CATT-Acoustic v9.0

 Auralization

• TUCT™, the prediction/aurlization core of CATT-Acoustic™, directly performs auralization after completed prediction, just click Play/Convolve, see TUCT overview
  
• CATT-Walker™ real time walkthrough visualization and auralization:
• IOA Copenhagen 2006 paper and presentation download
   

  sample CATT-Walker™ screen

• multiple source walkthrough visualization (all sources using the same anechoic input - typically for PA systems)
  
• optional use as an "acoustics engine" together with separate VR real time graphics (via e.g. TCP/IP using the Walker Steer SDK, available separatelly for full version users).
• binaural output for headphones
  
• B-format output (requires a 4-channel capable soundcard to be installed and selected and an ambisonic decoder to be used externally or via e.g. Virtual Audio Cable (VAC) that creates a virtual sound card making it possible to feed the B-format output of Walker to another application on the same PC (e.g. a VST host) with an Ambisonic decoder plugin)
  
• HRTFs may have arbitrary resolution
• Several HRTF sets provided
• a person's HRTFs
• ITA-Kunstkopf
  
• KEMAR artificial head measured by Bill Gardner and Keith Martin
• the Listen project public HRTF (51 sets)
  
• analytical sphere HRTFs
• open interface for use entry of HRTFs at a basic resolution, other resolutions from case to case.
  
• IACC calculation for binaural responses (Inter-Aural Correlation Coefficient) 
• direct multiple source auralization using the same anechoic source (typically for PA systems) or using different anechoic sources (e.g. auralization of stereo speakers, background noise + speech etc.)
• loudspeaker replay of simulated or recorded binaural sound via loudspeakers using cross-talk cancellation filters. General implementation where loudspeaker positions are selected and with optional individual loudspeaker correction. Many options for creating the cross-talk filters.
• CD with anechoically recorded source material included with full versions
• Some useful WAV-file filters for IR listening
  
• optional direct impulse response output to 16-bit WAV, 32-bit WAV, MATLAB and Lake SIM formats as: 
• binaural
  
• 5-channel (C L R Ls Rs), many options
• B-format (1st, 2nd or 3rd order)
• XY-stereo
• Blumlein stereo
• mono mics (omni, cardioid, supercard, hypercard, fig-of-8)
  
• file-conversion utilities (MATLAB .MAT, MLSSA .TIM, .WAV, Lake .SIM,...)
• general and secure handling of HRTF libraries and headphone equalization filters enables licensing of HRTF libraries and headphone filters from various sources. Headphone equalization and HRTFs in user Preferences
• software convolution: 
• at real-time speed of anechoic music/speech with synthesized impulse responses, direct listening to impulse responses
• at real-time speed with 16-, 24- or 32-bit impulse responses in WAV-format (e.g. measured impulse responses), direct listening to impulse responses. See also the free GratisVolver™.
• for walkthrough including fast head rotations for synchronization to graphics walkthrough from e.g. 3ds max. Walkthrough can be created as binaural, cross-talk cancelled binaural, 5-channel or B-format (for Ambisonic). Included is a tool WalkDecim that converts a camera path exported from a 3D rendering software to a receivcer list and a walkthrough convolver script.
• can also be performed using the CATT MultiVolver VST or WCP.
• WAV-file player with single-file, A/B and play-list functions
• full version users are automatically also licenced for The FIReverb Suite™ and ReflPhinder™