main_bitloop

基于matlab语言环境下的ARMA(1,1)模型的参数估计(Based on the matlab language environment ARMA (1,1) model parameter estimation)

In these source codes we have investigated the random planar array performance in terms of the half power beam width, the gain of an array of N elements and side lobe performance. The objective was to apply these results to wireless sensor networks to first form a search beam to locate adjacent wireless sensor networks , then form a narrow high gain beam to form a communications link.

说明：  基于最小二乘的Matlab拟合算例 相当好用(Based on the Matlab least squares to be quite cost-effective use cases)

说明：  模拟退火算法解决最优路径问题，此程序只需根据需要输入数据即可，验证过了，可行(the best way)

Function pitch, find the main pitch period value of a voice record...

used to write data to excel

fit_ML_rayleigh - Maximum Likelihood fit of the rayleigh distribution of i.i.d. samples!. Given the samples of a rayleigh distribution, the PDF parameter is found fits data to the probability of the form: p(r)=r*exp(-r^2/(2*s))/s with parameter: s format: result = fit_ML_rayleigh( x,hAx ) input: x - vector, samples with rayleigh distribution to be parameterized hAx - handle of an axis, on which the fitted distribution is plotted if h is given empty, a figure is created. output: result - structure with the fields s - fitted parameter CRB - Cram?r-Rao Bound for the estimator value RMS - RMS error of the estimation type- ML

说明：   , =2π, =1/2π,取采样周期 =π/2, =2/π=4 满足采样定理： ,N=5,10,20。 比较 与 。(, = 2π, = 1/2π, take the sampling period = π/2 = 2/π = 4 satisfy the sampling theorem: N = 5,10,20. Compare with.)

文件中的程序是蚁群算法在最短路中的应用，稍加扩展即可应用于机器人路径规划。(File in is the procedure ant colony algorithm in most short-circuit the application of, a little expansion can be applied to robot path planning.)

耳蜗实质上相当于一个滤波器组，耳蜗的滤波作用是在对数频率尺度上进行的，在1000HZ下，人耳的感知能力与频率成线性关系；而在1000HZ以上，人耳的感知能力与频率不构成线性关系，而更偏向于对数关系，这就使得人耳对低频信号比高频信号更敏感。Mel频率的提出是为了方便人耳对不同频率语音的感知特性的研究。频率与Mel频率的转换公式为(Cochlear substantially equivalent to a filter set, cochlear filter is used on logarithm frequency scale, under the 1000 hz, the perception of the human ear and a linear relationship with frequency In more than 1000 hz, the perception of the human ear does not constitute a linear relationship with frequency, and prefer to logarithmic relationship, which makes the human ear is sensitive to low frequency signal is better than high frequency signal. Mel frequency is put forward in order to facilitate the ear of the study of speech perception characteristics of different frequency. For frequency and Mel frequency conversion formula )