Electroacoustics Toolbox
The gold standard in Mac-based acoustical testing and measurement.

Electroacoustics Toolbox History


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.