Knowledge Base

In a world of high-definition line arrays and digital consoles, why do we still look at a Real-Time Analyzer (RTA)?

A practical guide to Smaart input calibration using SPL calibrators. Ensure reliable SPL, Leq, and exposure measurements in live sound work.

AI is a tool for data processing, not decision making. It can help you clean up your measurement, but it can’t tell you why the room feels the way it does.

As we kick off another busy year of live events in Norway, SPL monitoring remains a key requirement for most concerts and festivals.

Explore Smaart v9 Suite, the flagship audio measurement software from Rational Acoustics. Dive into its Real-Time, Impulse Response, and SPL modes…

We honour the scientists and engineers who laid the foundations of acoustics, audio measurement, and electronics.

iSEMcon microphone alternatives are essential for professionals who require immediate acoustic measurement solutions. Some iSEMcon microphone models have long delivery times, …

NEW for 2026 – The MELLab T‑60 is a next‑generation measurement microphone featuring a flat free‑field response up to 60 kHz and up to 150 dB SPL …

Learn about Smaart Bundles offered by TZ Audio Norway — curated combinations of Smaart software licences and professional measurement tools …

Discover how to get started with 10EaZy and Smaart in just a few steps: plug in your pre‑calibrated 10EaZy unit…

In the December 2025 update, 10EaZy (by SG Audio) advances to version 2.9 — offering Windows 11 driver support, automatic removal of outdated drivers, improved log-file management and a new beta JSON-server …

Learn how to optimize Smaart measurements with compander-free wireless systems…

Discover the best audio interfaces for Smaart in 2025. This ranked guide compares entry-level, mid-range, and professional interfaces, highlighting features like phantom power, driver stability, and multichannel support to help you choose the perfect interface for your measurement rig.

The Norwegian audio community continues to raise the bar for professional standards. Following two intensive Smaart Operator courses held this spring—one in Oslo in May and one in Hammerfest in June…

It’s not every day that a world-class audio training event makes its way to the far north of Norway—but this past week, the town of Hammerfest played host to a… Read more: Smaart on the edge … of the world

This week, 15 aspiring Smaart operators from across Norway and Sweden have gathered at the Riksteatret in Oslo to take part in an intensive training course in sound system measurement… Read more: 15 New Smaart Operators in Training at Riksteatret, Oslo

Thomas snakker med Oddgeir Løvold, lydtekniker til Vassendgutane. Oddgeir deltok i Smaart seminar ledet av Thomas Züllich og er certified Smaart operator. Mer informasjon om SMAART og lyd seminarer –… Read more: Interview med Oddgeir Løvold, lydtekniker til Vassendgutane

Press Release   For Immediate Release  Smaart Operator Fundamentals & Application Practicums Course at Riksteatret in Oslo May 20–23, 2025 Oslo, Norway — Sound engineers, technicians, and audio enthusiasts will… Read more: Smaart Operator Fundamentals & Application Practicums Course at Riksteatret in Oslo May 20–23, 2025

FOR IMMEDIATE RELEASE Experience the Midnight Sun at the Smaart System Engineering Bootcamp in Hammerfest, the World’s Northernmost Town! Hammerfest, Norway – June 3-6, 2025 – This summer, the northernmost… Read more: Experience the Midnight Sun at the Smaart System Engineering Bootcamp in Hammerfest, the World’s Northernmost Town!

Timișoara, Romania – October 10, 2024 – The System Engineering Bootcamp & Smaart Software training, an intensive four-day system engineering training event, has successfully concluded in Timișoara. Hosted by FITT… Read more: Press Release: Successful Completion of Smaart Bootcamp in Timișoara

Join us in celebrating the success of those who have passed the Smaart Operator Certification. Your hard work and dedication have paid off—well done! October 2024 Joachim Venbergetjoachim@venberget.noDrammen, Norway Ștefan… Read more: Congratulations to Our Newest Smaart Operator Certification Achievers!

Are you ready to elevate your audio engineering skills? This October, Timisoara becomes the epicenter of professional audio training with the highly anticipated Smaart Bootcamp. Designed for sound engineers, audio… Read more: Join the Ultimate Smaart Bootcamp in Timisoara, Romania!

Harstad Kulturhus recently hosted a vibrant and enriching Smaart Bootcamp, which concluded with resounding success! The event, held over four intensive days, saw five dedicated students come together to deepen… Read more: Smaart Bootcamp at Harstad Kulturhus: A Resounding Success!

In simple terms, I purchase the software from Rational Acoustics and distribute it under my own company, which is now called TZ Audio. While we work closely as partners with my suppliers, I am a distributor, not an extension of any company I represent and distribute the products of.

Smaart Bootcamp in Harstad announced!

A Personal Message from Thomas Züllich – Over the past months I have been made aware that several copycat websites and email senders have begun using my name, my initials (“TZ”), and variations of the TZ Audio brand in attempts to mislead people—especially content creators and small businesses.

Acoustic Engineering, Sound Optimization, SMAART BootCamp, Reykjavik Events,Harpa Venue, Acoustic Analysis.

We would like to extend our congratulations to those who successfully cleared the SMAART Operator Level 1 exam. October 2023 September 2023 May 2023 April 2023 To locate individuals who… Read more: Congratulations to the Smaart Operator certification!!!

Konsertsystemer, a renowned sound company in Norway, recently held a smaart class in their state-of-the-art recording studio, Studio A. For those unfamiliar, smaart is an acronym for “Sound Measurement Acoustical… Read more: Smaart Operator Fundamentals class at Konsertsystemer, Oslo

Are you looking to upskill your audio engineering knowledge and gain certification in just four days? You had to look no further than the Smaart Operator Fundamentals and Operator Application… Read more: report – Smaart bootcamp – April 11. to 14. 2023 – Riksteater, Oslo, Norway

The Smaart class taught by Thomas Züllich was a valuable opportunity for audio engineers to enhance their skills and knowledge.

In honor of Rational Acoustics’ 15th anniversary, we are offering 15% off of Smaart new license purchases from April 1 through April 15.No Joke! April 1 is here. In the past Rational… Read more: Rational Acoustics 15 Years

Timis County Youth Foundation, Timișoara, Romania in Timișoara, Romania was buzzing with excitement as 12 students gathered for the Smaart class taught by Thomas Züllich from March 20th to 23rd,… Read more: report – Smaart class – March 20. to 23. 2023 – Timis County Youth Foundation, Timișoara, Romania

AUGUST 29, 2022 We are excited to announce that the official release date for Smaart v9 has been set for Tuesday, September 27, 2022. Check out the Smaart v9 Info Page for more… Read more: Smaart v9 Release Date Announced

The course is split in two parts: 3-day Smaart Operator Fundamentals 2-day Smaart Operator Advanced Class 16 students maximum per class The classes start at 9:30 and are finished by… Read more: coming up – Smaart class mega session – September 12. to 16. 2022 – Steinkjer, Norway

and another one in the box. 9 eager engineers sat through 4 intense days of Smaart training. First a 3 day operator class followed by a full day of practice… Read more: report – PORSGRUNN, Ælvespeilet – Smaart class – may 2022

12 eager sound engineers from all over Norway, Sweden & Lithuania came and spent 4 days learning how to optimise a sound system with Smaart. Henrik Gjøsæter, Kolbjørn Lysol, Fredrik… Read more: report – SMART Class, OSLO, Riksteatret, April 2022

[envira-gallery id=’4668′] 18 engineers came to learn how to use Smaart properly. The class was held at Musikhuset Aarhus in the “Rytmisk sal”, so we had full access to a… Read more: report – Smaart class – Musikhuset Aarhus April 2022

In co-operation with the Møre & Romsdal Fylkeskommune and initiative of Lydkjelleren AS of Ålesund there will be a combined Smaart Operator fundamentals & Application Practicums class held in the… Read more: Sykkylven Kulturhus – SMAART OPERATOR FUNDAMENTALS & APPLICATION PRACTICUMS – october 2021

We are excited to announce the release of Smaart 8.5. This FREE update includes a major overhaul of Impulse Response Mode as well as a new “Advanced Delay Finder” dialog… Read more: Smaart ® v8.5 Update Now Available

… made easy! with the SLS Audio MiEMi™

Fra Tirsdag 6. Oktober til Torsdag 8. Oktober gjennomføres det SMAART OPERATOR kurs på Stormen Konserthus i Bodø. Foreleseren var Thomas Züllich. Kurset ble holdt på Norsk. Det var mye… Read more: Stormen smaart kurs vel overstått

Da var 3 dagers Smaart operator kurset vel overstått. I disse vanskelige tider er det viktig, kanskje enda viktigere enn ellers, å bruke tiden fornuftig og jobbe med å øke… Read more: Dampsaga kurs vel overstått

3-day Smaart Operator class – 06/10/2020 – 08/10/2020 1-day Smaart application practicums – 06/10/2020 – 08/10/2020 For å bestille Smaart Application Practicums må du ha deltatt på et Smaart Operator… Read more: SMAART kommer nordover. Kurs på Stormen, Bodø i Oktober.

Takket fantastiske innsats fra Terje Watterud fra SCENEMANN AS og de snille menneskene ved Dampsaga Kulturhaus i Steinkjer gjorde det mulig å arrangere en 3-dagers Smaart-operatørklasse denne uken. Les mer… Read more: Steinkjer Smaart operator class announced

Rational Acoustics has introduced an online certification for those looking for confirmation not only that they’ve been to a class or read the manual, but that they can competently operate… Read more: Rational Acoustics has introduced an online certification

Dear friends, In consideration of the latest information regarding the Covid-19 pandemic, Rational Acoustics Scandinavia has taken the following steps to ensure the health and safety of our employees and… Read more: Rational Acoustics Scandinavia operation during corona outbreak – march 24. 2020

These events had to be cancelled in light of the Corona virus situation. In March 2020 we will conduct a few Smaart Intro Workshops at our new dealers in Scandinavia.… Read more: Smaart Intro Workshop tour 2020

Last week Harnösand attracted many sound engineers from Sweden and abroad.

3-Day Smaart Operator Fundamentals, Kilden on August 18. to 20. More information and booking – click here 1-Day Smaart Application Practicums, Kilden on August 21. More information and booking –… Read more: Kristiansand, Kilden – Smaart Operator Fundamentals & Application Practicums – August 2020

Do not miss this chance to participate in the Smaart class in northern Scandinavia.  Härnösands Teater stora scenenStorgatan 987129 HarnösandSweden Dates: February 11th – 13th 2020 Instructor: Thomas Züllich The… Read more: 3-Day Smaart Operator Fundamentals Harnösands Teater

14 sound engineers from all over Norway, Great Britain and Ireland came to the amazing Kilden concert house in the lovely town Kristiansand on the south coast of Norway. Kristiansand… Read more: Smaart class at Kilden Concert house Kristiansand, August 2019

On August 13th to 15th Thomas Züllich will be teaching a 3 day Smaart operator class at the Kilden Theater & Konserthus in Kristiansand. – the class will be taught in English.… Read more: Kristiansand August 13th to 15th Smaart 3 day operator course @ Kilden Theater & Konserthus

16 sound engineers from pretty much all over the world came together at Riksteatret to enjoy 3 days of Smaart class. It were three intense days with sound system measurements… Read more: Smaart class at Riksteatret, may 2019

The event had to be cancelled. Please stay tuned and follow our newsletter for more classes in 2019 and 2020.

Done and over – on to the next ones in Trondheim and Oslo. Have you booked? If not hurry. Only a few spots left.

On May 7th to 9th Thomas Züllich will be teaching a 3 day Smaart operator class at the Riksteatret in Oslo. – the class will be taught in English. THE COURSE IS… Read more: Oslo may 7th to 9th Smaart 3 day operator course @ Riksteatret

On March 26th to 28th 2019 Rasmus Rosenberg will be teaching a 3 day Smaart operator class @Olavshallen in Trondheim.

On March 26th to 28th 2019 Rasmus Rosenberg will be teaching a 3 day Smaart operator class @Olavshallen in Trondheim.

Smaart v8.3.1 is a minor patch to 8.3, containing important bug fixes and stability improvements. This patch is recommended for all v8 users. If you’re updating from 8.2 or later,… Read more: Smaart 8.3.1 Update Released

This year Rational Acoustics is celebrating 10 years. We can look back at a very successful decade of making sense of the noise, and are very certain that there are… Read more: Smaart courses in fall 2018

The 2nd major version update for Smaart v8 has been released.  This update includes a complete overhaul of Smaart’s SPL measurement functionality  and integration with 10EaZy SPL Monitoring systems from SG Audio, aps.

2-Day Smaart 2-day operator fundamentals in Oslo, Norway. This class will be hosted by BENUM and will be taught by Rasmus Rosenberg. Dates: January 16th & 17th 2018 Read more… Read more: 2-day operator fundamentals, Oslo, Norway 2018-01-16-17

We just wanted to thank the sound crew of the Oslo Opera House for having invited us to do a Smaart workshop at their premises. Thomas gave a 1-day Smaart… Read more: Smaart Intro Workshop – Oslo Opera House

2-Day Smaart 2-day operator fundamentals at Hotel Legoland in Billund, Denmark. This class will be hosted by MAVT and will be taught by Jakup Knudsen. Class language: Danish Class dates… Read more: 2-day operator fundamentals, Denmark 2018-01-30-31

September 5 – September 6 – 2017 2-Day Smaart Training Class at Hotel Legoland in Billund, Denmark. This class will be hosted by MAVT and will be taught by Jakup… Read more: Smaart Training Class at Hotel Legoland in Billund, Denmark – sept 2017

Coming January 24th, 2017   The latest addition to the dual-channel Smaart “Di” platform – Smaart Di v2 – will be released on January 24th, 2017.  Smaart Di v2 takes… Read more: Smaart Di v2 – Coming Soon

Så er der Smaart workshop i dejlige Vejle. Workshoppen afholdes i Vejle Musikteater med Thomas Züllich som foreleser. Tilmelding skal ske via mail: jak@mavt.dk. Der er 16 ledige pladser. Yderligere… Read more: Smaart workshop i dejlige Vejle

Så er der Smaart workshop i det nordjyske. Workshoppen afholdes i Arena Nord med Thomas Züllich som instructor. Tilmelding skal ske via mail: jak@mavt.dk. Der er 16 ledige pladser. Yderligere… Read more: Smaart workshop i det nordjyske

ANNOUNCING THE RELEASE OF SMAART v8.1 v8.1 is the first major version update to the Smaart v.8 measurement platform. An overview of the new features in the 8.1 release is included… Read more: Smaart v8.1 Released

http://www.rationalacoustics.com/2016/07/v-8-0-3-update-now-available/  

Smaart v8 Smaart v8 is the most powerful, flexible and adaptable version of Smaart to date. From studio to stadium, shop to show, Smaart v8 fits the needs of any… Read more: Smaart v8

After yearlong development effort that has reduced our programmer’s fingers to bloody stumps, we are very pleased to announce that Smaart v8 will be released on Tuesday, March 15th.  … Read more: Smaart v8 has arrived

Smaart v8 is the most powerful, flexible and adaptable version of Smaart to date. Let the guys from Putnam explain why.

Thomas is the Scandinavian distributor for Rational Acoustics products and has been an active Smaart user and supporter for over 10 years. Thomas will oversee all aspects of the Scandinavian… Read more: Thomas Züllich – Scandinavian distributor for Rational Acoustics

We have released updates for both Smaart v7 and Smaart v7 Di. Both are free updates and are recommended for all v7 and/or v7 Di users. A detailed list of… Read more: Smaart v.7 and Smaart v.7 DI Updates available

We are pleased to announce that Smaart v.7 Di has been nominated for 2013 TEC Awards.  We are honored by the recognition of Smaart v.7 Di by our industry peers… Read more: Smaart v.7 Di nominated TEC Awards

We are pleased to announce the official release of Smaart v.7 Di (Dual-channel Interface)! Smaart v.7 Di is a streamlined, two-channel version of the standard Smaart v.7 analysis software. The primary focus… Read more: official release of Smaart v.7 Di

John Aldrich from Rational Acoustics explains the new licensing and activation procedure for upgrading your Smaart v7 license to the current 7.4 release. This release is free to v7 license… Read more: Updating to Smaart v7.4

Jamie Anderson discusses the various averaging options in Smaart v7.      

Jamie Anderson discusses the spectrograph view in Smaart v7.  

Jamie Anderson discusses turning measurements on and off, as well as views in Smaart v7.      

Jamie Anderson discusses the fundamentals of the Fast Fourier Transform and how we use it to display audio data in Smaart v7.    

Using Smaart v.7 to examine the addition of two signals, varying their time offset, and viewing the resulting comb filters. Video shows live impulse response, spectrum and transfer function simultaneously.… Read more: Looking At Comb Filters

The all important “release” & “restore” features of Smaart v.7 allows users to move their license between different machines and is critical when updating computer hard drives and operating systems.… Read more: Releasing and Restoring a Smaart v.7 Installation

After 2 years of development, over 150,000 lines of code and gallons of blood, sweat and tears we are happy to announce that Smaart v.7 is now ready for initial… Read more: Smaart v.7 released

The ink is dry and the deal is DONE ! Welcome Home Smaart !! Rational Acoustics LLC is thrilled, honored, excited and generally bursting-at-the-seams to announce that we have completed the… Read more: SMAART BECOMES A RATIONAL PRODUCT