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.

Version 7.1, part of Release 2015b, includes the following enhancements:

• Reassigned Spectrogram: Sharpen the time-frequency localization of spectral estimates
• Hampel Filter and Improved Median Filtering: Detect outliers and remove them from data
• Order Analysis: Analyze vibrations in rotational machinery with order and frequency maps
• Envelope Detection: Extract analytic, peak, and RMS envelopes
• Signal Alignment: Measure delay and align signals in time

See the Release Notes for details.

Version 7.0, part of Release 2015a, includes the following enhancements:

• Frequency Measurements: Compute mean and median frequencies using spectral estimates
• Bandwidth Measurements: Compute occupied bandwidth and bandwidth at specified power levels

See the Release Notes for details.