Noesis Main Page
Data Handling Capabilities
can load and use either acoustic emission data in the form of PAC DTA, TDA
and WFS (Waveform Streaming) files or arbitrary data from any application in the form of
ASCII text files (TXT module required).
The data is loaded in a Noesis document which provides the environment
to handle data (view, filter, group etc.). The user has almost infinite
choices as to how the
data is viewed
and analyzed. Below is a list of some of the operations the user can
perform when manipulating data (either acoustic emission or arbitrary).
(see also Source Location).
Any number of data
points can be selected by mouse or pre-set operations (such
as cluster selection, data point by number etc.) including logical selection
modes (AND, OR, AND-NOT). Selections reflect on ALL views,
drastically enhancing the users insight.
be made on ANY plot (scatter, projections, tabular, cumulative,
waveform, FFT etc.).
can be filtered, either graphically in plots, or from
the data set (data point removal) with simple filtering, selection
and delete operations. Complex Filtering can be applied
through the Data Filters dialog with set-up save/load capability.
Entire time segments can be removed.
Filter dialog. The user can easily set the ranges, combine features
and use AND, OR, Accept, Reject operations to achieve any filtering
Data (AE or other)
can be sorted to any of the available features. The user can thus time
order data or sort them to view their structure based on a feature.
Filter data and
save results back to a new DTA or DTA/TDA/WFS depending
on original format.
and save results back to a new DTA or DTA/TDA/WFS
depending on original format.
Manage Time Marks (Add, Edit, Delete)
and save the information back to acoustic emission data files.
Special functions allow the user to
optimize large DTA file loading (with or without waveforms) to
utilize best the available hardware. Large files are considered with
more than 1M hits.
Data projections can be generated based on covariance and correlation
matrices to project the data (AE or other) to a maximum separation
operations are available for data transfer to other applications. This
includes data, waveforms/DSP/FFT and bin values in cumulative or bar
Waveform Feature Extraction (FX) for the whole data set (all
files/channels) is available with full hardware control. This feature
applies only to Acoustic Emission data files (DTA, TDA and WFS).
Noesis can extract features even break-down waveforms to multi-hits.
Extraction supports a large number of additional features in time
and frequency domains. On individual records
with AE waveforms the user can adjust the extraction parameters and
temporarily view and compare the new features with the existing ones
WFS and TDA files
benefit from FX as they can be used in Noesis as any other data file
and not just waveforms.
Calculated Features (CF) can be added to the data using mathematical
operations between existing features (subject to
A Feature Calculator is also available that can use functions
such as trigonometric, exponential etc along with features and numbers
to produce any feature imaginable. In this manner feature space can be
converted to other scales.
sorting to any feature (Time, FX Time, other features)
Import external (user generated) parametric files.
with Time Driven Data only.
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