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Directivity Reference for System Design
by Pat Brown
The key to working in the field of audio and acoustics is to understand the need to establish a reference condition. This allows changes to be assessed objectively. You need a “known” in order to determine unknowns.… Read more
Line Array Intelligibility Study
by Pat Brown
A demonstration and investigation of seven active beam-steered arrays and a passive array Intelligibility study in a reverberant space.
Active beam-steered line arrays have become popular for use in large, reverberant spaces. They can produce a strong … Read more
FIR-ward Thinking – Part 1
by Pat Brown
This is Part 1 of a series that will examine the use of FIR filters in sound reinforcement systems.
Introduction
Finite Impulse Response (FIR) filters (pronounced either “F-I-R” or alternately, like the tree) are the rage these … Read more
Room Measurements and Signal-to-Noise Ratio
by Pat Brown
In this article, Pat Brown gives a step-by-step process of making room measurements in an exhibition hall where signal-to-Noise ratio was a problem.
In June, 2011 I presented some measurements made at the Sunrise Auditorium in Sao … Read more
Loudspeaker Grille Percentage Perforation
by Steve Liddle
Loudspeaker Grille Percentage Perforation – Steve Liddle takes four loudspeaker grilles and measures the effect of the frequency response on each of them.
The Heard strikes again! A recent thread on the SynAudCon Email Discussion Group prompted … Read more
How to extract an impulse response from a recorded sweep?
Pat Brown shows a step-by-step description of how to extract the impulse response from the recorded sweep.
Since the introduction to GratisVolver™ in our last Newsletter, I have received lots of mail requesting a step-by-step description of … Read more
Room Measurements for Sunrise Auditorium – Sao Paulo, Brazil
by Pat Brown
Pat Brown shows the process of collecting room measurements in Sunrise Auditorium.
The Convention Center at AES-Brazil included a 2300-seat auditorium. It is an architecturally interesting space constructed in the 1970s. The fluted ceiling structure is concrete … Read more
Covert Room Measurement
by Pat Brown
Pat shared a quick way to get a room measurement using a balloon pop.
We conducted SynAudCon training in Puerto Rico in December 2010. San Juan is the oldest city in the US, and contains some very … Read more