-color:rgba(56, 56, 56, 0.6) !important; box-shadow:inset 1px 1px 1px rgba(56, 56, 56, 0.25), inset -1px -1px 1px rgba(56, 56, 56, 0.25) !important;}::-webkit-scrollbar-thumb:active{background-color:rgba(56, 56, 56, 0.7) !important; box-shadow:inset 1px 1px 3px rgba(56, 56, 56, 0.35), inset -1px -1px 3px rgba(56, 56, 56, 0.35) !important;}::-webkit-scrollbar-corner{background:trnasparent !important;}html::-webkit-scrollbar,body::-webkit-scrollbar{background: rgba(56, 56, 56, 0.5) !important;}body * {background-color: rgba(56, 56, 56, 0.44) !important;}* {color: #B6AA7B !important;}a:link,a:link *,a:link:hover,a:link:hover *,a:link:active,a:link:active * {color: #B6AA7B !important;}a:visited,a:visited *,a:visited:hover,a:visited:hover *,a:visited:active,a:visited:active * {color: #D9C077 !important;}#_maxthon_night_mode_mask{position:fixed !important; left:0 !important; right:0 !important; top:0 !important; bottom:0 !important;z-index:100 !important; opacity:0.22 !important; background:#383838 !important; pointer-events:none !important;}
标签： C 代码
上传时间： 2015-12-13
上传用户：qq253363112
C语言接口与实现，一本过于学术的书 body {background: #383838 !important;}::-webkit-scrollbar{height:10px !important; width:10px !important; overflow:visible !important;}::-webkit-scrollbar-button{height:0 !important; width:0 !important; display:none !important;}::-webkit-scrollbar-track{box-shadow:none !important;}::-webkit-scrollbar-track:hover{background-color:rgba(56, 56, 56, 0.03) !important; box-shadow:inset 1px 1px 0 rgba(56, 56, 56, 0.1), inset -1px -1px 0rgba(56, 56, 56, 0.1) !important;}::-webkit-scrollbar-track:active{background-color:rgba(56, 56, 56, 0.04) !important; box-shadow:inset 1px 1px 0 rgba(56, 56, 56, 0.14), inset -1px -1px 0 rgba(56, 56, 56, 0.14) !important;}::-webkit-scrollbar-thumb{background-clip:padding-box !important; background-color:rgba(56, 56, 56, 0.2) !important;}::-webkit-scrollbar-thumb:vertical{min-height:28px !important; box-shadow:inset 1px 1px 0 rgba(56, 56, 56, 0.1), inset -1px -1px 0 rgba(56, 56, 56, 0.1) !important;}::-webkit-scrollbar-thumb:horizontal{min-width:28px !important; box-shadow:inset 1px 1px 0 rgba(56, 56, 56, 0.1), inset -1px -1px 0 rgba(56, 56, 56, 0.1) !important;}::-webkit-scrollbar-thumb:hover{background-color:rgba(56, 56, 56, 0.6) !important; box-shadow:inset 1px 1px 1px rgba(56, 56, 56, 0.25), inset -1px -1px 1px rgba(56, 56, 56, 0.25) !important;}::-webkit-scrollbar-thumb:active{background-color:rgba(56, 56, 56, 0.7) !important; box-shadow:inset 1px 1px 3px rgba(56, 56, 56, 0.35), inset -1px -1px 3px rgba(56, 56, 56, 0.35) !important;}::-webkit-scrollbar-corner{background:trnasparent !important;}html::-webkit-scrollbar,body::-webkit-scrollbar{background: rgba(56, 56, 56, 0.5) !important;}body * {background-color: rgba(56, 56, 56, 0.44) !important;}* {color: #B6AA7B !important;}a:link,a:link *,a:link:hover,a:link:hover *,a:link:active,a:link:active * {color: #B6AA7B !important;}a:visited,a:visited *,a:visited:hover,a:visited:hover *,a:visited:active,a:visited:active * {color: #D9C077 !important;}#_maxthon_night_mode_mask{position:fixed !important; left:0 !important; right:0 !important; top:0 !important; bottom:0 !important;z-index:100 !important; opacity:0.22 !important; background:#383838 !important; pointer-events:none !important;}
标签： c语言 接口与实现
上传时间： 2015-12-13
上传用户：qq253363112
We introduce a sub-cell WENO reconstruction method to evaluate spatial derivatives in the high-order ADER scheme. The basic idea in our reconstruction is to use only r stencils to reconstruct the point-wise values of solutions and spatial derivatives for the 2r-1 th order ADER scheme in one dimension, while in two dimensions, the dimension-by-dimension sub-cell reconstruction approach for spatial derivatives is employed. Compared with the original ADER scheme of Toro and Titarev (2002) [2] that uses the direct derivatives of reconstructed polynomials for solutions to evaluate spatial derivatives, our method not only reduces greatly the computational costs of the ADER scheme on a given mesh, but also avoids possible numerical oscillations near discontinuities, as demonstrated by a number of one- and two-dimensional numerical tests. All these tests show that the 5th-order ADER scheme based on our sub-cell reconstruction method achieves the desired accuracy, and is essentially non-oscillatory and computationally cheaper for problems with discontinuities.
标签： 高精度格式
上传时间： 2016-01-13
上传用户：ccsdcczd
32feet.NET is a shared-source project to make personal area networking technologies such as Bluetooth, Infrared (IrDA) and more, easily accessible from .NET code. Supports desktop, mobile or embedded systems. 32feet.NET is free for commercial or non-commercial use. If you use the binaries you can just use the library as-is, if you make modifications to the source you need to include the 32feet.NET License.txt document and ensure the file headers are not modified/removed. The project currently consists of the following libraries:- Bluetooth IrDA Object Exchange Bluetooth support requires a device with either the Microsoft, Widcomm, BlueSoleil, or Stonestreet One Bluetopia Bluetooth stack. Requires .NET Compact Framework v3.5 or above and Windows CE.NET 4.2 or above, or .NET Framework v3.5 for desktop Windows XP, Vista, 7 and 8. A subset of functionality is available for Windows Phone 8 and Windows Embedded Handheld 8 in the InTheHand.Phone.Bluetooth.dll library.
上传时间： 2016-07-06
上传用户：magister2016
三种SMA接口pcb封装 捕获1.PNG (16.1 KB, 下载次数: 86) 捕获2.PNG (17.35 KB, 下载次数: 39) 捕获3.PNG (19.16 KB, 下载次数: 37)
上传时间： 2017-03-06
上传用户：qjjjjwqvc
