Digital signal processing

Ferrigno&d'amico window in matlab

The following Matlab project contains the source code and Matlab examples used for ferrigno&d'amico window. These windows are obtained by the polynomial expression w(n)=(16(n/Ns-1))^4-8(n/8Ns-1))^2+1)^L 0<=n<=(Ns-1)/2 w(-n)=w(n) where w(n) is the nth value of the window (in the time domain) and Ns is the number of samples of the window itself.

Extract instantaneous envelope and frequency from a bandlimited signal via hilbert transform. in matlab

The following Matlab project contains the source code and Matlab examples used for extract instantaneous envelope and frequency from a bandlimited signal via hilbert transform. .   HILBERT2 Extract instantaneous envelope and frequency from a bandlimited signal via Hilbert transform.

Fourier coefficient conversion in matlab

The following Matlab project contains the source code and Matlab examples used for fourier coefficient conversion. [a, b] = FOURIERexp2cossin(c) Calculate the cos (a) & sin (b) coefficients of the exponential Fourier coefficients (c) returned by fft(x)/size(x,1), while isreal(x) = true needs the unshifted coefficients as input c = FOURIERcossin2exp(a, b) Calculate the exponential Fourier coefficients (c) of the cos (a) & sin (b) coefficients while a(1) = a0 .

Up and down sampling in matlab

The following Matlab project contains the source code and Matlab examples used for up and down sampling. % This function is defined for both up and down sampling of % any signal x[n]:: [y m]= udnsample(x,n,M) % =========================================================== % |***For Down Sampling::If downsampling factor is 2 then M=2| % |***For Up sampling::If upsampling factor is 2 then M=1/2 | % ============================================================ % x is the input signal and n is axis for it.

Welchwin welch (parabolic) window function in matlab

The following Matlab project contains the source code and Matlab examples used for welchwin welch (parabolic) window function.  WELCHWIN Welch (parabolic) window  Usage:    w = welchwin(n) returns the n-point parabolic window     n: scalar window length     w: column vector of window values    Example:    t = (0:9)';    s = rand(1,10)';    n = length(s);    w = welchwin(n);    s2 = s.

Frequency band for dwt in matlab

The following Matlab project contains the source code and Matlab examples used for frequency band for dwt. Here :                     % "fs" is the sample frequency                     % "lv" is level of decomposition             % Output are :                     % "cA" is approximation frequency band                     % "cDlv" is matrix of "lv" detail frequency bands. @Hannover 26-Dec-2012

A user-friendly tool for signal filtering and feature extraction. well-suited to large data sets! in matlab

The following Matlab project contains the source code and Matlab examples used for a user-friendly tool for signal filtering and feature extraction. well-suited to large data sets! . FeatureFinder is a MATLAB-based software package that lets you organize your signals, visually review them with speed and ease, apply filters and normalization, and export meaningful signal features in a ready-to-analyze format.

Psd (power spectral density), and amplitude spectrum with adjusted fft in matlab

The following Matlab project contains the source code and Matlab examples used for psd (power spectral density), and amplitude spectrum with adjusted fft. Function [fy]=FFT(y,Fs)   1)computes the Power spectral density and Amplitude spectrum (P(f),F(f))   of 1d signal y(t) with sample rate Fs (Nyquist rate) which is known% apriori.

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