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数值算法/人工智能 The Window Design Method The basic idea behind the design of linear-phase FIR filters using the win
The Window Design Method
The basic idea behind the design of linear-phase FIR filters using the window
method is to choose a proper ideal frequency-selective filter [which always has
a noncausal, infinite duration impulse response] and then truncate its impulse
response hd[n] to obtain a linear-phas ...
Delphi控件源码 法国cromda编写的新版本MATRICE 2（矩阵和矢量运算单元）。 // ----------------------------------------------------------
法国cromda编写的新版本MATRICE 2（矩阵和矢量运算单元）。
// ----------------------------------------------------------
// 12-01-02 : MODIFIED Matrice to Matrice2 (Delphi 6)
// All routines now operate on rectangular matrix, except (InvMat and SysLin)
// No more need to use the InitMat procedure (su ...
数值算法/人工智能 北京大学ACM题 Here is a geometric problem. You have an angle and some squares in the first quadrant of
北京大学ACM题
Here is a geometric problem. You have an angle and some squares in the first quadrant of the plane rectangular coordinates. The vertex of the angle is fixed on the origin O of the coordinates, and both of its radial lines are specified by the input. The sizes of the squares are also s ...
matlab例程 Frequency Scale Conversion From f To f Scale frq2mel mel2frq mel The mel scale is based on the hu
Frequency Scale Conversion
From f To f Scale
frq2mel mel2frq mel The mel scale is based on the human perception of sinewave pitch.
frq2erb erb2frq erb The erb scale is based on the equivalent rectangular bandwidths of the human ear.
frq2midi midi2frq midi The midi standard specifies a numbering o ...
通讯编程文档 Abstract-The effect of the companding process on QAM signals has been under investigation for the p
Abstract-The effect of the companding process on QAM signals
has been under investigation for the past several years. The
compander, included in the PCM telephone network to improve
voice performance, has an unusual affect on digital QAM data
signals which are transmitted over the same channel. The ...
测试测量 基于Multisim 10的矩形波信号发生器仿真与实现
在Multisim 10软件环境下，设计一种由运算放大器构成的精确可控矩形波信号发生器，结合系统电路原理图重点阐述了各参数指标的实现与测试方法。通过改变RC电路的电容充、放电路径和时间常数实现了占空比和频率的调节，通过多路开关投入不同数值的电容实现了频段的调节，通过电压取样和同相放大电路实现了输出电压幅值的调节 ...
技术资料 基于MSP430单片机及FPGA的简易数字示波器
数字示波器功能强大,使用方便,但是价格相对昂贵。本文以Ti的MSP430F5529为主控器,以Altera公司的EP2C5T144C8 FPGA器件为逻辑控制部件设计数字示波器。模拟信号经程控放大、整形电路后形成方波信号送至FPGA测频,根据频率值选择采用片上及片外高速AD分段采样。FPGA控制片外AD采样并将数据输入到FIFO模块中缓存,由单片机进行频 ...
技术资料 基于单片机的运动功能康复治疗信号发生器的设计
目的:设计一种功能性电激励(FES)信号发生器,主要用于刺激患者截瘫部位以促进自身部分运动功能的恢复。方法:硬件系统基于AT89C52MCU和DAC0832数模转换芯片。通过分析常见波形和动物实验中提取出的控制运动的神经信号波形的时域特征来设计单片机程序,实现软硬件协同之后,可产生预期波形作为治疗仪的信号源。结果:经过测试,该 ...