Rational Acoustics SMAART RT


Smaart RT is a stand-alone version of the Real-Time Mode interface of Smaart Suite. RT includes all of the Real-Time mode features in Smaart Suite with no limitations or changes to the FFT-based measurement functionality. Any limitations in RT apply to IR measurement (there is no IR Mode), and SPL Measurement (there is no SPL…


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Rational Acoustics SMAART RT

Smaart RT is a stand-alone version of the Real-Time Mode interface of Smaart Suite. RT includes all of the Real-Time mode features in Smaart Suite with no limitations or changes to the FFT-based measurement functionality. Any limitations in RT apply to IR measurement (there is no IR Mode), and SPL Measurement (there is no SPL Mode).

Real-Time Mode

For a majority of Smaart users, Real-Time mode is what makes Smaart smart. The single channel Spectrum, and dual channel Transfer Function measurements are essential tools for professional sound engineers all around the world. Real-Time Mode is specifically designed for sound system engineers to be able to accomplish their alignment and optimization work quickly, efficiently, and effectively.

SPL Limitations

Smaart RT allows for the calibration of any and all inputs for SPL, and calibrated spectrum measurement. RT offers a single, read-only, SPL meter in the main interface for viewing common SPL values without all of the advanced SPL modes features like logging, reporting, alarms, etc.

Smaart RT vs Smaart LE

Both Smaart RT and Smaart LE offer the same multi-input, multi-output, multi-measurement capability. Where they differ is in the depth of settings and advanced user functions. RT is the exact same RT mode as Smaart Suite. LE is a stripped-down version of RT.

Key Features


  • Unlimited simultaneous RTA measurements and live average of RTA data
  • Fractional-Octave banding up to 1/48th octave resolution
  • Fractional Octave or Line view of RTA data
  • View data as banded, lines, or both simultaneously
  • View Peak Holds, Target Curve (including cinema X-curves), and THD
  • Accurately display SPL levels per 1 and 1/3 octave bands with calibrated inputs
  • A, C, X, and Inverse weighting options for live and stored data
  • Fast, Slow, & Infinite data averaging selections, plus “none”


  • Spectrum-over-time with amplitude represented by color
  • User-definable dynamic range
  • Scrollable line history
  • Adjustable slice height resolution
  • Full color or greyscale

Real-Time Mode: Transfer Function (dual channel)

  • Magnitude, Coherence, Phase, Live Impulse Response (Live IR) graphs
  • Unlimited simultaneous TF measurement and live average of TF engines
  • MTW and single-size FFT data acquisition from 128-128K
  • Up to 1/48th oct smoothing for magnitude and phase graphs
  • Reference delay finder with frequency filtering
  • Automatic reference delay tracking
  • Progressive averaging selections of 1-10, plus infinite.
  • A, C, X, and Inverse weighting options for live and stored data
  • Supports AES-75

SPL (Sound Pressure Level)

  • View 1 SPL metric at a time
  • SPL A, C, & Unweighted Fast and Slow
  • Peak C, Peak Z (unweighted)
  • 1 user-definable Leq metric (A, C, Z, time integration from 1sec-24 hours)
  • User-definable ‘traffic light’ meter display colors
  • Read Only

Signal Generator

  • Multi-output; mono, multi-mono, stereo
  • Independent output trim
  • 10 programmable output presets
  • Random, Pseudorandom, SMPTE, and speech-weighted noise
  • Sine, Sweep, and File playback (.WAV .AIFF)
  • Optional noise fade-in

Data Acquisition

  • Unlimited simultaneous input and output channels
  • ASIO, Wav, and CoreAudio driver support
  • Input calibration for SPL
  • Integrated gain and phantom power control with gain tracking for the Roland OctaCapture

System Requirements

The minimum system requirements for the Smaart v9 platform have changed from Smaart v8. Please read the requirements below carefully to ensure v9 is compatible with your system.

Minimum Req.Windows macOS
OS VersionWindows 10 (64-bit only)macOS 10.13 (High Sierra)
Processor / CPU6th gen Intel Core i5 or similar/newer*6th gen Intel Core i5 or similar/newer (2015 or newer)
Any Apple Silicon M series
Memory / RAM4GB4GB
GraphicsHardware supporting DirectX 12**Any
Display1024 x 7681024 x 768
SoundASIO® or WAV/WDM driversCore Audio drivers

Note: Minimum requirements are established to ensure reasonable performance when default settings are used. Consider a more powerful computer if you plan to use large FFT sizes, or run many measurements at the same time.

*Smaart does not support “Windows on ARM”

**Must support Feature Level 12 / WDDM 2.0+

Licensing Information: Perpetual + Upgrade

A Perpetual License does not expire.  A Perpetual License is billed in full for the cost of the license at the time of purchase and remains valid indefinitely for the specific edition and version of the software you are licensed for.

Perpetual Licenses are delivered via email and must be registered to a Smaart License Management Account (either new or existing) in order to access the installers for your license.

A Perpetual License is refundable within 30 days of purchase as long as it has not been registered to Smaart License Management account or installed on a computer. Once it has been registered and installed, it is non-returnable and non-refundable.

Perpetual licenses of Smaart Suite and Smaart RT come with 2 installation seats and perpetual licenses of Smaart LE and Smaart SPL come with 1 seat. Once a license has been registered, you can purchase additional seats for it through your Smaart License Management Account.

Perpetual Licenses can be upgraded to different editions of Smaart within the same version cycle (i.e. upgrading from Smaart RT v9 to Smaart Suite v9), and to subsequent versions upon their release (i.e. upgrading from Smaart Suite v9 to Smaart Suite v10). You do not lose your previous license when you upgrade.

An internet connection is required for the initial activation of a Perpetual License and for receiving updates. Once activated, Smaart perpetual licenses can be operated offline.

Support, including updates and bug fixes, is provided at no cost for the duration of the license as long as the version of Smaart you are licensed for is the most current release.

Licensing Information: Subscription

An Annual Subscription License starts on the day payment is received and continues for a period of one year. Annual Subscription Licenses are billed in full for the entire year at the beginning of the subscription period. Auto-renew is automatically selected as the default setting for the subscription and at the end of the subscription period, you will automatically be billed for an additional one-year subscription at then-current pricing.

Annual Subscription Licenses are 1-install only and additional installs cannot be purchased for, or added to, Subscription Licenses. If you wish to run Smaart on more than one computer, you will need to purchase a separate Annual Subscription License for each computer.

Annual Subscription Licenses require a periodic internet connection for license validation and renewal.  If the computer on which your software is running is not connected to the internet at least once per month, your software may cease to function.

You can cancel your subscription from within your Smaart License Management account any time up to 24 hours prior to the end of the current subscription period and you will not be billed for future subscription periods. You will not receive a refund for any portion of the fees paid for the current subscription period unless legally required.  See our Cancellation & Refund Policy for further details.

If you cancel your subscription, your Annual Subscription License will remain active, and you will be able to use Smaart, until the end of the current subscription period. Once the subscription period has ended, your Annual Subscription License will expire and Smaart will cease to function.  If you wish to continue using Smaart, you will need to purchase a new Subscription License.


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