erjidaolibai

传统的短时谱估计语音增强算法通常假设语音谱分量相互独立，没有考虑语音谱分量间的相关性。针对这 一问题，该文提出一种新的基于多元Laplace分布模型的短时谱估计算法。首先，假设语音的离散余弦变换(DCT) 系数服从多元Laplace分布，以此利用谱分量间的相关性；在此基础上，利用多元随机矢量的高斯尺度混合模型表 示，推导得到语音DCT系数矢量的最小均方误差(MMSE)估计的解析表达式；并进一步推导了基于该分布模型的 语音存在概率，对最小均方误差估计子进行修正。实验结果表明，该算法在抑制背景噪声和减少语音失真等方面优 于传统的语音增强方法。(The spectral components of speech are usually assumed to be independent in traditional short-time spectrum estimation, which is not the case in practice. Tosolve this problem, a new speech enhancement algorithm with multivariate Laplace speech model is proposed in this paper. Firstly, the speech Discrete Cosine Transform (DCT) coefficients are modeled by a multivariate Laplace distribution, so the correlations between speech spectral components can be exploited. And then a Minimum-Mean-Square-Error (MMSE) estimator based on the proposed model is derived using a Gaussian scale mixture representation of random vectors. Furthermore, the speech presence uncertainty with the new model is derived to modify the MMSE estimator. Experimental results show that the developed method has better noise suppression performance and lower speech distortion compared to the traditional speech enhancement method. )

绝对量化子程序 《数字信号处理教程——MATLAB释义与实现》 绝对量化子程序(Absolute quantification procedure " digital signal processing tutorial- MATLAB Interpretation and Implementation" absolute quantification subroutine)

這是我自己寫的 matlab 簡易入門的原始碼，我只是個初學者。(This is my own writing simple entry matlab source code, I' m just a beginner.)

arma模型预测的matlab代码 很完整 有注释 适合新人(ARMA model prediction matlab code is complete, annotated, suitable for newcomers)

matlab仿真程序，适合初学者，比较实用，可用性高。(matlab simulation program, suitable for beginners, more practical, high-availability.)

Inverter control_SVPWM

HSDPA调度算法研究，TD-SCDMA引入HSDPA技术后，对小区基站覆盖范围内的用户进行调度选择的问题。(After HSDPA scheduling algorithm, TD-SCDMA HSDPA technology introduced for users within the cell site coverage for problem scheduling choice.)

matlab 高级应用的一些例子，希望对大家有所帮助(matlab examples of advanced applications, we hope to help)

维特比译码算法，采用matlab语言进行编写，与自带的一致，可验证(Viterbi decoding algorithm, using matlab language writing, consistent with the built-in, verifiable)

lasso算法，分为很多子类，可以单独运行(lasso algorithm)