**barthannwin**

Bartlett-Hann window.**besself**

Create a Bessel filter.**besself3**

Create a Bessel filter.**blackman**

Blackman window.**butter**

Create a Butterworth filter.**buttord**

Design a Butterworth filter.**cheb1ord**

Design a Chebyshev I filter.**cheb2ord**

Design a Chebyshev II filter.**chebwin**

Dolph-Chebyshev window.**cheby1**

Create a Chebyshev I filter.**cheby2**

Create a Chebyshev II filter.**cpsd**

Compute cross power spectral density.**downsample**

Downsample a signal.**ellip**

Create an Elliptic filter.**ellipord**

Design an Elliptic filter.**fft**

Fast Fourier Transform.**fft2**

Two Dimensional Fast Fourier Transform.**fftn**

N dimensional fast Fourier transform (FFT).**fftshift**

Shift frequency spectrum related vectors to center first element.**filter**

Filter a signal with an IIR or FIR filter.**filtfilt**

Filter a signal forward and then backward, compensating for end effects.**findpeaks**

Locate the peaks of a signal.**fir1**

Create a digital FIR filter.**firls**

Create a digital FIR multi-band filter with a least squares fitting.**fold**

Create one-sided spectrum amplitude vectors from the two-sided equivalents.**freq**

Generate a vector of frequency locations.**freqs**

Compute analog filter frequency response values.**freqz**

Compute digital filter frequency response values.**hamming**

Hamming window.**hann**

Hann window.**ifft**

Inverse Fast Fourier transform.**ifft2**

Two-dimensional inverse fast Fourier transform.**ifftn**

N dimensional inverse fast Fourier transform.**impz**

Compute the impulse response of a digital filter.**invfreqs**

Compute analog filter coefficients from frequency response values.**invfreqz**

Compute digital filter coefficients from frequency response values.**kaiser**

Kaiser-Bessel window.**mscohere**

Estimates the mean squared coherence of time domain signals.**parzenwin**

Parzen window.**pwelch**

Computes the power spectral density.**sinc**

Compute the sinc function.**tfestimate**

Estimates the transfer function from time domain signals.**unwrap**

Unwrap a vector of phase angles.**upsample**

Upsample a signal.**welchwin**

Welch window.**xcorr**

Cross correlation.