The Operator Fundamentals covers the fundamentals of setting up a Smaart measurement rig and using Smaart to make basic RTA, Spectrograph, Transfer Function and Impulse Response measurements. Special attention is paid throughout the course to the subject of how to make valid and useful measurements, as opposed to simply making cool squiggly lines appear on the screen.
This course begins with an overview of both the general system measurement theory involved as well as the operational context in which Smaart is used, namely in Sound System Engineering and Alignment. This course focuses on providing the attendee with a functional knowledge of how Smaart operates as a tool before expanding to the application of that tool in sound system engineering, and as much as possible, examines data interpretation as much as acquisition.
The first 2 days of class are primarily a classroom lecture and lab format, relying heavily on in-class measurements and utilizing a signal distribution system to distribute the instructor’s stereo measurement signals to the entire class.
The 3rd day involves a hands-on practicum focusing on the implementation of the information presented in the first 2 days. It presents the use of Smaart in a methodical process of evaluating and adjusting the individual system components, and the subsequent combination of multiple subsystems into a multi-channel / distributed sound system. Throughout this alignment practicum, the session seeks to reinforce the necessary collaboration of
measurement and listening skills.
The Operator Fundamentals Class provides:
Topics Covered Include (but not limited to):
Fundamental Measurement Concepts:
Single channel vs. dual-channel measurements
Time domain vs. frequency domain analysis
What the heck is an FFT?
Smaart Software Overview:
Software install/update & upgrade
Measurement control & interface navigation
Anatomy of a Measurement Rig :
RTA and Spectrograph Measurements:
Averaging and Banding
Feedback identification (& other cool things to do with Spectrograph
Calibration for SPL
Transfer Function Measurements:
Magnitude, Phase & Coherence traces: how they are generated and how to read them
Data Thresholding Functions and Improving Measurement Quality
Data Storage and Trace Averaging
Impulse Response Measurements:
Setting up the delay for Transfer Function measurements: Live IR and Delay Tracking
Measuring delay times for speaker system time alignment
Tips for improving IR measurement quality
The Impact of FFT Time Constant (window length) on Measurements
Measurement Position Choice and Microphone Placement
Measuring and Tuning an Individual Speaker System
Extension of Coverage: the Addition of Fill and Delay Systems
The Smaart Operator Fundamentals course is open to all interested persons.
Prior system alignment experience is not required, but is definitely helpful.
This course does assume a working knowledge of professional sound system engineering
practices and basic audio fundamentals.