What's new?

Only major additions listed. *) means not available in demo version (some features
are included but limited in the demo version, refer to the manual about Software
variants and limitations for details).

• CATT-Acoustic™ v9.1g/h with TUCT2 v2.0h  (4-SEP-2024)
  
  • Novel TUCT2 Show2D and Echogram displays based on XYZ B-format decays showing when and why rooms are non-diffuse.
    

• New distributor Poland (24-JUN-2024)

• CATT-Acoustic™ v9.1g build 1 (31-MAR-2022)

• A whitepaper: GA-Prediction vs Measurements how close can they be? (12-DEC-2021, v5 6-OCT-2022)
  
  
• CATT-Acoustic™ v9.1f build 1 (30-OCT-2020)

• Use of the new Common Instrument Format (CIF) based on the Common Loudspeaker Format (CLF)
  principles but made for the directivity of natural sources such as musical instruments, human talkers and singers,
  noise sources etc.

• The special covid-19 outbreak trial below is no longer available (5-JUN-2020)
  
  
• A free CATT-Acoustic™ v9.1e build 2 trial covid-19 outbreak (full prediction and demo auralization)
  (30-MAR-2020) was offered for students (where the department needs to had a license covering  v9.1),
  and consultants give company name and web address. The trial option was discontinued  (31-MAY-2020).
  
  
• CATT-Acoustic™ v9.1e build 2 (16-DEC-2019, refreshed 18-DEC)

• Most software parts now use PDF help instead of CHM
  
  
• The FIReverb Suite™ 6th ed. (also standalone), PL9-files, PDF help, dialog font size option *)
  
  
• ReflPhinder™ v2.0e (also standalone) with echo disturbance for speech, auto-scale and Save View As (IR) *)
  
  
• The smaller programs have a separate option to change dialog font size
  
  
• Demo update
  

• CATT-Acoustic™ v9.1e build 1.02 (27-JUN-2019)

• CATT-Acoustic™ v9.1e build 1.01 (25-APR-2019)

• General
• additions to make network use more practical
  
• CATT-A and TUCT2 switches to PDF-only help
  
• CATT-A
• Creation of sector directivity-files (.SDX) as a replacement for
  the SECTOR0 SD2 (DLL-interface) also having synthetic perfect
  cookie-cut directivities but that can be used with TUCT2
  
• TUCT2 
• Support of the sector directivity (.SDX) introduced with CATT-A v9.1e.
• Suggest number rays has been a decent start for rooms with good
  acoustics but since so many now seem to only use Suggest it is
  now increased by four room and input-data dependent factors.
  
• TUCT1
• Auto number rays changed increased the same way as for TUCT2 
  
• ReflPhinder™ v2.0d *)
• opening also Ambix format files and reading WXYZ also from high order files.
• GratisVolver Pro™ *) standalone update to v2.0d (25-APR-2019)
  

• ReflPhinder™ standalone update to v2.0d (25-APR-2019)
• opening also Ambix format files and reading WXYZ also from high order files.
  
  
• GratisVolver Pro™ standalone update to v2.0d (25-APR-2019)
  

• New distributor Australia (15-NOV-2018)

• CATT-Acoustic™ v9.1d build 1 (6-NOV-2018)
  
  
• CATT-A
• A ceiling loudspeaker array creation tool for voice evacuation
  systems. Based on a desired loudspeaker spacing the tool
  calculates the positioning and displays coverage contours.
  When a staisfactory solution has been found a correponding
  source-file is created.
  
• A more practical extension of the originally limited Directivity
  module  File | New Directivity | Array-format (CTA) in the form
  of template CTA-files that are loaded from a "CATTDATA"\SD\
  CTA-Templates folder and where each file may have dedicated
  help associated.
• Warning for high flat scattering (not physical)
  
• TUCT2 
• Main:Show 3D: Cut z to exclude from viewing planes and edges
  above a selected height
• Addition of the G-80 measure to both Predict SxR and Map
  measures.
• Utilities | SxR Save | Impulse Responses a new option to
  only save source sum IRs
• Direct sound SPL for arrays shown on Predict SxR SPL graphs
  (previously only for single sources)
  
• EDT, T-15, T-20, and RT´ (like with T-30 )shows Sabine and
  Eyring RTs  and RefRT for reference (both are optional)
• Utilities | ?x? Measures | Show Graphs: clearer display with
  many receivers and EDT, T-15, T-20 and RT´ also optionally
  shows Sabine and Eyring RTs and RefRT for reference
• Utilities | ?x? Measures | Show Graphs: optional connecting
  the dots.
  
• Utilities | ?x? T-nn Statistics now has showing Sabine and
  Eyring RT curves optional.
• File | Load Old Results: if a TUCT1 result is selected it will
  optionally load TUCT1 with the CAM or CAP (previously only the
  CAG-file). 
• TUCT1
• File | Load Old Results: if a TUCT2 result is selected it will
  optionally load TUCT2 with the CAM or CAP (previously only the
  CAG-file). 
• ReflPhinder™ v2.0c *)
• GratisVolver Pro™ v2.0c *)

• ReflPhinder™ standalone update to v2.0c (05-NOV-2018)
  
  
• GratisVolver Pro™standalone update to v2.0c (06-SEPT-2018)
   
• A privacy handling section has been added (1-AUG-2018).
  
  
• CATT-Acoustic™ v9.1c build 1 (9-MAY-2018)
  

• CATT-A
• A possibility to get correct auto-edge scattering if an occasional
  plane is unnecessarily divided in sub-planes (such as triangles),
  if it concerns many planes us the plane merge option as before
• A File | Preferences option to use either feet or meter for room
  geometry-related displays

• TUCT2
• Utilities | ?x? Measures | Show Graphs for Meas vs r and Meas
  vs log2(r) also shows the receiver ids at the bottom of the graph.
• The Fast curve drawing option is now only marginally faster so it is
  more a matter of choosing the visually most appropriate display
• A File | Preferences option to use either feet or meter for room
  geometry-related displays and exports (room geometry, source
  and receiver positions, surface areas, room volume, mfp etc.)
  
• Utilities | ?x? T-nn Statistics has mouse max/range scaling
  similar to Show 2D: (Predict SxR Results) Measure / Type. The
  previous option to hold Ctrl to keep the scale with Ref RT on/off
  is no longer needed
  
  
• GratisVolver Pro™ *)
• an enhanced licensed version of the free GratisVolver included with
  CATT-A  v9.1c:1 full version
  

• ReflPhinder v2.0a *)
• Filter has an 5.6 kHz low-pass filter option intended to filter away
  high frequencies that will for most B-format microphones disturb the
  localization
• Balloon at marker Width will change the width with 1 ms instead
  of 0.1 ms if Ctrl is held down when clicking +/-
• File | Open Stereo IR where the IR used for Schröder and
  measures is an L+R mix. L+R, L and R can be viewed and L+R
  and Stereo IRs can be played and convolved with. Results from
  a stereo IR are not be compared with omni mic results but are
  still useful
• With File | Open Mono IR and Open WAV-file Stereo IR the
  lower graph is not used but displays symbolic room graphics with
  a loudspeaker, mono or stereo microphones. At startup before any
  file has been loaded a symbolic B-format microphone setup is
  displayed.
• Faster curve-drawing. Options | Fast Curve Draw on/off will not
  differ much in speed but typically a room impulse will be visually
  clearer with fast curve draw on. 
• Edit | Copy Measures copies calculated measures for all bands
  TAB-delimited for pasting into a spreadsheet. More background
  information added.
• The mic used (B-format W, mono or stereo) is indicated along with
  calculated measures.
  
• All options on the Options menu are saved at exit (previously only
  the Font Sizes)
  
• Forward integrated curve added to the upper display View options
  

• GratisVolver Pro™ an enhanced licensed version of the free GratisVolver .
  
  
• CATT-Acoustic™ v9.1b build 2 (24-JAN-2018)
  

• CATT-A
• An option to use a source-file template when creating a
  new project
  

• TUCT2
• Algorithm 1 has an average/loop option for the echogram (E)
• (Predict SxR Results) Measure / Type has three mouse scaling
  options.
  
  
• ReflPhinder v1.2a (full version)
• Font/size changes restarts and applies the changes.
  
• Longer Linear Phase FIR 1/1-octave bands
• The Filter compensation (FC) on/off option is removed and the
  compensation is always on due to the longer FIRs

• CATT-Acoustic™ v9.1b build 1 (10-MAR-2017 refreshed 30-JUN-2017)

• CATT-Walker™ v2 based on the 3D-viewer, audio processing rewritten
  from scratch and many new options added *)

• CATT-A
• "Lower edge" 1/3-oct air absorption optionally used for the 1/1-oct estimated air absorption for  > 1kHz.
• CTA format adds a show option to the STRINGS block 
• Directivity Index (DI) shown as a graph instead of a table
• A dB-range option (30..60 dB) on the directivity Polar option dialog
  

• TUCT2
• A full implementation for Predict SxR of ISO 3382-3 Spatial decay measures (D2,S etc.) for open plan offices to complement the more flexible option with Map measures. Allows for many recever lines to be evaluated and background noise variation
• ISM shows 1st and 2nd reflection point coordinates after the plane id of the reflection plane. 
• ISM reflection Color option is extended from only a 20 ms step to have 5, 10, 20 or 50 ms step options.
• A non-official full implementation of angle-dependent absorption. Due to the uncertainties of the benefit when only the energy absorption coefficients are known this option is intended for testing to be able to give good recommendations *)
• The former Utilitiy T-30 Statistics can now also give T-15 and T-20 statistics
  
• Shows Sabine and Eyring (and optionally Tref) also on T-15 and T-20 graphs

• MultiVolver WCP v1.0f will after successful processing document the settings and the MVF-file used in a text-file.

• New distributor Greece (16-JUN-2016)
  
  
• CATT-Acoustic™ v9.1a build 1.03 (21-APR-2016)

• Demo maintenance update

• CATT-Acoustic™ v9.1a build 1 (12-FEB-2016)

• TUCT v2 with major additions and support for the new array modeling using the new CTA text format
• ReflPhinder selecton of dialog font type/size and graphics font size (useful for presentations), IR truncation option (full version).
• For just the basic info a bare-bones list of the v9.1 news can be downloaded here (12-FEB-2016).

• GratisVolver™ free software update v1.5a with optional releative IR calibration and dialog and graphics font selection (21-OCT-2015)
  
  
• Distributor Peru (2-MAR-2015)
  
  
• CATT-Acoustic™ v9.0c build 3 (11-FEB-2015)

• Maintenance
• TUCT dialog font type and size selection, useful for presentations
• TUCT graphics font size selection
  
  
• Distributor Brazil (11-JUN-2013)
  
  
• CATT-Acoustic™ v9.0c build 2 (17-APR-2013):
• Maintenance
• Scale and viewing options in Interactive RT estimation making it easier to compare different absorption and/or scattering cases side by
  side (the options are kept across estimations). Sab/Eyr and 8k/16k is optional to display.
• Audience mapping planes do not have to be specified.
  
• Selecting source aim as a receiver position, for example  A0  0  3  2 speaker.SD1 rec(13) where the source will be aimed at receiver 13.

• New distributor USA and Canada (13-DEC-2012)

• CATT-Acoustic™ v9.0c, the second v9 update (22-NOV-2012):
• A comprehensive treatment of early diffraction using a secondary edge-source method based on a discrete Huygens interpretation of Biot-Tolstoy. As a background a 20+ page whitepaper document is included in the documentation and discusses the implementation as well as diffraction in general. The white paper explains why this particular implementation was chosen instead of a screen formula that has many limitations and questionable applicability in room acoustics. The chosen implementation also gives considerably more than a screen formula could such as more correct reflections from small surfaces and also helps modeling concave and convex curved surfaces approximated by facets. 
• Open-plan office measures DL2 and DLf application notes updated with remade examples and the effect of diffraction.
• Enables special tests and investigations using a combination of early sound including diffraction.
• Map measures results have a new Type Spectra were the total SPL 1/1-octave spectrum as well as the SPL 0..10 ms and 0..50 ms are shown for each map point (i.e. similar to the Echograms option).
• Map measures map point coordinate mouse-over display.
• Map points optionally shown with (Audience mapping) / Surfaces
• New mapping palette options.
• Some export additions.
• Utilities menu export of Predict SxR results will export modified STI and U-50 results
• Predict SxR LF is now calculated both for E and h
• Optional grid on Show 2D Plan/Section
• Explicit or auto selection of number of threads to use in processing
• If no direct sound then the Show3D: line  S->R with SxR spheres is dashed green and says "No direct"
• The ISO 3382:3 (Annex B) “Minimum Change in Task Performance” derived from STI has been implemented
• Absolute Predict SxR impulse response displays with variable scales
• AUDABS and AUDABS1 - new indirect options to specify audience planes
• Optional TAB-delimited copy of results from Interactive RT estimation

• CATT-Acoustic™ v9.0b, the first v9 update (2-DEC-2011, small fix 20-DEC-2011):
• A more responsive PC during calculations
• A Lambert 1D scattering function for walls with battens and 1D-diffusers
• A novel and flexible mapping implementation of the DLf  and DL2 measures (ISO 14257) suggested for use also in open-plan offices (draft ISO 3382-3) that allows these measures to be used as design tools where the limitations and pitfalls also can be understood. Comprehensive application notes.
• T-30 statistics for selected source and receiver combinations, useful for understanding room properties
  
• a recline() function for placing receivers in a line (useful for DL2 and DLf)
  
• STI optionally according to IEC 60268-16 4th edition (2011)
  
• Sequence (batch) processing now also in TUCT
  
• Export (to spreadsheet) of a selected set of maps from Audience mapping
• Creation and export of ITU 5-channel impulse responses now also in TUCT, many options ranging from actual mic setups (INA5, OCT, MMA etc.) reflection by reflection to three ways as a post-process from B-format using the patented BPhormer™ process, the Sector mic™ and basic coincident patterns *)
• Export of various mono mic impulse responses (omni, cardioid, supercard, hypercard, fig-of-8) *)
• Graphics copy/save/print options also with minor dialog graphics such as map statistics
• Predict SxR algorithm selection tips on the settings dialog 
• Time Trace "fast forward" skipping over time sements of little interest
• Loudspeaker sensitivity variables that can be used in the source file
• Optional auto-viewing of saved PL9-files in TUCT (useful for saving temporary results for later viewing/export or comparisons)
  
• MultiVolver WCP addition for faster selection of multi-channel WAV input *)
  
  
• Distributor Korea (24-OCT-2011)
  
  
• The Common Loudspeaker File format, CLF2 v2 released (8-SEP-2011):
• CLF2 v2 introduces phase and optional filters for beam-steering and/or cross-overs and multiple files are used to describe an array or a multi-way loudspeaker. 
• As CLF2 v2 files appear CATT software will support the new options. 
• To update your viewer and see CLF2 v2 sample files go to www.clfgroup.org
  
  
• CATT-Acoustic™ v9.0 is relased (5-JUL-2011):
• Major restructuring using new PL9 plot-file graphics and all prediction/auralization is handled by TUCT™
• All v8 projects and libraries can be used
• Updated ActiveAudio StepArray DDI module (Ray-On 100 array)
  
• TUCT™ v1.0g
• Mouse-over echogram display for all map points
• show all wall hits in the Image Source Module
   
  
• CATT-Acoustic™ v8.0k build 2 including TUCT™ v1.0f (4-FEB-2011):
• Mouse-over readout of map values
• Mouse-over readout of Surface rendering SPL values
• If a model with a map is saved as PL9 (see below) the PL9-viewer will give value readout in the same way
• Map auto-scale option
• A new option displays 3D text directly on surfaces (plane ids and sub-division names, plane names and a graph for absorption and scattering properties). 
• Ray leak detection and display (similar to CATT-A v8) 
• Image Source Model indicates plane ids of reflection planes
• Blumlein-stereo IR save option added (full version) *)
• Major enhancement of 2D/3D graphics libraries
• less memory used for model display
• use of a TrueType font for all graphics text giving crisper screen display and better export and printing
• much improved Meta export
• direct saving of Bitmaps (instead of via clipboard copy)
• A new plot-file format PL9 to replace the current PLT format in CATT-Acoustic v9, TUCT v1.0f can export all major windows’ graphics to PL9 (Edit menu). PL9-files can be viewed by the new PL9-viewer.
• Direct printing of all major 2D and 3D windows
• Update of MultiVolver WCP™ (full version) *)
• save/load input WAV-file lists
• Nin x Nout increased to 36x16
• utilizes new graphics text  
• Update of ReflPhinder™ (full version) *)
• utilizes new graphics text and improved exports

• CATT-Acoustic™ v8.0k build 1 including TUCT™ v1.0e, MultiVolver WCP™ and ReflPhinder™ (29-OCT-2010)
  (all new implementations concern TUCT™)
  
• Noise mapping, i.e. use of an SPL map of actual noise sources as background noise for STI and U50
  
• 2nd and 3rd order B-format option and export of IRs *)
• Image Source Model image sources can be saved and will be reloaded the next time the window is opened
  
• MATLAB® .MAT export of all measures
• Release of MultiVolver WCP™ (WAV Convolution Processing) *) (full version)
• an offline version of MultiVolver VST™ with no channel limitation using the same FIR setup-files and a very similar interface
• Release of ReflPhinder™ a B-format (WXYZ) impulse response (IR) analysis and display software *) (full version)
• AVI video export of Time Trace graphics
• All 3D models rotated around the model center (as in 3D-viewer and CATT-Acoustic PLT) rather than the origin
• Optional logging of all info and error messages
• Updated Nexo GEO DDI module (GEO S12 added)
• Updated ActiveAudio StepArray DDI module (SA400P and SA180S added)
  
  
• Release of ReflPhinder™ (standalone version, personal and office license) (29-OCT-2010)
  
  
• The FIReverb Suite™, 5th Edition  (29-OCT-2010)
• Includes MultiVolver WCP™ and MultiVolver VST™
  
  
• A list of some available B-format microphones (15-SEP-2010)
  
  
• New DDI DLL for the Tannoy QFlex column arrays *) (19-AUG-2010)
  
  
• CATT-Acoustic™ v8.0j build 2 including TUCT™ v1.0b (29-JUN-2010)
  (all news concern TUCT™)
  
• Saving/loading named 3D views, global or project specific
• Shortcut to load a new project using the same 3D-view as the current
• Project-based automatic saving of the latest used settings for Predict SxR, Map direct and Map measures
  
• Simpler scrolling through Predict SxR results
• Different internal Predict SxR algorithms are used depending on case, no more memory issues with many receivers and/or long echogram/IRs
• An additional normalized Schroeder plot showing the decay for one band against a backdrop of all bands
• An interactive option to show only the energy echogram response
  
• An STI limit can be specified for STI maps indicating which positions are below the limit
• Optionally suspend update of a big map while changing Max/Range
• Map spreadsheet export with automatic separation into layers that cover eachother in z (such as a balcony above a floor audience)
• Seperate map z-layer displays (show balcony by itself, floor by itself or both)
  
• Time trace includes diffuse reflection as well (it was initially not included since it often creates a too confusing display but has its uses)
  
• Several small useful additions and changes
  
• 
  
• CATT-Acoustic™ v8.0j build 1 including TUCT™ and MultiVolver™ VST (29-MAR-2010)
• TUCT™ is released and included in the v8.0j release. TUCT™ is a new software rewitten nearly form scratch that will replace all prediction and auralization in the current CATT-Acoustic™, see overview.
• MultiVolver™ VST a multi-channel real time convolver VST-plugin made mainly for the general multi-channel VST-host AudioMulch (www.audiomulch.com). The plugin can be used with CATT-Acoustic v8 SIM-files, WAV-files, and MAT-files created by CATT or other software. It also allows for multiple source auralization with different anechoic sound for each source (such as binaural listening to stereo loudspeakers, a 2x2 convolution). *)
• The demo manual restructured as an Introduction manual and included also in purchased versions
• Hidden option to enable using all reported CPUs *)
• Auto edge diffusion reminder/help
• Network use of a common Surface properties library
• A protected SD2 file version for ARRAY0
• New DDI DLL for the Ateïs International Messenger column arrays *)
  
  
• CATT-Acoustic™ v8.0i build 2 (17-DEC-2009)
• shortcut to make half-sphercial SD0/SD1 directivities
• processing of the Listen project public HRTFs for use with CATT-Acoustic (51 sets) *)
• work now concentrates on finalizing TUCT for release.
  
  
• Announcing CATT TUCT™ (21-OCT-2009)
  
  
• CATT-Acoustic™ v8.0i build 1 (21-SEP-2009)
• New Sector directivity model (CATT_Generic DDI) *)
• Some useful WAV-file filters for IR listening *)
• Update of the ActiveAudio DLL (SA180P added) *)
  
  
• Announcing the ReflPhinder™ software employing the patent pending Sector mic™ (previously called Magic mic as a working name) (1-AUG-2009), relased OCT-2010 with CATT-Acoustic v8.0k
  
  
• CATT-Acoustic™ v8.0h build 3 (22-APR-2009)
• Visually enhanced audience 3D mapping
• A handy way to load a PLT-file in the external viewer for comparions
• Refinements to the multi-core processing
• Geometry debug speedup for complex models
• Some 3D geometry viewing speedup
• optional Direct to Reverberant Ratio (note that many of the previous measures already give more useful info)
• Mouseover value readout on SIM- and CWI-file info impulse response, frequency response and spectrogram graphs
• Hidden option to show T20 instead of T15 *)
  
  
• GratisVolver™ free software update v1.4b minor fix (25-MAR-2009)
  
  
• Distributor Poland (2-JAN-2009)
  
  
• CATT-Acoustic™ v8.0h build 2 (19-DEC-2008)
• Time trace ray segment coloring also according to reflection order
• A way to select audience planes based on surface material
• Variable suppression of continius shading when using the internal 3D viewing (makes handling of complex 3D PLT-files faster)
  
  
• GratisVolver™ free software update v1.4a with 4-channel convolution, typically B-format IRs (1-OCT-2008)
  
  
• CATT-Acoustic™ v8.0h (25-SEP-2008)
• Full detailed calculation and Audience area mapping utilizes multi-core CPUs. Example: prediction for a complex model can be up to twice as fast on a dual-core CPU and up to four times as fast on a quad-core.
• A new prediction display called Time trace, a wavefront-like display with many options
• Better memory-handling for big plot-files.
  
  
• The FIReverb Suite™, 4th Edition minor update (25-SEP-2008)
• PureVerb™ offers Gang buttons for room size (changing all room dimensions simultaneously) and Directivity Index.
  
  
• CATT-Acoustic™ v8.0g build 4 (23-APR-2008)
• Faster animation echogram drawing
• ISM history ray bundle plot (shows all rays at the same time)
• Source addition overall SPL eq change (useful for optimizing IEC STI that has level dependent masking)
• New DDI module for d&b audio J-series line arrays *)
• Faster SIM/CWI-file info IR drawing option
• CATT-Walker has a direct B-format output option (requires a 4-channel capable soundcard to be installed and selected and an ambisonic decoder to be used externally) *)
  
  
• List of available measurement software updated (4-APR-2008)
  
  
• A list of some available measurement software (2-APR-2008)
  
  
• The CLF software is updated with new display options: www.clfgroup.org (12-DEC-2007)
  
  
• CATT-Acoustic™ v8.0g build 3.02 (11-DEC-2007)
  
  
• CATT-Acoustic™ v8.0g build 3 (6-DEC-2007)
• New DDI module for Renkus-Heinz Iconyx line arrays *)
• Updated DDI module for ActiveAudio StepArray (new SA250S model and new steering parameters) *)
• Interactive RT estimate speedup
  
  
• CATT-Acoustic™ v8.0g build 2 (18-SEP-2007)
• A new 300 pages printed (and PDF) manual  *)
• merging of planes e.g. after an AutoCAD interface export or DXF with 3DFACEs
• PLINFO.PLT shows GEO-file name and line number for each plane
• new GEO-file functions: ABS(x), SQR(x) and CUBE(x), i.e. |x|, x^2 and x^3
• Updated DDI DLL for PanBeam arrays (PB32 and PB40 added) *)
• Option to run several independent sequence-processing files in batch *)
• DXF2GEO adds an extra coordinate decimal in the export
  
  
• New DDI DLL for the PanBeam column arrays (11-JUL-2007) *)
  
  
• GratisWavPlayer™ free software, update v1.0b (5-JUL-2007)
  
  
• The Common Loudspeaker file Format (CLF) software update (5-JUL-2007)
  
  
• CATT-Acoustic™ v8.0g (18-MAY-2007)
• General:
• reworked, improved and harmonized helpfiles using Compiled HTML Help (CHM), Windows Vista has no longer direct support fo the HLP format.
• separation of program and data folders (harmonizing with Windows Vista requirements)
• Modeling:
• optional ELSE in IF-statements
• exp10() and log10() added to math functions
• the AutoCAD AutoLISP interface is updated to meet with Windows Vista requirements and the SRC command creates the SOURCEDEFS syntax.
• Prediction:
• source level voice shortcuts for IEC STI (Lp_voice_IECmale and Lp_voice_IECfemale) available in the CATT-Edit Template|Source menu
• new handling of calibrated SD2 arrays (DLL Directivity Interface)
• optional full MATLAB result output from Full detailed calculation *)
• Internal and standalone PLT-viewers:
• direct mouse selection of shaded plot-frames (planes in PLINFO.PLT)
• optional autoload of a PLT-file in the stand-alone viewer (for simpler client presentations)
• isometric view shortcut (pressing "I" in parralel perspective)
• 3D-viewer:
• mouse selection of planes and plane sub-divisions with data read-out
• mouse selection of plane-sets for pasting into plane-use dialogs (e.g. audience planes)
• optional autoload of an OGL-file (for simpler client presentations)
• Directivity:
• optional color-shaded directivity balloons
• 2º balloon option for SD2 arrays
• A scripting interface:
• MATLAB, EXE or script interface allowing for optimization of room geometry or data in a Sequence processing REPEAT loop
• Post-processing:
• Spectrogram option with SIM- and CWI-file info, many time and frequency resolution options
• IR display dB option with SIM- and CWI-file info
• toolbar button access to common Info menus
  
  
• The FIReverb Suite™, 4th Edition (18-MAY-2007)
• PureVerb™ creates a new PureVerb eXtended (PVX) file format. PVX is a single-file, multi-input, multi-output, multi-microphone impulse response format that also stores a PureVerb settings-file. A PVX-file can be loaded by File|Open for examining the parameters used when creating the impulse responses, or to re-calculate the same basic responses after some changes in parameters. The PVX-format simplifies use of PureVerb responses in MultiVolver™ since only one file needs to selected for a complete set of filters.
• the new PvxViewer shows the contents of a PVX-file, impulse responses, octave-band filtered impulse responses and decays.
• PureVerb and MultiVolver optionally creates WAV-files in WAVE-EX format.
  
  
• CATT-Acoustic™ v8.0f Build 2 (14-DEC-2006)
• mainly a maintenace release
• ABS1 option to give absorption and scattering coeffcients in the range 0..1 instead of in %
  
  
• New DDI DLL for ActiveAudio StepArray line arrays (14-DEC-2006). *)
  
  
• CATT-Acoustic™ v8.0f (25-OCT-2006)
• optional use of XP interface 
• max number of planes raised, limit essentially removed
• optional noise map with STI amd RASTI mapping where some sources are defined as noise sources
• optional individual receiver noise for STI and RASTI in Full detailed calculation
• new GETGLOBAL/GETLOCAL options with info-text and limit checks
• Schröder frequency estimate
• estimate of a limit for geometrical acoustics (based on the Schröder frequency)
• Nexo Geo D arrays implemented in the Nexo DDI module *)
• optional 3rd order B-format impulse responses *)
  
  
• GratisWavPlayer free software (v1.0a, 25-OCT-2006)
  
  
• IOA Copenhagen 2006 paper and presentation about CATT-Walker™ for download  (28-JUN-2006)
  
  
• CATT-Acoustic™ v8.0e build 3 (21-JUN-2006)
• audience area mapping speed-up option (2-20x, case dependent gain typical 3-4x) 
• optional source ray factor with audience area mapping to allow less rays for simpler sources (such as fill sources) while still use many rays for main sources. Together with the map speedup option large multi sources cases can be calculate in much shorter times.
• option to display only the mapped audience surfaces (useful to get a more readable map if the audience surface is much smaller than the room plan)  *)
• averages calculated in audience are mapping statistics, for STI, RASTI and SPL also the standard deviation is shown
• optional list export of all maps to spreadsheet format
• DXF2GEO, the DXF converter is now included (also in the demo, see File|External CATT Tools)
• NCB noise ratings shown when selecting background noise level for STI etc.
• background noise level displayed in echograms (according to ANSI S12.2-1995)
• optional curves displayed on echograms to help identify potentially detrimental early reflections in e.g. cinemas (based on a Floyd Toole AES paper) *)
• optional  calculation of U50, AI, PI, SII *)
• EDT calculated also for multiple source addition echograms
• IACC included in optional binaural post-processing MATLAB output  *)
• CATT-Edit includes a source syntax template
• Lp_sensitivity shortcut for Lp1m_a values in source file
  
  
• CATT-Acoustic™ v8.0e (20-JAN-2006):
• separate direct sound and direct+reflected soiund audience area mapping
• 3D rotatable audience area maps
• color coded closest source group audience area  map
• pixel rendering also/only on fictive audience area surfaces as in mapping
• external CATT tools menu
• the "Stage support" measure
• spectra plots for single and multiple sources
• 3D room aim view in mutiple sources addition
• new PLT-viewer shortcuts for viewing along X, Y or Z axis
• WalkDecim, a walkthrough convolver path tool. *) 
  
  
• CATT-Acoustic™ v8.0d build 3 (20-OCT-2005):
• multiple PA source real time walkthrough visualization / binaural auralization via the CATT-Walker™ module. *) 
• DXF export *)
• complex source speedup
• STI according to IEC 60286-16 2003-05 (updated from IEC 60286-16 1998-03)
  
  
• Fogg Art Museum Lecture Room : A calibrated recreation of the birthplace of Room Acoustics
• A Forum Acusticum Budapest 2005 paper with auralizations of this famous auditorium
• Further details (links to the paper and models for download)
  
  
• CATT-Acoustic™ v8.0d build 2 (30-JUN-2005):
• unique real time walkthrough visualization / binaural auralization via the new CATT-Walker™ module. *) 
• a new receiver file function recwalk() that simplifies receiver placements for CATT-Walker
  
  
• CATT-Acoustic™ v8.0d (27-MAY-2005):
• support for the CLF (in demo only for viewing), see www.clfgroup.org 
• export of geometry to CLF cabinet format (useful for CLF authors)
• balloon plot All option (plots balloons for all bands in one plot-file)
• receiver OVERRIDE option
• negative increments allowed in plane loops
• improved multi-tasking
  
  
• The Common Loudspeaker file Format (CLF) is released (15-APR-2005)
• an initiative from four prediction sofware developers and two companies involved in audio education and loudspeaker data measurements
• the CLF format will be supported by CATT-Acoustic
• go to the dedicated CLF web site: www.clfgroup.org for a background and download a free viewer or a trial authoring kit
  
  
• CATT-Acoustic™ v8.0c build 7 (22-MAR-2005):
• interactive RT estimate using global ray-tracing
• pixel rendering "quick render"
• SPL map statistics range in Prefs
• finer RASTI/STI map statistics ranges *)
• map statistics spreadsheet file
• initial balloon view angles in Prefs
• walkthrough convolver improvement *) 
• convolver plays impulse response
• convolver dialog auto fill-in
• WAV IR convolver plays impulse response *)
• SIM-file info dialog plays impulse response *)
• plot-file list export
  
  
• GratisVolver™ free software (v1.2a, 17-MAR-2005)
  
  
• CATT-Acoustic™ v8.0c build 6 (03-JAN-2005), *) not available in demo version:
• geometry debug additions 
• free form plane id dialog editing 
• interactive Sabine additions
• plane loops
• double-sided planes speed-up
• ranges in plane definitions
• scattering coefficient auto-estimate
• smoothed audience area maps
• EKgrad graphs for multiple sources
• plot file viewer additions
• enhanced SIM-file information with impulse and frequency response plots
• optional direct impulse response WAV output *) 
• general purpose WAV IR convolver *) 
  
  
• More FIReverb Suite audio samples (23-JUL-2004).
  
  
• CATT-Acoustic™ v8.0c build 4 (14-JUL-2004) 
• STI according to IEC 60286-16 1998-03
• Relative input and output folders
• Template settings-files for prediction and post-processing
• GEO format additions: EXCLUDE can take ranges, NOHIDELINES, lock() in loops 
  
  
• More FIReverb Suite audio sample production CD with before/after examples (01-APR-2004).
  
  
• Geo T is added to the DDI DLL for Nexo GEO line arrays (01-APR-2004)
  
  
• New DDI DLL for Outline Butterfly line arrays (01-APR-2004). This is the first DLL based on the new sub-DLL concept that dramatically simplifies dedicated array modeling while at the same time offers intellectual property hiding.
  
  
• CATT-Acoustic™ v8.0c (17-MAR-04) 
• Direct and reflected sound pixel rendering
• EKgrad echo disturbance calculation
• arbitrary resolution HRTFs
• Duran Intellivox DDI updates (optional absolute calibration)  

What's cooking?

• v9.1f was planned for release April 2020 including support for a new CLF-like format called the
  Common Instrument Format (CIF) for natural sources, also created and handled by the www.clfgroup.org.
  Due to the pandemic and related issues the release had to be post-pone to Oct 30 2020.
  
• v9.1e was released April 2019 a new Sector type of directivity and new Suggest options  
• v9.1d was released Nov 2018 including a ceiling loudspeaker array tool and a CTA/array modeling templates
• v9.1c was released April 2018 including an updated ReflPhinder and the new GratisVolver Pro
  
• v9.1b was released March 2017 including a totally new CATT-Walker.
  
• v9.1a with TUCT v2 was released Feb 2016, see overview of the many v9.1 additions.
  

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