Dirac 7 Release Notes

31-Aug-25 version 7.3.9374

  • Removed 48 kHz sample rate restriction on STIPA and Echo measurements
  • Added option to copy values from a project table to the Noise values on the Speech tab of the File Properties dialog.
  • Fixed HBK 2255 recording and RTA levels
  • Fixed RTA to correctly compensate for various FFT windows
  • Added proper scaling for calibrated signals in spectrum view
  • Implemented caching for resampled stimuli

18-Jul-25 version 7.3.9330

  • Added password prompts for HBK 2255 and 2755
  • Files uploaded to HBK 2755 are given a unique name

5-Jul-25 version 7.3.9317

  • Fixed aligner problem
  • Added 'Lag compensation' field for aligner
  • Fixed sample rate correction for asynchronous measurements with new stimuli
  • Fixed intermittent measurements with internal stimulus
  • Fixed non-Echo intermittent measurements
  • Fixed uncaught out of memory error
  • Improved mapping of v7 to v6 stimuli when saving a measurement in v6 compatible format

15-May-25 version 7.3.9266

  • Fixed measurement of source-receiver distance for (synchronous) intermittent signals
  • Fixed a posteriori level calibration for intermittent measurements with a single calibrated channel
  • Fixed calculation of DL-RI for EN 16272-5 due to typo in 2023 standard

24-Apr-25 version 7.3.9245

  • Integrated diffraction processing for MA25 array
  • Added DL-DI and DL-SI,G parameters
  • Updated Zircon dialog for diffraction with and without added device
  • Updated Zircon dialog for 'element' and 'post' transmission measurements
  • DL-RI, DL-SI,G and DL-DI are now calculated from the 'checked' groups in a project
  • The SNR parameter for Zircon measurements is now called SNRz to avoid confusion with the conventional SNR
  • Fixed lowest third-octave display in Zircon dialog
  • Fixed Adrienne window positioning for reflection measurements
  • Fixed error handling in interval selection dialog
  • Fixed rounding error in IR start marker drawing
  • Fixed 'Edit - Rotate' rounding error'
  • Fixed rounding error in Project - Edit - Set source-receiver distance
  • Fixed bug where project file manager could remove the wrong files
  • Limit the length of the DiracTrace.log file
  • Removed unnecessary graph legend entries for group level parameters
  • Fixed problem with initial parameter after project load
  • Added support for LAN-XI modules 3676 and 3677
  • Help file updates

21-Dec-24 version 7.2.9121

  • Fixed problem where Dirac would seem to hang on an empty project window
  • Bring background IR view to front when selected from the project window
  • Fixed source-receiver distance for intermittent measurements with loopback channel
  • DL-RI is now calculated using the proper lowest frequency band based on NRD dimensions
  • Changed default number of decimals for RI and SI to 2

5-Dec-24 version 7.2.9105

  • Fixed Zircon Adrienne windows dialog
  • STIPA signal is only available for Signal measurements
  • Fixed tooltips on Measurement window Aligner tab
  • Added note in help file about disabled OK button in Project - Save data dialog

28-Nov-24 version 7.2.9098

  • Changed e-sweep range from 125 - 4 kHz to 125 Hz - 8 kHz
  • Added support for 1793-5 'QuickScan' measurements (ASFiNAG)
  • SIp and SI values are displayed in red if below the lowest valid frequency
  • DL-RI and DL-SI ratios clipped at 0.99
  • MRU parameter list in Project window is updated after the creation of a Zircon group
  • Improved LAN-XI communication (longer timeouts)
  • Improved parsing of recorded measurements from HBK 2255
  • The 'None' input device now has a single virtual input channel by default
  • Fixed problem on import with user-defined stimulus
  • Improved scaling accuracy in PCM file write
  • Improved handling of infinities and other invalid values
  • Improved error handling while processing measurements

14-Oct-24 version 7.2.9053

  • Integrated processing of reflection and insulation measurements (EN 1793 and EN 16272)
  • Improved Zircon substraction calculations resulting in higher Rsub values
  • Added project level parameter DL-RI
  • Renamed previous RI to RIp (partial RI). RIp now incorporates Cgeo and Cgain values
  • Renamed previous SI to SIp (partial SI).
  • Added project level node to tree in Project window
  • Setup option to start Dirac with the project window rather than an IR window
  • Fixed (halved) length of non-Echo intermittent measurements
  • Distance in IR view statusbar is formatted conform SRDIST parameter
  • Trying to delete the last and only group will no longer delete it
  • Asynchronous setups can now have different recording and playback sample formats
  • Fixed a problem that occurred when switching the RTA between different spectrum views

1-May-24 version 7.1.8887

  • Updated array aligner feature to work with transmission measurements
  • Added missing aligner error messages
  • Fixed display of VU meters on some PCs
  • Improved LAN-XI playback
  • Cosmetic changes to RTA window

19-Apr-24 version 7.1.8875

  • Added array aligner feature
  • Fixed pasting of numbers in File Properties Speech tab
  • Added possibility to directly copy numbers from the project table to the file properties speech tab
  • Fixed problem where parameter MRU list was not always synchronized with graphed parameter
  • Updated code signing certificates

15-Jan-24 version 7.0.8780

  • Fixed problem where not all parameter values were calculated in the project window

30-Dec-23 version 7.1.8764

  • Added option to measure STIPA with a modulated noise signal
  • Added support for playback and recording using HBK LAN-XI modules
  • Added the option to set independent sample rates for playback and recording
  • Added automatic sample rate conversion to the playback rate on recording and import
  • Added SNR parameter for EN 1793 and EN 16272
  • Indicate file type ('Signal' or 'Impulse Response') in statusbar of IR window.
  • Display the IR derived MTI in the Speech table rather than MTI derived from modulated noise
  • Fixed issue with incorrect gain handling in VU meter
  • Removed extra row in RTA table
  • Fixed problem where RTA window only works once
  • Added menu in RTA window
  • Enabled RTA table copy, save and print
  • Fixed RTA 'Min-max hold' option
  • Clipboard copy using Ctrl-C enabled for RTA table
  • Fixed validation of Y-axis min/max values in RTA properties dialog
  • Fixed average time restore when FFT window size changes in RTA properties
  • Added seperation before weighted value in RTA bargraph
  • Fixed HBK 2255 calibrated values
  • STIPA and ECHO stimuli are only available with a 48 kHz playback rate
  • Sound device is no longer restarted at start of measurement
  • Removed loopback channel from the collection of processed files
  • The output volume of CoreAudio devices is only set to maximum when playback is active
  • Fixed missing links to help file from RTA
  • Improved description of upgrade procedure from version 6 in help file
  • Improved project window progress indicator and cancel button action
  • Added 'More...' item at end of MRU parameter list in project window
  • Fixed error in BulkTrim script
  • Help file updates

5-Jun-23 version 7.0.8556

  • Fixed handling of 65536 Hz rate in device setup window

31-May-23 version 7.0.8551

  • Use 16th order Butterworth octave band filters in STI calculations
  • Prevent exception when unloading a project
  • Corrected level of internal echo signal to match speech level
  • Strict separation between IR and signal parameters based on file property
  • Added 65536 Hz option to device setup sample rate selection
  • Added advanced setting to set the number of loopback channels for the 'None' recording device
  • Clarified 'Measuring sound intensity' help file topic
  • Fixed help file layout issues
  • Fixed missing level calibration ID in measured files
  • Changed ELA parameters to use full (power-of-2) file length
  • Skipped I/O delay compensation for signal measurements
  • Fixed internal Echo signal scaling
  • Update measurement window when output is (de-)selected
  • Improved RTA/Graph auto min-max Y values

Condensed changelist for DIRAC 7.0:

  • Multi-channel measurements
  • WiFi wireless measurements
  • HBK 2255 and 2755 support
  • Built-in RTA
  • Improved VU meters
  • New stimuli: esweep RA and AUDIO
  • New stimuli: intermittent sweeps
  • Cut esweep processing
  • Echo signal(s) playback
  • Microphone response correction
  • Pre-trigger recording option
  • Loopback channel for precise timing
  • Improved 1793-5:2016 support
  • Updated to support IEC 16268-16:2020
  • Updated to support ISO 3382-3:2022
  • Measurement previews in project window
  • Stimulus fade-in/out
  • Playback marker in time-domain IR view
  • Audible end of measurement indication
  • Device setup selectable from measurement window
  • Device setup is stored in the measurement setup