LOOK 5.00 Download

LOOK 5.00 Description

"LOOK is a program for digital signal analysis and graphical display."

EditByBSEditor: LOOK is a program for digital signal analysis and graphical display. It also performs some digital signal processing functions and can save the results to a disk file. Input is from data files stored on disk or signals generated within the program.

LOOK can read time or Frequency domain input signals from disk

1.Real time domain data
2.Complex time domain data
3.Real frequency domain data
4.Complex frequency domain data
LOOK can read two independent real or complex signals of any type.

LOOK can generate real or complex signals from an arbitrary Equation.

LOOK is intended for use with uniformly sampled data. That is, the sampling interval of the x axis (time, frequency or whatever) must be uniform throughout the data file. Non-uniformly sampled data is NOT supported except for the X-Y plot case.

The program can perform various signal processing operations:
1.Fourier transforms and inverse Fourier transforms .
2.Windowing -- Cosine, Cosine-squared, Rectangular, Kaiser or notch.
3.Linear transforms -- add a constant, multiply by a constant, multiply by a complex exponential or multiply by a sinusoid
4.Filtering -- Chebyshev, Butterworth, Transitional, Bessel filter or arbitrary H(s) (Laplace transform). It will generate The Filter functions and apply them to the input signal.
5.Change sampling rate -- upsample and downsample.
6.Differentiation and integration.
7.Autocorrelation .
8.Convolution
9.Crosscorrelation
It can also graph, list or save to file various parameters of the input signal(s):
1.Real component
2.Imaginary component
3.Amplitude (absolute value)
4.Power
5.Phase
6.Instantaneous frequency (FM demodulation)
7.Group delay of filters
8.Deviation from linear phase
9.X-Y (Lissajous) graphs
10.Product of real and imaginary parts
11.Sum and difference of real and imaginary parts
12.Linear regression lines
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