V8.2 / December 20, 2017 ( 2017-12-20) or newer, or newer Acoustical measurement Website Smaart is a suite of audio and software tools. Introduced in 1996 by 's division, it was designed to help the optimize during the public performance unlike most earlier analysis systems which required specific test signals sent to the sound system, ones which would be unpleasant for the audience to hear. It is also intended to assist in analyzing the output of, and other audio gear, as well as helping the acoustician analyze. The product has been known as JBL-Smaart, SIA-Smaart Pro, EAW Smaart, SmaartLive, and simply Smaart. An acoustician version has been offered as Smaart Acoustic Tools. Smaart is an which stands for sound measurement acoustical analysis real time.

1. Smaartlive5.4

Smaart has three modes: transfer function, real-time analyzer (RTA) and. The first two modes use dual- and single- (FFT), and the impulse response mode uses either FFT or (MLS) analysis.

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Smaart has been licensed and owned by several companies since JBL, and is now owned and developed by Rational Acoustics. First written as a native application to work within on, in 2006 a version was introduced that was compatible on both Windows and operating systems. In March 2016 Smaart was in its 8th version. Contents. Use Smaart is based on real-time (FFT) analysis, including dual-FFT comparison, called 'transfer function', and single-FFT.

It includes (MLS) analysis as a choice for impulse response, for the measurement of room acoustics. The FFT implementation of Smaart is a multi-time window (MTW) solution in which the FFT, rather than being a fixed length, is made increasingly shorter as the frequency increases.

This feature allows the software to 'ignore' later signal reflections from walls and other surfaces, increasing in coherence as the audio frequency increases. The latest version of Smaart 8 runs under Windows 7 or newer, and Mac OSX 10.7 or newer, including 32- and 64-bit versions. A computer having a with a of at least 2 GHz is recommended. Smaart can be set to sample rates of 44.1 kHz, 48 kHz or 96 kHz, and to bit depths of 16 or 24. The software works with computer audio protocols, or audio drivers.

Transfer function. SmaartLive version 4 in transfer function mode, showing several captured traces of an Smaart's transfer function requires a stereo input to the computer because it analyzes two channels of audio signal.

Using its dual-FFT mode, Smaart compares one channel with the other to show the difference. This is used by live sound engineers to set up concert sound systems before a show and to monitor and adjust these systems during the performance. The first channel of audio undergoing analysis is connected directly from one of the main outputs of the and the second channel is connected to a placed in the audience listening area, usually an omnidirectional test microphone with a flat, neutral pickup characteristic.

The direct mixing console audio output is compared with the microphone input to determine how the sound is changed by the sound system elements such as loudspeakers and amplifiers, and by the room acoustics indoors or by the weather conditions and acoustic environment outdoors. Smaart displays the difference between the intended sound from the mixer and the received sound at the microphone, and this real-time display informs the audio engineer's decisions regarding, and other sound system adjustment parameters. Before the audience arrives, random or pseudo-random noise is used as a stimulus signal, usually. Such noise signals provide equal energy at each octave of the audio frequency range that the sound system can reproduce, unlike a stimulus signal of music or speech which emphasizes some frequencies over others.

Once the audience enters the performance venue, the main output of the mixing console is substituted as the stimulus signal. Transfer mode can also be used to examine the of audio equipment, including individual amplifiers, loudspeakers and such as and equalizers. It can be used to compare a known neutral-response test microphone with another microphone in order to better understand its frequency response and, by changing the angle of the microphone under test, its polar response. Transfer mode can be used to adjust audio crossover settings for multi-way loudspeakers; similarly, it can be used to adjust only the -to-top box crossover characteristics in a sound system where the main, non-subwoofer loudspeakers are but the subwoofers are placed on the ground.

One of the traces in the Smaart display shows. To properly align adjacent frequency bands through a crossover, the two phase responses should be adjusted until they are seen in Smaart to be parallel through the crossover frequency. The transfer mode can be used to measure frequency-related, one of the.

Sound system engineer worked out the method in 2000, using Smaart to compare the voltage drop through a simple between a loudspeaker and a random noise generator. Smaart running as a, in spectrograph mode In Spectrograph mode, Smaart displays a real-time spectrum analysis, showing the relative strength of audio frequencies for one audio signal. Needing only one channel of audio input, this capability can be used for a variety of purposes. With Smaart's input connected to the mixing console's (PFL) or cue bus, Spectrograph mode can display the of individual channels, several selected channels, or various mixes. Spectrograph mode can be used to display room resonances: pink noise is applied to the room's sound system, and the signal from a test microphone in the room is displayed on Smaart. When the pink noise is muted, the display shows the lingering tails of noise frequencies that are resonating.

Impulse response Smaart can be used to find the delay time between two signals, in which case the computer needs two input channels and the software uses dual-FFT mode. Called 'Delay Locator', the software calculates the impulse responses of two continuous audio signals, finding the similarities in the signals and measuring how much time has elapsed between them. This is used to set delay times for delay towers at large outdoor sound systems, and it is used to set delay times for other loudspeaker zones in smaller systems. Veteran touring sound engineer Jim Yakabuski calls such delay locator programs as Smaart a 'must have' item, useful for quickly aligning sound system elements when setup time is limited. Market Smaart is primarily aimed at sound system operators to assist them in setting up and tuning sound systems.

Other users include audio equipment designers and architectural acousticians. Author and sound engineer wrote in 2007 that because of Smaart's widespread acceptance at all levels of live sound mixing, the paradigm has reversed from the 1980s one of surprise at finding scientific tools in the concert sound scene to one of surprise if the observer finds that such tools are not being used to tune a sound system. Smaart has been compared to other software-based sound system measurement tools such as SIM by and IASYS by Audio Control, both of which offer delay finder tools. Smaart has been described as 'a newer, slimmer and much cheaper—but not necessarily better—version of the Meyer SIM system.' , developed by DRA Laboratories in 1987, and TEF, a time delay spectrometry product by Gold Line, are other products predating Smaart that are used to tune loudspeakers such as. A software tool that reached Mac users in 1997 was named SpectraFoo, by Metric Halo. At the same time, some early Smaart users found that after tweaking their drivers they could get Smaart to work on an Apple computer, the software running inside an x86 emulator such as 'with varying results'.

JBL-Smaart version 1.0 demo for (1995) As early as 1978, field analysis of audio was undertaken by, known by his nickname 'Dr. Don', while working on sound systems used by the Grateful Dead. Pearson published articles about impulse response measurements taken during setup and testing of concert sound systems, and recommended the Dead buy an expensive 2032 Dual Channel FFT analyzer, made for industrial engineering.

Along with Dead soundman, Pearson developed methods of working with this system to set up sound systems on tour, and he assisted Meyer engineers working on a more suitable source-independent measurement system which was to become their SIM product. As well, Pearson had an 'intimate involvement' with the engineers who were creating Smaart, including a meeting with Jamie Anderson. Smaart was developed by in association with, touring sound engineer with and. In 1995, Berkow and Thorny founded SIA Software Company, produced Smaart and licensed the product to JBL. First exhibited in New York City at the 's 99th convention in October 1995 and described the next month in, in May 1996 the software product was introduced at the price of $695, the equivalent of $1,084 in today's currency. Studio Sound magazine described Smaart in 1996 as 'the most talked about new product' at the 100th AES convention in Copenhagen, exemplifying a new trend in software audio measurement.

Calvert Dayton joined SIA Software in 1996 as graphic designer, technical writer and website programmer. Smaart was unusual because it helped audio professionals such as theatrical do what was previously possible only with highly sophisticated and expensive measurement devices.

Audio system engineers from used Smaart to tune the sound system at each stop during 's 1997–1998. As it increased in popularity, engineers who used Smaart found mixed results: touring veteran Doug Fowler wrote that 'misuse was rampant' when the software first started appearing in the field. He warned users against faulty interpretation, saying 'I still see bad decisions based on bad data, or bad decisions based on a fundamental lack of understanding of the issues at hand.' Nevertheless, Clive Young, editor of Pro Sound News, wrote in 2005 that the introduction of Smaart in 1995 was the start of 'the modern era of sound reinforcement system analysis software'. In 1998, JBL Smaart Pro won the category for computer software and peripherals. (EAW) bought SIA Software, and brought in Jamie Anderson to manage the division. Version 3 was introduced under EAW's ownership, with the additional capability of accepting optional which could be used to apply sound system adjustments, as measured by Smaart, to digital signal processing (DSP) equipment.

The external third party DSP would perform the corrections indicated by Smaart. SmaartLive 4 software running on an laptop in 2002, mounted in a portable case Versions 4 and 5 were built upon the foundation of version 3, but with each major release, the application was getting more and more difficult to write, and further improvements appeared practically impossible to implement. For version 6, the designers decided to tear Smaart back down to its basics and rebuild it on a flexible multi-tasking, multi-platform framework which would allow it to be used on and Windows machines.

Writing it took two years, and it was released in a package which included the earlier version 5 because there was not enough time to incorporate all elements of the existing feature set. Anderson said in 2007, 'we released Version 6 without all of the features of 5, but we are adding those features back in.' Smaart 6 was nominated for a TEC Award in 2007 but did not win. EAW developed a prototype in 2005, the UMX.96; a console which incorporated SmaartLive 5 internally. Any selected channel on the mixer could be used as a source for Smaart analysis, displaying, for instance, the real-time results of channel equalization. The console could be configured to send multiple microphone inputs to Smaart, and it offered constant metering of in decibels.

When it was put into production in 2007, band engineer Don Dodge took the mixer out on a world tour with, the first concert mixed in March 2007. With its 15-inch able to serve both audio control and Smaart analysis functions, Dodge continued to mix Foreigner on it throughout 2007 and 2008. Rational Acoustics was incorporated on April 1, 2008.

On November 9, 2009, under the leadership of Jamie and Karen Anderson, programmer Adam Black and technical chief Calvert Dayton, Rational Acoustics became the full owner of the Smaart brand. Rational released Smaart 7 on April 14, 2010; a version which uses less processing power than v5 and v6 because of efficiencies brought about in the redesigned code. Smaart 7 was written using a new architecture, it was given improved data acquisition. Other new features include changes and delay tracking.

Users can run simultaneously displayed real-time measurements in multiple windows, as many as their computer hardware will allow. Smaart 7 was nominated in 2010 for a TEC Award but did not win. In April 2011, Smaart 7 was named one of four Live Design Sound Products of the Year 2010–2011. Version history. May 1996 – JBL-Smaart 1.0. March 1997 – JBL-Smaart 1.4. 1998 – SIA-Smaart Pro 2.

April 1999 – SIA-Smaart Pro 3. 2000 – SIA SmaartLive 4. October 2000 – SIA SmaartLive 4.1. April 2001 – SIA SmaartLive 4.5.

September 2001 – SIA SmaartLive 4.6. June 2002 – SIA SmaartLive 5. October 2003 – SIA SmaartLive 5.3. 2006 – EAW Smaart 6. April 2010 – Smaart 7.

October 2010 – Smaart 7.1. April 2011 – Smaart 7.2. July 2011 – Smaart 7.3. August 2012 - Smaart 7.4. April 2014 - Smaart 7.5. March 2016 - Smaart 8.0.

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