-
awgn
DTMF(双音多频)是用两个特定的单音频组合信号来代表数字信号的一种编码技术。两个单音的频率不同，代表的数字或实现的功能也不同。可采用8种频率代表电话机上的16个按键，10个数字键0~9和6个功能键*、#、A、B、C、D。具体的频率组合见参考书。要求：
(1) 根据键盘输入的符号，利用MATLAB产生对应的DTMF信号；(2) 分别利用FFT算法和Goertzel算法计算该DTMF信号的频谱并画出频谱图；(3) 根据频谱图确定DTMF信号所代表的符号是否和输入的符号一致。
(DTMF (Dual Tone Multi-Frequency) is a single with two specific combination of audio signals to represent a kind of digital signal coding techniques. Two monosyllabic different frequency, on behalf of the numbers, or the realization of the functions are also different. Eight kinds of frequency of use on behalf of telephone on the 16 keys, 10 numeric keys 0 ~ 9 and 6 function keys*,#, A, B, C, D. The frequency of specific composition of reference books. Requirements: (1) According to the keyboard input of symbols, the use of MATLAB have a corresponding DTMF signal (2), respectively, using FFT algorithm and the Goertzel algorithm DTMF signal spectrum and frequency spectrum draw (3) According to DTMF signal frequency spectrum to determine represented by symbols and input symbols unanimously.)
- 2008-12-24 20:12:16下载
- 积分：1
-
process-control
过程控制的matlab 模块定义和实现，并且里面scope可以生成曲线图(process control matlab module and application and curve)
- 2011-01-18 11:03:08下载
- 积分：1
-
rrcmodulber
this program do qam modulation and upsampling and downsampling and use raised cosine filteroj
- 2013-12-26 21:32:15下载
- 积分：1
-
merwe01a
An Introduction to the Kalman Filter (sigma)
- 2010-07-20 16:51:33下载
- 积分：1
-
krig2d
二维的克吕金插值，适用于地学类等领域，使用方便(Two-dimensional krig interpolation, applied geosciences)
- 2010-08-19 17:21:04下载
- 积分：1
-
29782193ofdm_trans
说明： 有关 信道编译码的源代码等等等 (The relevant channel codec, such as source code, etc.)
- 2008-11-29 18:42:54下载
- 积分：1
-
r_sn
R/S分析法中如何求解重标极差，得到后使用最小二乘估计就可以得到，Hurst指数(R/S analysis method on how to solve the rescaled range, obtained after the least-squares estimation can be used, Hurst index)
- 2011-11-15 21:20:49下载
- 积分：1
-
DualContouring
We present a robust approach to creating 2.5D building models aerial LiDAR point clouds. The method is guaranteed to produce crack-free models composed of complex roofs and vertical walls connecting them
- 2015-02-26 12:33:09下载
- 积分：1
-
kuozhan-complete-finished
MATLAB对LED光源扩展,改变原来的光源发光强度分布(Extension of LED light source by matlab,Change the light intensity distribution of the original light source)
- 2020-11-30 20:39:27下载
- 积分：1
-
Kalman
matlab的卡尔曼滤波预测算法例子，希望对大家有帮助(matlab prediction algorithm of the Kalman filter example, we would like to help)
- 2008-01-08 10:03:33下载
- 积分：1
