Optimized for identifying noise sources and
quantifying sound power, STARAcoustics™ simplifies testing and
helps you attain unmatched testing accuracy. It's comprehensive
features set enables you to transfer data from your instrument,
perform detailed analysis, view results in a variety of formats,
and produce high-quality reports.
Test Setup and Data Analysis
Quickly Set Up Standard or Custom Test
Configurations
STARAcoustics™ organizes data by project: All test
parameters related to the instrument, microphone, and
environmental conditions are conveniently located in a single
Project Slate.
New and occasional users can guide themselves
step-by-step through the acoustic intensity process by referring
to the STAR Gateway™, a process-oriented interactive graphic. Analyze
Measurements and Data Sets in a Flexible Display The
STARAcoustics™ program has a state-of-the-art, interactive
measurement display designed expressly for narrow band and
octave band acoustic measurements, including real, complex, and
bi-polar data. You can view individual measurements, or, because
the display accommodates an unlimited number of measurement
windows, view entire data sets to spot trends or anomalies. A
comprehensive set of display features-cursors, zooming, grids,
and scaling-enables you to focus on the measurements of
interest.
Comprehensive Measurement Analysis
Functions
The STARAcoustics™ program performs a very wide variety of
functions on narrowband and octave-band intensity or sound
pressure level (SPL) data. You can convert from narrowband cross
spectrum data to intensity in a single step and, if required,
synthesize data into 1/1 octave, 1/3 octave, or user-defined
bands. Weighting (A, B, and C) and correction (amplitude and
phase) are easily applied. Computing critical data evaluation
functions such as Pressure-Intensity(PI) index, Residual PI, and
Dynamic Capability index required no more than choosing a
command from a menu.
Automatic Checking of Measurement Quality
To check overall measurement quality, choose the Intensity
Evaluation command. STARAcoustics™ then automatically
configures the display to show the Dynamic Capability Index of
the measurement system and the PI Index of selected
measurements. You can then visually inspect measurements to
confirm that they are within the acceptable limits of the
dynamic capability of the measurement system.
Noise Source Identification
Locate Noise Sources
STARAcoustics™ graphs data in two or three dimensions to
help you identify the location of noise sources. Contour maps
handle both uniform and non-uniform test grids that match the
geometry of a planar test surface. 3D vector displays enable you
to examine the characteristics of sound fields, particularly
around non-uniform structures. The vectors provide insight into
noise source locations, strength of intensity, and propagation
direction.
Sound Power Analysis
Quantify and Compare Total Acoustic Energy
Using Sound Power
STARAcoustics™ uses the areas associated with each
measurement location to compute overall sound power. You can
view computed power levels in either tabular or chart formats,
in watts, decibels or percent of total power, and computed by
point, component, or overall level. You can rank data to quickly
identify significant sound power contributors or choose a single
command to compute the composite sound power spectrum from a set
of measurements.
Noise Source Ranking Highlights Key Noise
Contributors
Computing the sound power for points and groups of points,
called components, is a powerful technique for quickly locating
major contributors to overall noise. STARAcoustics™
automatically ranks points by power levels, clearly identifying
the most significant contributors to overall noise. To report
your results, select a tabular or graphical format, or export
the data to Excel for charting.
Included Spreadsheet for Versatile Graphic Displays
STARAcoustics™ includes the Microsoft Excel spreadsheet
application, which you can use to perform custom analysis and
create varied graphic displays of noise sources, such as bar
charts, pie charts, area charts, or 3D charts.
Testing To Standards
Confirm Compliance with ISO Standards
STARAcoustics™ automatically evaluates intensity data for
compliance with the ISO 9614-1 and ISO 9614-2 standards,
instantly confirming data quality and providing detailed
recommendations for standards compliance.
After you select an ISO standard and accuracy grade option,
STARAcoustics™ evaluates the collected
measurements and produces an easy-to-read report. The report
shows test criterion, measured values, computed functions,
limits, pass or fail, and action items for correcting fail
conditions.
Immediate Identification of Prominent
Discrete Tones
Identification of discrete tones is essential for solving
problems related to sound quality in devices with strong tonal .
noise contributors, such as electric motors and gears. Using ISO
7779 and ANSI SI 2.1 0 procedures, STARAcoustics™
automatically identifies the prominent discrete tones of a
narrowband SPL.
Data Acquisition Systems
Data Import
STARAcoustics™ gives you the flexibility to choose how you
work and which measurement system to use. For example, you can
connect STARAcoustics™ directly to FFT or real-time octave
analyzers to transfer measurements from either narrowband or
octave tests, controlling the process with a special GPIB
interface window. STARAcoustics™ optimizes the speed of data
acquisition with automatic features such as measurement average
completion detection, automatic transfer and save, point and
direction labeling, and measurement restart.
STARAcoustics™ also accepts measurement data saved to disk
in popular data formats. You import the data into STARAcoustics™
using a data disk translator, which allows you to select from a
variety of measurement labeling methods and data types. Batch
operation speeds the process.
Documenting Test Results
Professional Reports
STARAcoustics™ provides multiple options for efficiently
creating professional reports or presentations. All tables and
graphics can be exported into popular ASCII formats for
Spreadsheets and desktop publishing programs or copied and
pasted directly into other applications running in the Windows
environment.
STARModal is a registered trademark and
STARAcoustics™™, STARBase™, STARView™, STARStruct™,
and STAR Gateway™, STARReport, and The STAR System™ are
trademarks of Spectral Dynamics, Inc. Microsoft, Windows™, and
Excel™ are registered trademarks of the Microsoft Corporation.
All other products or service names mentioned herein are
trademarks of their respective owners.
In keeping with commitment to continuous
product improvement, the information herein is subject to
change.
