Tag Archive for: Directivity

What's a DLL? and when do I need one?

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By Pat Brown

This article addresses some specifics of the direct field prediction process, specifically the sound radiation patterns from loudspeaker arrays and if DLL is a useful too.

The predictions performed by acoustic prediction software can be divided into … Read more

Using All Pass Filters to Improve Directivity Response

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By Charlie Hughes

In this article, Charlie will how all pass filters can be used to improve directivity response of a loudspeaker.

All pass filters are perhaps one of the most overlooked and poorly understood tools for the general audio … Read more

Reverberation Time… What Could Be Simpler?

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Meaningful metrics – by Pat Brown

Modern measurement systems and Standards add both clarity and confusion to the determination of the reverberation time of a space.

The reverberation time (RT) is one of the most fundamental room measurements. It gives … Read more

Miking a Choir Without Feedback

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Tools of the Trade – By Pat Brown

Pat Brown showed how he miked a choir to get a lot of acoustic gain and no feedback. MP3 included.

I recently helped provide sound reinforcement for a local benefit concert. “An … Read more

The Octagon-Shaped Room Pt 1 – Site Survey

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A Case Study – By Pat Brown

This article by Pat Brown presents a case study of an audio installation of an octagon-shaped room, beginning with a site survey.

Introduction

In this multi-part article I will look at a complete … Read more

Direct-Field Coverage Quick-Check

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Theory and Practice – By Dale Shirk

Dale Shirk presents a practical way to check direct-field coverage in live spaces using tools you may already own.

It seems logical to stroll around in a room with a sound level meter … Read more

Loudspeaker Toaster – An Abbreviated Loudspeaker Power Test

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By Pat Brown

Pat Brown presents an abbreviated loudspeaker power test that you can do at home. It includes the necessary details, including the equipment setup.

The 2005 Newsletters included a number of articles related to loudspeaker power ratings and … Read more

Do-It-Yourself Cardioid Sub

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By Dale Shirk

Dale Shirk helps us to understand the principles of how the cardioid sub can control the directivity in lower frequencies.

“Low frequencies are omnidirectional.” Seems we’ve heard that age-old wisdom since we were infants bouncing on mama’s … Read more