Smaart has an automatic delay finder that calculates delay, even while you are moving the mic around the room. To maintain accuracy, there must be compensation for the delay. This comparison involves a delay between the two signals (the Reference signal does not travel through the air, and therefore reaches Smaart faster).
A measurement mic picked was connected to the Measurement channel. This was measured by generating pink noise (from Smaart's signal generator), splitting it and sending it directly into Smaart on the Reference channel and also to the monitors. An example is shown in figure 4, the Transfer Function of a monitor system in a small control room. Smaart's Transfer Function allows comparison between a reference signal and the post-process version of that signal in an audio system, measurements which reveal interesting traits. It's a very useful tool, especially in venues where the neighbors make noise complaints. A "logging" feature creates a text file of these measurements showing minimum and maximum SPL as well as the actual SPL at a given date and time. dBLEQ is capable of long-term SPL monitoring over a user-defined period (we went as far as six hours), with user-defined increments. To select an area of a window for zoom, right-click and drag on it or, on a one-button mouse, hold + and click and drag.Īt the top of the Control Strip is a numeric indicator that shows dBFS, dB SPL (Smaart provides calibration for SPL) or dBLEQ. All of the screens look great and are easy to read, but one thing I did not like is that when you zoom in or out, the scale of the screen changes, but the resolution of the grid does not (i.e., you can zoom in as far as you want, but the grid is still divided into 6 dB steps). The Spectrum display can show RTA, Spectrograph or both via split screen (figure 3). Note that the Control Strip on the right (detailed in figure 2) displays the averaging but not the weighting, which I consider essential. Figure 1 shows the Smaart Spectrum (RTA) function. One of the few gripes I have with Smaart is that weighting is neither displayed nor accessible from the Control Strip, though it is indicated in the trace area. four windows of RTA, each displaying a channel). It'd be nice if you could tile the screen into separate windows for each trace (e.g. Active channels are viewed "overlay" style clicking on an input in the Control Strip brings its trace to the front of a window. Version 7.1 is the first to support multiple channels, enabling simultaneous measurement of, for example, console output, a mic at FOH, another mic in the balcony, etc. Inputs are organized and added into Groups under the Group Manager, where you'll find parameters including averaging and weighting. Sometimes Smaart would recognize the Traveler, and other times – typically after changing the sample rate – it would not. I cannot say the same for my MOTU Traveler, which Smaart did not like very much. Smaart played very well with my Digi 002R at sample rates of 44.1-, 48- and 96 kHz, though it does not support 88.2 kHz (which I don't see as a problem). You can then set sample rate, bit-depth (16 or 24) and apply your own names to the inputs and outputs (nice for managing multi-channel systems). When Smaart recognizes your interface, it appears on a menu of available I/Os. Smaart's primary modes (Real Time and Impulse Response) include time and frequency domain measurements, but first you need to set up your hardware in the audio dialogue. A major change is that this version supports simultaneous measurement of multiple channels. Rational Acoustics incorporated many improvements to the interface of Smaart v7.1, including a "Capture All" command that stores all active measurement traces and an improved trace filing system. Reading these documents while following along with your system can cut down the learning curve, and since there's a lot to learn about Smaart, this idea is… well… smart. If you've never used Smaart, it's worthwhile reviewing the resources available from the Rational Acoustics web site, particularly the PowerPoint presentation and basic setup guide. I ran Smaart on a MacBook 2 GHz Core 2 Duo/4 GB RAM with Digi 002R and MOTU Traveler interfaces. Rational Acoustics recommends at least a 2 GHz dual-core processor and Smaart is compatible with CoreAudio, WAV or ASIO audio drivers.
#SMAART 7 WINDOWS 10 MAC OSX#
The latest revision of Rational Acoustics' Smaart is v7.1 which runs under Mac OSX (10.5 or 10.6) as well as Windows 7, XP, or Vista.
#SMAART 7 WINDOWS 10 SOFTWARE#
Editor's Note: Steve submitted this as his regular "On the Digital Edge" column for the January issue of FOH but, as it is a pretty extensive look at the nuts and bolts of a much-used software program, we are running it as a Road Test instead.
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