DDA (Digital Directivity Analysis) v5.1 (License free)

Last Updated: 20 de abr

What is DDA?

DDA is a powerful yet intuitive Windows application for accurately predicting the electro-acoustic performance of loudspeaker systems in (semi) open or closed spaces. It includes 3D room acoustic modelling, direct sound simulation as well as statistical prediction of various acoustic parameters.

DDA supports all JBL point source loudspeakers with CLF data and all JBL Intellivox products.

Intellivox makes use of JBL's advanced beam shaping (DDS) technologies. From DDA the radiation pattern of JBL Intellivox loudspeaker arrays can be controlled precisely and tailored to the shape and the acoustics of the space. In addition, DDA offers various design tools which reduce design time and help the sound designer to optimise the system performance. For installation and commissioning purposes DDA also generates FIR output filters which can be uploaded to supported DDS-controlled loudspeaker arrays using the JBL WinControl software.

Overview of the functionality:

  • 3D geometric models can be built in DDA using:
    • Built-in interactive 2D geometry builder
    • Import geometry from SketchUp (requires Plug-in)
    • Import geometry from Catt Acoustic, Odeon or EASE
  • DDA supports a wide variety of JBL Loudspeakers
    • All JBL Intellivox loudspeakers
    • All point source JBL loudspeakers described by a CLF file
  • DDA includes design tools such as:
    • Statistical room acoustic modelling including:
      • Direct SPL
      • Total SPL
      • D/R
      • STI
      • Delay Spread
    • Export of directivity data usage in Catt Acoustic, Odeon or EASE
    • Export/copy graphics to various formats

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