Electroacoustics Toolbox History

January 12, 2010

Electroacoustics Toolbox 2.1.7 released

Version 2.1.7 is a maintenance release that improves the stability of the application.

 

January 5, 2010

Electroacoustics Toolbox 2.1.6 released

• The Dual FFT Analyzer now supports user-definable time delay of the reference input for each live measurement.
• A bug was fixed that led to a potential crash when computing an impulse response.
• The recent projects menu gets updated properly again.
• Impulse time weighting now passes the tone burst tests specified in ANSI S1.4.
• Some AppleScript behaviors were corrected.
• This release includes other minor bug fixes, stability enhancements, and cosmetic refinements.

 

Sept 17, 2009

Electroacoustics Toolbox 2.1.1 released

Version 2.1.1 is a maintenance release, which corrects data export problems in the DFFT Analyzer, which occurred when a window was applied to the impulse response. It also corrects some minor cosmetic issues.

 

Sept 3, 2009

Electroacoustics Toolbox 2.1 released

• Version 2.1 improves compatibility with Snow Leopard (Mac OS X, version 10.6).
• Transfer function measurements can be corrected by previous captured measurements.
• Memory management and stability have been improved.
• Product updates can now be automatically retrieved and installed.
• Individual input channel calibration is now possible within the Device I/O Setup window.
• Some oscilloscope triggering issues have been corrected.
• Cross-correlation functions are properly normalized
• Other minor bugs and cosmetic issues have been corrected.

March 10, 2009

Electroacoustics Toolbox 2.0.3 released

Version 2.0.3 is a maintenance release, which improves the performance of the fractional octave band filters and fixes menu commands and keyboard shortcuts for the primary data cursor in the Octave Analyzer.

 

February 11, 2009

Electroacoustics Toolbox 2.0.2 released

Version 2.0.2 is a maintenance release, which fixes a crashing bug associated with the Meter Bridge.

 

January 27, 2009

Electroacoustics Toolbox 2.0.1 released

Version 2.0.1 is a maintenance release, which fixes several bugs.

 

14 October 2008 Electroacoustics Toolbox Version 2.0 released

• Drag and drop installation
• Borderless analyzer windows
• New mouse cursor types for more intuitive interaction with data displays
• More efficient on and off-screen drawing
• More efficient Spectrogram drawing over all time scales and FFT lengths
• Improved page layout when printing
• Improved support for Leopard
• Improved channel selection--by checkbox or radio button
• Arm/disarm individual tools in the project window, so that Start, Capture, and Export All commands affect only the desired tools
• Dual FFT Analyzer
  • Harmonic cursors
  • Auto up-scale and auto down-scale for vertical plot scales
  • Option to synchronize changes in tables views across all rows
  • The normalized cross-correlation is normalized by the actual cross-correlation coefficient, rather than by the peak value of the cross-correlation function.
• FFT Analyzer
  • Harmonic cursors
  • THD, THD+N, SNR
  • Auto up-scale and auto down-scale for vertical plot scales
  • Option to synchronize changes in tables views across all rows
• Oscilloscope
  • Auto up-scale and auto down-scale for vertical plot scales
  • Option to synchronize changes in tables views across all rows
• Signal Generator
  • Option to disable oversampling in the signal generator
  • Pan type selection in signal generator Preference pane
  • Support for Audio Unit signal generator plug-ins
  • Support for signal processing via Audio Unit effects plug-ins
• Sound Level Meter
  • Input calibration
  • Impulse time weighting
• New Meter Bridge
  • Behaves like a multi-channel Sound Level Meter
  • Time weighting
  • Frequency weighting
  • Input calibration
  • Input and/or output channel selection (including individual channel selection)
• Enhanced AppleScript support
• Start/Stop All tools from Dock menu
• Dock icon indicates whether any tools are running
• UI improvements
• Support for user-defined unit labels
• Numerous bug fixes and stability enhancements
• Revised Help files

5 September 2007 Electroacoustics Toolbox Version 1.2.1 released

• Electroacoustics Toolbox now supports quasi-anechoic frequency response measurements.  The measured impulse response can be truncated (windowed), which will cause the transfer function measurements to be recomputed based in the shortened impulse response.
• The Meter Bridge tool now correctly saves and restores its selected input device.
• The Dual FFT Analyzer's auto-scale function always sets the vertical scale to 0.2 per division when viewing cross correlation data.
• Using reduced frequency spans in the Dual FFT Analyzer could previously result in corrupted measurements when using the analyzer's built-in excitation signal.  This has been repaired.
• Oscilloscope displays are more robust, particularly for large time scales.
• The Spectrogram 3D display no longer gets reset when clicking the Stop All button in the project window.
• Applescript is now supported by the feature-limited, 30-day demo.
• Several other bugs have been fixed.

23 April 2007 Version 1.2 released.

• Electroacoustics Toolbox is now scriptable!  Projects, measurements, data capture and export, and even displays can now be manipulated and automated via AppleScript.
• The project window has been enhanced with a toolbar and additional functions that are available within the project toolbox outline.  Each tool now has its own icon, which can be added to the project window toolbar for one-click addition of new tools to the toolbox.
• Controls have been added to send start/stop, capture, and export messages to all tools in the project toolbox.
• Data can now be exported to MAT-files, in addition to ascii text files.
• The Dual FFT Analyzer now includes a built-in signal generator to simplify the measurement process.  The excitation signal can be configured in the Excitation tab in the analyzer window's Controls drawer.
• The Dual FFT Analyzer now allows only a single live input channel to be selected, making single-channel autospectrum or autocorrelation measurements less cumbersome.
• The Spectrogram display no longer draws a blank image when displaying large data sets in 2D Fast mode.  Also, for some configurations, the 2D Fast mode is automatically selected/or deselected to ensure the display of a proper image.
• The Spectrogram 3D surface plot is now clipped at the boundaries defined by the floor and ceiling values.
• A new option in the Preferences, enables the user to choose whether Electroacoustics Toolbox should create a new project, open the most recent project, or prompt the user for a decision when it launches.
• Electroacoustics Toolbox now supports a feature-limited demo mode, which does not require a serial number to activate.
• Autoscaling of captured/paused data in the oscope and XY plotter works correctly
• Eliminated a lockup, which could cause audio I/O to halt when a long FFT was being computed.
• FFT and Dual FFT axis labels should be drawn correctly when viewing captured data, particularly when viewing time domain data in the Dual FFT Analyzer.
• The XY Plotter window has a much smaller minimum size.
• The Bartlett data window type is now implemented correctly.
• Cross spectrum magnitudes are now scaled properly
• Cross correlation functions are now normalized (equal to 1 at zero time lag)
• A third tutorial has been added to the Help files.
• Numerous improvements have been made to enhance the user experience and improve the stability of the application.

  21 Feb 2007 Version 1.1 released.

• New tool:  Octave Analyzer performs octave and 1/3-octave real-time spectral analysis
• New tool:  Spectrogram captures spectral history and even allows 3D data visualization
• Data capture and export support have been added to the Sound Level Meter and Noise Dosimeter tools
• SLM and Dosimeter tools operate more efficiently
• The SLM now offers better handling of non-acoustic signals by displaying the correct units of the selected input channel
• Meter Bridge control states are properly saved in project files
• Fixed a bug which could cause a crash when opening a project containing an FFT Analyzer with A or C frequency weighting selected
• Several other minor fixes & improvements

2 Jan 2007 Version 1.0.2 released.

• Oscilloscope waveform drawing is much more efficient and stable (particularly for long time scales of 50 ms/div or greater)
• Autoscale has been improved for linear-scale data, such as phase and group delay, in the Dual FFT Analyzer
• Tutorials have been added to the Help
• Project files in directories with spaces in the path name are properly added to the Recent Projects menu
• Audio device selection in individual tool popup menus is properly restored from a project file when output-only devices are present
• Frequency weighting has been removed from the Dual FFT Analyzer
• Cursors no longer appear in the XY Plotter
• Peak tracking is enforced when the FFT or Dual FFT analyzer is stopped
• Toggle Analyzer menu item renamed to Toggle Tool On/Off
• Phase is properly unwrapped before group delay is computed
• Project files created on a PowerPC-based Mac open correctly on an Intel-based Mac, and vice versa
• Includes several minor maintenance and cosmetic improvements

18 Dec 2006 Version 1.0.1 released.

• Users can now edit device names
• Device selection popup menus now support multiple devices with identical names
• Ascii text files containing exported data now include the FEaT version and revision numbers, as well as a unique ID for the device from which the data was acquired
• Relative phase between the Signal Generator's two sinusoidal signals is now preserved when the generator is stopped and restarted
• The Noise Dosimeter and Sound Level Meter can now properly capture data from an output channel (driven by the Signal Generator)

14 Dec 2006 Version 1.0 released.