Version 4.2.2

Changes

• Fixed bug causing low-frequency responses imported using ‘Low-frequency mode’ in the acoustic space import tool to fail to load

Version 4.2.1

Changes

• Added 'Standard' option to alignment method in the acoustic space import tool which enables use of the low frequency phase alignment algorithm from versions prior to 4.0.0
• Added ‘Pitch Shift - Simple’ option to spatial expansion method in the acoustic space import tool which enables use of the expansion algorithm from versions prior to 4.0.0
• Added 'Min. Phase FIR - Simple' option to Advanced Settings -> Calibration Method which enables use of the filter generation algorithm from versions prior to 4.0.0
• Included new option in Driver-to-Ear interaction EQ: “Reverberant Field Reference (Side)”
• Legacy Driver-to-Ear interaction EQ options are now hidden by default but can be enabled by setting ‘Show’ to ‘Yes’ in headphone_ear_comp_metadata.csv
• Added Calibration Low and High Cutoff Freq. (Hz) options to advanced settings to control the frequency range of diffuse field calibration

Version 4.2.0

Changes

• Separated ‘Headphone Compensation’ parameter into ‘Driver-to-Ear Interaction’ and ‘Loudness Compensation’
• Updated acoustic space import with additional parameters for fine tuning of time domain alignment and a seed parameter to allow for reproducible results
• Added backwards compatibility for acoustic spaces generated in versions prior to 4.0.0
• Added option in advanced settings to control length of FIR compensation filters
• Enhancements made to many existing acoustic spaces

Version 4.1.0

Changes

• Added ‘Anechoic Chamber’ option to acoustic spaces to allow for removal of reverberation
• Added ‘Max output length’ option in advanced settings which can be used to force trim/crop the outputs
• Updated acoustic space import tool with more parameters allowing finer control of the spatial transformation.
• Fixed a bug in the acoustic space import tool impacting time domain alignment accuracy
• Added new acoustic spaces including the rooms from ASH Listening Set
• Added new parameters in advanced settings for calibration control
• Added option in advanced settings to clear the cache files including downloaded acoustic spaces and HRTF related data

Version 4.0.0

Changes

• Merged Quick Configuration and Filter/Dataset Export into a single tab named “Headphone Correction & Spatial Audio”
• Added a range of new acoustic spaces
• Added new variations of existing acoustic spaces
• Added acoustic space collection filtering dropdown
• Added favourites system for acoustic spaces
• Added basic acoustic space info panel beside space selection
• Moved direction misalignment correction into listener tab. Included common elevation correction options.
• Added new room targets
• Added new low frequency responses
• Added new over-ear and in-ear headphone correction filters
• Added option to apply different headphone targets to correction filters (DF, Harman, etc.)
• Added option to apply high-frequency smoothing above 7 kHz to correction filters
• Added option to acoustic space import tool to select HRIR dataset during import
• Added summary plot mode (integrated response only)
• Added selectable azimuth and elevation for HRTF plots
• Added spatial resolution option to E-APO configuration tab to allow for additional elevations to be selected
• Added option to export SOFA at all spatial resolutions. Previously it was only available when ‘high’ was selected.
• Added revert selection button to revert parameters to previously applied values
• Improved interpolation quality and phase handling
• Improved quality of diffuse-field calibration of HRTF datasets that have sparse spatial grids
• Fixed issue in acoustic space import tool allowing folder changes while processing
• Fixed issue causing mute selection to be ignored in certain scenarios
• Fixed compatibility issues with linux in the python distribution
• Fixed bug where a change in headphone filter was not applied if selection wasn’t re-applied before
• Improved SOFA convention compatibility
• Fixed bug causing incorrect headphone filter to be applied in cases where the headphone selection is
• changed by the user but not yet applied then binaural simulation is applied
• Fixed bug causing acoustic space import to fail when low frequency mode is enabled and few IRs are supplied
• Numerous bug fixes and internal consistency improvements

Version 3.7.0

Changes

• Added option to disable diffuse-field calibration of HRTFs. Available under additional settings.
• Added option to correct common orientation errors in SOFA datasets. Available under additional settings.
• More plotting options available: magnitude response, impulse response, group delay, and decay.
• Low frequency extension can now be bypassed by setting crossover frequency to 0Hz
• Various GUI changes
• Fixed bug causing directions to update in equalizer APO before new wav files were saved when changing directions in channel configuration
• Fixed bug causing check acoustic space updates to point to old data
• Fixed bug where favourites listener list would still show ‘Averaged HRTF’ even if the file was removed.
• Fixed issue causing high frequency peaks from EQ artefacts when pitch shift compensation is enabled in acoustic space import

Version 3.6.3

Changes

• Fixed issue causing sample rate changes to not be applied in certain scenarios
• Fixed issue causing headphone selection to reset to first available headphone on start up in cases where active database was changed before closing the app
• Fixed issue causing changes in parameters to not be applied in cases where settings.ini file was manually swapped with another file.
• Apply selection & parameters buttons will now always start processing again from scratch when clicked. The button previously did nothing if it detected no change in parameters.
• Minor GUI clean up and logging improvements

Version 3.6.2

Changes

• Included default playback device information in the quick configuration tab
• Improved quality and speed of create average listener function
• Fixed WAV file writing issue potentially causing some older WAV files to not be overwritten when applying new parameters

Version 3.6.1

Changes

• Fixed issue causing headphone correction filters to not be rewritten after changing sampling rate or bit depth in quick configuration and filter export tabs
• Fixed issue causing BRIR export to fail when switching directions in quick configuration tab
• Optimised HRTF averaging method used for averaged listener creation

Version 3.6.0

Changes

• Added new database selection under headphone correction section. The ‘ASH Filters’ option is the main database and the ‘Compilation’ option contains filters derived from measurements from various datasets.
• Added option for FFMPEG compatible 16 channel WAV BRIR export
• Added new tab under quick configuration to save and load presets
• Added function to create averaged listener. User can click ‘Create Average’ under listener list when favourites are selected to generate the average.
• Added option “None” under headphone compensation
• Added new acoustic spaces: Conference Room B, Living Room, Treated Room, Tennis Court C, Broadcast Studio C, Yoga Studio, Lobby B, Lecture Room C.
• Regenerated some existing acoustic spaces.
• Renamed existing acoustic spaces: Studio C -> Recording Studio A, Studio D -> Recording Studio B, Auditorium B -> Lecture Hall A, Auditorium C -> Auditorium B, Auditorium D -> Auditorium C, Large Room -> Large Treated Room, Seminar Room D -> Lecture Hall B
• Added new low frequency response: Low-frequency Response K. Included descriptive labels.
• Fixed issue causing some correction filters to be unable to be located by the app after applying filters