LTFAT - Signal processing tools

General

• rms - Root Mean Square norm of signal.
• setnorm - Normalize signal by specified norm.
• gaindb - Scale input signal.
• crestfactor - Compute the crest factor of a signal.
• lowdiscrepancy - Compute a low discrepancy sequence.
• uquant - Simulate uniform quantization.

Window functions

• firwin - FIR windows (Hanning,Hamming,Blackman,...).
• firkaiser - FIR Kaiser-Bessel window.
• fir2long - Extend FIR window to LONG window.
• long2fir - Cut LONG window to FIR window.
• freqwin - Freq responses (Gauss,Gammatone,Butterworth,...)

Wavelet functions

• freqwavelet - Frequency responses of wavelets (Cauchy, Morse)

Filtering

• firfilter - Construct an FIR filter.
• blfilter - Construct a band-limited filter.
• warpedblfilter - Warped, band-limited filter.
• freqfilter - Construct a full length frequency side filter.
• pfilt - Apply filter with periodic boundary conditions.
• magresp - Magnitude response plot.
• transferfunction - Compute the transfer function of a filter.
• pgrpdelay - Periodic Group Delay

Ramping

• rampup - Rising ramp.
• rampdown - Falling ramp.
• rampsignal - Ramp a signal.

Thresholding methods

• thresh - Coefficient thresholding.
• largestr - Keep largest ratio of coefficients.
• largestn - Keep N largest coefficients.
• dynlimit - Limit the dynamical range.
• groupthresh - Group thresholding.

Image processing

• rgb2jpeg - Convert RGB values to the JPEG colour model
• jpeg2rgb - Convert values from the JPEG colour model to RGB

Tools for OFDM

• qam4 - Quadrature amplitude modulation, order 4
• iqam4 - Inverse QAM of order 4

Tonal-transient separation

• tfjigsawsep - Tonal-transient-residual separation using the T-F jigsaw puzzle algorithm.
• plottfjigsawsep - Plot the separated layers.

For help, bug reports, suggestions etc. please visit http://github.com/ltfat/ltfat/issues