hibernate_annotation

说明：  非常实用的OFDM matlab程序，只有一个m文件，程序简单易懂，包括完整的OFDM调制解调过程，能够正确运行，对OFDM的初学者非常有帮助。(Very useful OFDM matlab program, there is only one m file, the program simple and easy to understand, including the complete OFDM modulation and demodulation process to run correctly on the OFDM beginner very helpful.)

波束空间MUSIC算法（music算法中的一种），对多个不同方向的信号进行入射角估计，里面包含了m文件、理论推导、仿真结果以及相关讨论。(Beam space MUSIC algorithm (a) the music algorithm, a number of different directions, the signal of the angle of incidence is estimated, which contains m documents, theoretical analysis, simulation results and related discussions.)

bounding boxes for faces detection

谐波分析：输入正弦波、输出正弦波。分析输出谐波成分(xiebofenxi)

说明：  一个用MATLAB实现的CA滤波模型，适合初学者，文件不长稍微有点基础的都能看懂(A the CA filter model using MATLAB, for beginners, file does a little bit of foundation can understand)

高精度、低功耗模数转换器是当今集成电路设计模拟领域的研究热点之一，采用sigma-delta调制原理和过釆样原理的模数转换器广泛使用在音频、数字网络、电子测量等系统中。此类模数转换器，为降低信号带内的量化噪声功率，而釆用噪声整形技术，为提高模数转换器的信噪比，使用过采样技术，将基带中的量化噪声调制到了高频区域，这样就增加了基带中的信噪比，也就是增加了转换器的有效量化位数，由于采用较高的过采样率，Sigma-Delta ADC的转换速率相对较低，高精度和较低转换速率的特点，使得Sigma-Delta ADC特别适用于测量。(High precision, low power analog to digital converter is in today s integrated circuit design simulation has become one of the hot research field, the principle of sigma-delta modulation and ADC sampling principle is widely used in audio, digital network, electronic measurement system. This type of analog-to-digital converter, in order to reduce the quantization noise power signal in the band, and the use of noise shaping technique, in order to improve the SNR of the analog-to-digital converter, using the oversampling technique, modulate the quantization noise in the baseband to the high frequency region, which increases in the baseband signal to noise ratio, that is to increase the effective number of quantization bits converter, due to the sampling rate is high, the Sigma-Delta ADC conversion rate is relatively low, the characteristics of high accuracy and low conversion rate, so that Sigma-Delta ADC is especially suitable for measuring)

In this directory, we can find the eleven files. The relationship between file name and the number of program written in the book is shown in as follows.

采用谱减法的语音降噪实现代码，适用于语音和音频系统中，可直接调用。(Speech noise reduction using spectral subtraction implementation code, for voice and audio systems, can be called directly.)

英国谢菲尔德大学推出的GA算法工具箱，只能说，很好，很强大(GA toolbox by Sheffield Univ, excellent and perfect.)

This function plot a series of rects described from the N columns of a matrix 4xN, each column is of the form [x,y,w,h]