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Related Code
Alpha Beta Cutoff
Alpha Beta Cutoff Code
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Code 1-18 of 18   

Performs hierarchical clustering of data using specified method and
seraches for optimal cutoff empoying VIF criterion suggested in "Okada Y. et al - Detection of Cluster Boundary in Microarray Data by Reference to MIPS Functional Catalogue Database (2001)".
Namely, it searches cutoff where groups are independent. The techinque uses an econometric approach of verifying that variables in
multiple regression are linearly...

Derive coefficients for a shelving filter with a given amplitude and cutoff frequency. All coefficients are calculated as described in Udo
Zolzer's DAFX book (p. 50 -55).

Usage: [B,A] = shelving(G, Fc, Fs, Q, type);


This recipe uses the win32file.FindFilesW() function to efficiently calculate total size of a folder or volume, and additionally handles cases where a cutoff size is desired or errors are encountered along the path.

Plots Rectangular, Hamming and Flat top WINDOWS responses. Also plots the spectrum of the wav signal before and after applying the lowpass filter. Then writes the WAVs of these signals.

Parameters that were made to be set:

horn.m is the main program which designs exponential and catenoidal horns. The user inputs the cutoff frequency (Hz) and the throat radius in (meters).

horn.m calculates the required length and shape constant of the horn to efficiently...

Impulse response invariant discretization of BICO (Bode's Ideal Cut-Off) transfer function
BICO TF= 1./((s./w0+sqrt((s./w0).^2+1)).^r);
r is a positive real number
Ts: The sampling period
w0: Cutoff frequency

Step response invariant discretization of BICO (Bode's Ideal Cut-Off) transfer function
BICO TF= 1./((s./w0+sqrt((s./w0).^2+1)).^r); r is a positive real number
Ts: The sampling period
w0: Cutoff frequency

In this code I have implemented a low pass filter using the filtfilt command. It plots the actual data, filtered data and the filter characteristics. Its pretty well commented out. Feel free to change portions of the code depending on your...

FastCube is a handy tool for efficient analytical data arrays handling.
FastCube usage for report building does not require a programmer's high skill level.
Build FastCube into your applications created in Delphi or Lazarus...

This function returns coefficients of Gaussian lowpass filter.
Advantages of Gaussian filter: no ringing or overshoot in time domain.
Diasadvantage: slow rolloff in frequency domain.
Pass SR=sampling rate, fco=cutoff freq, both in...

function [g] = FFTPF1D (X,binsize, f, P)
Discrete Fourier Transform Low/High Pass Filter.
% This is a simply implement of such a filter for a given 1-D data.
X: the array of you data, each data point is a bin of signal

A fourier filter for time-series signals. Version 1.5, May 4, 2007, is calibrated specifically for time-based signals. Does not require the Signal Processing Toolbox. By adjusting the parameters, you can create lowpass, highpass, bandpass, and...

Conversions of these routines into Matlab.From:, W.L, 1983, Fourier cosine and sine transforms using lagged convolutions in double-precision (Subprograms DLAGFO/DLAGF1): U.S. Geological...

ButterParam - Fast parameters for a digital Butterworth filter

The calculation of filter parameters with BUTTER is expensive. Therefore ButterParam stores calculated parameters in a lookup-table to accelerate repeated calls with the...

PEAKFIND general 1D peak finding algorithm


This sounds at first like a trivial task, but in practice took something that works correctly and faster for larger datasets (i.e. without using a simple find or related statement each time within a for loop). Thus I am submitting this here in...

% Confusion matrix-based model performance summary tool.
% Works with character and numeric data, for any number of groups.
% Displays your confusion matrix as a 3D bar chart of your observations,
% broken down by their...

Taxonomy NCO uses Normalised Co-Occurrence analysis to look for relationships between terms in a freetagging vocabulary. This allows us to infer semantic relationships between terms.

These modules have been developed at School of...