koch_internship

a collection of M-files to study concepts in the following areas of Fuzzy-Set-Theory: Fuzzy or Multivalued Logic, The Calculus of Fuzzy, Quantities, Approximate Reasoning, Possibility Theory, Fuzzy Control, Neuro-Fuzzy Systems.

说明：  混响模型的Matlab仿真，源码、公式算法(Matlab simulation of the reverberation model, source code, the formula method)

a som application, for those who are new in neural network and matlab!

Buck modeling Matlab/Simulink

This file contains different algorithms of control in simulink matlab.

研究表明超高斯分布更加贴近语音信号的实际分布，然而语音信号很难用单一的概率密度 函数准确描述，针对这一情况，提出了一种用超高斯混合模型对语音信号幅度谱建模的新方法，并推导了 基于此模型的幅度谱最小均方误差估的估计式。仿真结果表明：与传统的短时谱估计算法相比，该算法不 仅能够进一步提高增强语音的信噪比，而且可以有效减小增强语音的失真度，提高增强语音的主观感知 质量。 (Recent research indicates that the speech spectral amplitude distributions could be fairly described with super-Gaussian probability density function. However, the complexity of speech signal determines that the distribution statistics ofspeech signal could not be well described by single simple function. Thus a super-Gaussian mixture model for speech spectral amplitude is proposed, and with this model, a minimum mean-square error (MMSE) estimator for speech signals spectral amplitude is derived. The simulation results show that this algorithm based on Gaussian and super-Gaussian speech model could achieve better noise suppression and lower speech distortion as compared with the conventional short-time spectral amplitude estimation algorithm. )

fuorier and matlab design(fuorier and matlab)

we can calculate pSNR ratio in matlab

说明：  使用人工神经网络（ANN）实现手写数字体识别(Handwritten digit recognition)

说明：  实现matlab的ofdm编程，可以实现的，(Implementation of ofdm matlab programming, can be achieved,)