Entries by Brenda Brown

Ideal vs Real Loudspeaker Directivity

/by

By Pat Brown

Understanding the ideal loudspeaker directivity will form an understanding of the trade-offs involved in real-world devices.

When it comes to loudspeakers and the audio marketplace, one word comes to mind-diversity. How can there be so many different … Read more

Measured vs. Predicted Loudspeaker Array Response

/by
 Meaningful Metrics – By Pat Brown

Many designers use arrayed loudspeakers to cover the audience. Computer modeling must be used to determine the array behavior. This study compares the measured vs. predicted response of a 3-horn array.

Room modeling programs … Read more

The Magic Behind Multi-Pattern Mics

/by

Theory and Practice – By Dale Shirk

This article will take a closer look of how multi-pattern mics work.

Multiple pattern microphones have been used in studio work for years, and today are becoming very common in live sound as … Read more

The Bigger Picture on Equalization

/by
By Pat Brown

Equalization of a loudspeaker is usually done on-axis.  In this article, Pat Brown suggests a modification to this approach.

The procedure often followed for equalizing a loudspeaker is to place the measurement microphone on-axis and adjust for … Read more

Business of Learning Part 3 – Levitt Homes

/by

By Brad Nelson

Levitt Homes is another company that was significantly altered in the 1950’s.  This is their story and some beneficial lessons that they learned.

Previously in this series, we were introduced to five companies which began or were … Read more

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

/by
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

Which Impedance? Nominal Minimum / Maximum Average

/by
By Pat Brown

This article addresses three dominant reasons for measuring the impedance of a loudspeaker.

The impedance of a loudspeaker characterizes the opposition that it presents to current flowing from the amplifier. The impedance is both complex and frequency-dependent. … Read more

Think Digitally

/by

By Steve Macatee

Welcome to a recurring column on many things digital.

Years ago, Apple Computer ran an ad campaign with photos of famous people with the slogan “Think Different.” This column’s title is an unfortunate reality of living in … Read more

Sound Sources for RT Measurements

/by
By Pat Brown

What’s the best way to measure reverb times? Balloon pops? Omni loudspeakers? This article compares multiple source types and presents some surprising conclusions that can greatly simplify the RT collection process.

Introduction

There have been some threads … Read more