基于SDF结构的FFT的设计，通过对SDF的合理用用，提高运行的速度，更适合实际的使用。
标签： Design Radix Architecture Approaches Hardware gurable Recon Using Mode FFT
上传时间： 2018-03-29
上传用户：lpyaking
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
Rtlinux3.2内核，对于做嵌入式实时linux开发的同学们可能有用。由于fsmlabs将rtlinux的版权卖给了windriver，不再提供对rtlinux社区版本的维护。他的官网不再提供rtlinux内核源代码。在网上也不是太好找。rtlinux3.2仅支持2.4.x的kernel.
上传时间： 2018-04-09
上传用户：wangpu
Digital Control of High-Frequency Switched-Mode Power Converters-Wiley-IEEE Press (2015)
上传时间： 2018-09-15
上传用户：赛德克巴莱
DESCRIPTION The Texas Instruments MSP430 family of ultra-low-power microcontrollers consists of several devices featuring different sets of peripherals targeted for various applications. The architecture, combined with five low-power modes, is optimized to achieve extended battery life in portable measurement applications. The device features a powerful 16-bit RISC CPU, 16-bit registers, and constant generators that contribute to maximum code efficiency. The digitally controlled oscillator (DCO) allows wake-up from low-power modes to active mode in less than 1 μs. The MSP430G2x13 and MSP430G2x53 series are ultra-low-power mixed signal microcontrollers with built-in 16- bit timers, up to 24 I/O capacitive-touch enabled pins, a versatile analog comparator, and built-in communication capability using the universal serial communication interface. In addition the MSP430G2x53 family members have a 10-bit analog-to-digital (A/D) converter. For configuration details see Table 1. Typical applications include low-cost sensor systems that capture analog signals, convert them to digital values, and then process the data for display or for transmission to a host system.
上传时间： 2018-12-25
上传用户：ygyh
实验项目一、单任务实验 让LED以1Hz频率进行闪烁。 实验项目二、定时查询实验 按下按键后点亮LED0、松开按键后熄灭LED0。 实验项目三、多任务实验 让LED0、LED1和LED3分别以1Hz、2Hz和3Hz的频率进行闪烁 实验项目四、临界区实验 按一次按键点亮LED0、再按一次按键熄灭LED0
标签： UCosIII
上传时间： 2019-05-02
上传用户：Shawn11
895nm Single-Mode VCSEL
上传时间： 2019-05-26
上传用户：jilei
In this paper we present a classifier called bi-density twin support vector machines (BDTWSVMs) for data classification. In the training stage, BDTWSVMs first compute the relative density degrees for all training points using the intra-class graph whose weights are determined by a local scaling heuristic strategy, then optimize a pair of nonparallel hyperplanes through two smaller sized support vector machine (SVM)-typed problems. In the prediction stage, BDTWSVMs assign to the class label depending on the kernel density degree-based distances from each test point to the two hyperplanes. BDTWSVMs not only inherit good properties from twin support vector machines (TWSVMs) but also give good description for data points. The experimental results on toy as well as publicly available datasets indicate that BDTWSVMs compare favorably with classical SVMs and TWSVMs in terms of generalization
标签： recognition Bi-density machines support pattern vector twin for
上传时间： 2019-06-09
上传用户：lyaiqing
Output Feedback Active Suspension Control With Higher Order Terminal Sliding Mode
标签： 滑模
上传时间： 2019-07-24
上传用户：sjjy0220
Second-Order Consensus in Multiagent Systems via Distributed Sliding Mode Control
上传时间： 2019-07-24
上传用户：sjjy0220
