PreSonus StudioLive AI Series - Manual (Page 42)

4 Universal Control-AI and VSL-AI
4.9 Smaart System Check Wizards
StudioLive ™ AI Software Library
Reference Manual
38
Clicking on the Smaart button at the top of the VSL-AI window will launch Smaart
System Check mode. While in this mode you can launch any of the following wizards:
• SRA: Smaart Room Analysis generates a frequency-response trace
and overlays it on the parametric EQ in VSL-AI so you can adjust
your system to get rid of unwanted anomalies in the room.
• SSD: Smaart System Delay calculates and sets the correct
amount of delay time between two full-range systems.
• SOC: Smaart Output Check verifies that your system
outputs are routed correctly and are passing signal.
To run any of the Smaart System Check Wizards, VSL-AI will need
to take over your mixer. When you first click on the Smaart System
Check button, you will see a warning to this effect.
Clicking on the “Proceed” button will launch the Wizard select window
and you will no longer have control over your mixer. You can exit
the Wizards and regain control at any point simply by clicking on
the Overview, Fat Channel, GEQ, or Setup tabs in VSL-AI.
Note: To run the SRA and SSD wizards, you will need to connect a measurement
microphone to your StudioLive’s Talkback input. You’ll also need a mic stand
and a long enough cable to place the mic in front of your speakers.
A measurement microphone is special type of condenser microphone that is designed
to provide an accurate reproduction of a room’s sound characteristics for use with
audio-analysis tools, such as RTAs and spectrographs. Measurement microphones
typically have an omnidirectional polar pattern and deliver a very flat frequency
response between a low end of 5 Hz to 30 Hz and a high end of 15 to 30 kHz. While
measurement microphones can be quite expensive, most affordable models will do
the job nicely when paired with the Smaart System Check Wizards. PreSonus offers
the budget-priced PRM1 Precision Measurement Microphone for this purpose.
4.9.1 Smaart Room Analysis Wizard
The SRA Wizard is an automated process that will guide you through the steps
of acquiring a frequency-response trace for your audio system. A frequency-
response trace is the plotted result (frequency and amplitude) of the system
measurement. This measurement is calculated using Rational Acoustics’
transfer function, which is a set of proprietary algorithms that compare the
signal from a measurement mic to computer-generated pink noise.
Sound System
Reference Signal
(Input Signal)
Measurement Signal
(Output Signal)
Reference Channel RTA
(Pink Noise)
=
Measurement Channel RTA
Frequency Response Trace