Signal Visualization & Analysis
TopicOverview »
Signal analysis is the task of transforming, manipulating and interpreting signals to extract useful information and gain insight into the properties of the systems that created them. The role of signal visualization is to graphically display signals to make the relevant patterns, trends and anomalies visible to the human eye.
Visualization »
ListPlot — plot a discrete-time signal
ListLinePlot ▪ DateListPlot ▪ Histogram ▪ ...
Feature Extraction
FindPeaks — find peaks in a signal
FindAnomalies — find anomalies in a signal
CrossingDetect ▪ ContourDetect ▪ MinDetect ▪ MaxDetect
Statistical Analysis »
Histogram — plot a signal histogram
HistogramList ▪ Mean ▪ Variance ▪ FindFit ▪ MovingAverage ▪ ...
Spectral Analysis »
Fourier — compute the discrete Fourier transform of a signal
Periodogram — show power spectrum of a signal
PeriodogramArray ▪ InverseFourier ▪ FourierSequenceTransform ▪ ...
Time-Frequency Analysis »
Spectrogram — show the time-frequency content of a signal
ShortTimeFourier — compute the short-time Fourier transform of a signal
InverseShortTimeFourier ▪ InverseSpectrogram ▪ SpectrogramArray ▪ Cepstrogram ▪ CepstrogramArray
Wavelet Analysis »
DiscreteWaveletTransform — discrete wavelet transform (DWT)
DaubechiesWavelet — Daubechies wavelet family
InverseWaveletTransform ▪ WaveletListPlot ▪ WaveletScalogram ▪ ...
Time Series Analysis »
DateListPlot — plot a time series
MovingMap ▪ Differences ▪ TimeSeriesModelFit ▪ TimeSeriesForecast ▪ ...
Audio Analysis »
AudioPlot — plot an audio signal
AudioMeasurements ▪ AudioLocalMeasurements ▪ AudioIntervals ▪ ...
Image Analysis »
ImagePeriodogram — show frequency content of an image
ImageMeasurements ▪ EdgeDetect ▪ FindFaces ▪ ...