We are excited to announce the release of Smaart v8.5. This FREE update includes an extensive overhaul of Impulse Response Mode as well as a new “Advanced Delay Finder” dialog, new features and improvements to SPL and Transfer Function measurements, and various bug and crash fixes.  This is a major update and is recommended for all Smaart v8 users.


The primary focus of the Impulse Response Mode overhaul in v8.5 is to allow for measuring, viewing, and manipulating multiple IR measurements simultaneously.  In previous versions, only one IR measurement could be managed at a time. The user experience in the new v8.5 IR Mode is now similar, in many ways, to the existing Real Time Mode, making it extremely easy to capture and analyze multiple Impulse Responses.  Other improvements to the IR Mode include new IR Data Bar, IR Plot Legend, IR Spectrograph controls and improved Speech Transmission Index (STI) calculation dialog.

SPL measurement improvements include the ability to create SPL log file summary reports in color pdf format and the option to automatically open an email client and attach the SPL report upon generation. Additions and improvements to alarm levels and indicators as well as logging and Leq measurement options have also been included.

The new Advanced Delay Finder dialog is a modeless window that contains more advanced filtering and analysis capabilities than the prior versions, allowing for octave-filtered delay measurements with user-adjustable center frequencies.

Also of note are new features to support the M-Noise™ Procedure — currently under AES Standards development — for measuring loudspeaker maximum linear sound levels, including MTW+, a supercharged version of the MTW (Multi Time Window) Transfer Function process which eliminates high frequency data gaps in the current MTW calculation pipeline, an unweighted Peak sound level metric, as well as support for importing Meyer Sound SIM® 3 project (.bin) files via the “Import ASCII” dialog

The “What’s new in Smaart v8.5” video, available via the Rational Acoustics YouTube and Vimeo channels, provides an overview of key new feature additions and updates.


For a complete list of the new and improved features in Smaart v8.5 (including bug fixes) as well as instructions for updating, users can consult the  Smaart v8.5 Release Overview, available in the Support section of the Rational Acoustics website. Smaart v8.5’s internal Help Files have also been updated with a full revision history, detailed function descriptions, and a listing of all accelerator (hot) keys.