Version 8.1, part of Release 2018b, includes the following enhancements:

  • Signal Analyzer App: Preprocess signals using user-defined functions
  • Signal Analyzer App: Change sample rates of signals and convert nonuniformly sampled signals to uniformly sampled signals
  • Time-Frequency Analysis: Analyze signals using the Wigner-Ville distribution
  • Deep Learning Example: Identify morphological features of signals using recurrent neural networks

See the Release Notes for details.

Version 8.0, part of Release 2018a, includes the following enhancements:

  • Signal Analyzer App: Preprocess signals by smoothing and filtering
  • Signal Analyzer App: Detect transients and perform time-frequency analysis using scalogram view
  • One-Step Filtering: Filter signals using lowpass, highpass, bandpass, and bandstop responses
  • Time-Frequency Analysis: Perform empirical mode decomposition, Hilbert-Huang transform, and instantaneous frequency estimation
  • Time-Frequency Analysis: Estimate kurtogram, spectral kurtosis, and spectral entropy
  • poctave Function: Compute 1/N octave spectra and perform octave smoothing
  • Rotating Machinery: Estimate and track rotational speed from vibration signals
  • Deep Learning Example: Classify signals using long short-term memory networks

See the Release Notes for details.

Version 7.5, part of Release 2017b, includes the following enhancements:

  • Signal Analyzer App: Analyze sporadic signals with persistence spectrum and sharpen time-frequency estimates using reassignment
  • Signal Analyzer App: Extract and export signal regions of interest
  • Signal Analyzer App: Generate MATLAB scripts to automate analysis
  • pspectrum Function: Analyze power spectrum, spectrogram, and persistence spectrum of signals
  • Rotating Machinery: Remove noise coherently with time-synchronous averaging and analyze wear using envelope spectra
  • Modal Analysis: Use parametric methods for FRF and modal parameter estimation
  • Fatigue Analysis: Perform high-cycle rainflow counting
  • findchangepts Function: Find changepoints in spectrograms and other multivariate signals

See the Release Notes for details.

Version 7.4, part of Release 2017a, includes the following enhancements:

  • Signal Analyzer App: Perform time-frequency analysis using spectrogram view
  • Signal Analyzer App: Analyze timestamped signals
  • Modal Analysis: Estimate frequency-response functions and modal parameters of mechanical systems
  • Cross-Spectrogram: Compare time-frequency content of nonstationary signals
  • MIMO Spectral Analysis: Estimate cross-spectral density and coherence for multi-input/multi-output systems
  • Transfer Function Estimation: Compute unbiased estimates for SISO and MIMO systems containing additive input noise
  • dct and idct Functions: Compute four standard types of discrete cosine transform
  • Code Generation Support: Generate code for an expanded set of Signal Processing Toolbox functions

See the Release Notes for details.

Version 7.3, part of Release 2016b, includes the following enhancements:

  • Signal Analyzer App: Perform time- and frequency-domain analysis of multiple time series
  • Similarity Matching: Find patterns in data using edit distance or dynamic time warping
  • Order Analysis: Track orders and extract waveforms to analyze rotational machinery
  • Fourier Synchrosqueezing Transform: Obtain sharp time-frequency estimates and extract signal modes

See the Release Notes for details.

Version 7.2, part of Release 2016a, includes the following enhancements:

  • Gap Filling: Reconstruct missing samples using autoregressive modeling
  • Changepoint Detection: Find abrupt changes and statistical shifts in signals
  • Dynamic Time Warping: Stretch, align, and compare signals with different time scales
  • Reassigned Periodogram: Sharpen the frequency localization of spectral estimates

See the Release Notes for details.