信号处理工具箱:

• Signal Analyzer App: Preprocess signals by smoothing and filtering• Signal Analyzer App: Detect transients and perform time-frequency analysis usingscalogram view• One-Step Filtering: Filter signals using lowpass, highpass, bandpass, and bandstopresponses• Spectral Measurements: Kurtogram, spectral kurtosis, and spectral entropy• Rotating Machinery: Estimate and track rotational speed from vibration signals1 Signal Analyzer App

继续增加功能:

1 信号预处理, 包括平滑与滤波.

2 侦测瞬时变化和画尺度谱.(感觉是要添加小波分析?)2 不太明白"One-Step Filtering"是什么意思, 是易用的意思?

3 Kurtogram, spectral kurtosis, and spectral entropy 这几个名词之前没听说过, 信号处理果然博大精深, 等新版本出来再学吧.

计量经济学工具箱:

• Econometric Modeler App: Perform time series analysis, specification testing,

modeling, and diagnostics

编程编多了后, 就越来越喜欢用App了, 先通过App, 来 get idea, 再编程, 可以节省不少时间.

小波工具箱:

Filter Banks for Continuous Wavelet Transform: Create, visualize and use filter

banks for Time-Frequency Analysis

• Filter Banks for Discrete Wavelet Transform: Explore time-frequency characteristics

of wavelets and scaling functions

• Constant-Q Transform: Perform adaptive time-frequency analysis using

nonstationary Gabor frames

• Scalogram View: Detect transients and perform time-frequency analysis with the

Signal Analyzer App

• Empirical Mode Decomposition and Hilbert-Huang Transform: Data-adaptive timefrequency

analysis for nonlinear and nonstationary processes

• Continuous Wavelet Transform: Improved control of time-frequency parameters and

timetable support

有一个亮点: EMD分解和希尔伯特-黄变换加入了MATLAB套餐中了!

大概看了一下"Release Notes", 最让人眼前一亮的是:

• Startup: Increased speed of MATLAB startup time• Execution Engine: Execute tight loops with scalar math faster• Execution Engine: Improved performance for common programming patternsMATLAB

最近几个版本不断在提速, 不更新版本的话, "MATLAB循环速度慢"这种观点很可能过时了.在使用的时候, 经常发现循环比矩阵运算快的例子, 预计以后这样的例子会越来越多。