Posts

Collecting Binaural Data for Recordings – Accuracy vs Realism

By Pat Brown

This article will look at some of the ways to get binaural data with emphasis on microphone techniques.

The human auditory system is equipped with two input ports – the left and right ears. This “binaural” processing … Read more

How to extract an impulse response from a recorded sweep?

By Pat Brown

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

Real-World Reverberation – PureVerb™

By Pat Brown

Learn about a software tool called PureVerb™ that can create natural sounding reverberation effects.

Reverberation effects can be added to recordings using a signal processor or wave editor. Most of these effects only allow a very limited … Read more

Large Room Acoustics

Syn-Aud-Con Class Visits Mega-church By Pat Brown

The Louisville, KY Sound Reinforcement for Designers class visited Southeast Christian Church on the first evening of the seminar. We were treated to an overview of the main auditorium as well as … Read more

Polarity 101 – Some subtleties regarding device polarity

by Pat Brown

This article will help you understand polarity and ways to test polarity.

Good sound system installation practice dictates maintaining proper signal polarity from system input to system output. An audio signal waveform always swings above and below … Read more

A Do-it-Yourself Guide to Computing the Speech Transmission Index

By Farrel Becker

In this article, Farrel Becker shares the steps required to compute the Speech Transmission Index (STI) from a measured impulse response.

The Speech Transmission Index (STI) is a method of measuring speech intelligibility in noisy and/or reverberant … Read more

Sound System Designers Site Surveys – Three things to Consider

By Pat Brown

Sound System Designers site surveys should include the Acoustical environment, Ambient noise and radio frequency survey.  Learn why these are so important.

Site surveys are a necessary part of all construction trades. The ground must be firm … Read more

Acoustic Measurements Without Computers

By Pat Brown

In this article, Pat Brown shows how to record acoustic measurements without a computer and get better data.

It is difficult to describe how something sounds. The terms are vague and subjective, and often have different meanings … Read more

Early Decay Time – Wrap Up

By Pat Brown

In this article, Pat Brown addresses some subtleties regarding early decay time calculation and significance.

The Spring installment of our Newsletter featured an exposé on the Early-Decay Time and its relevance to the design of a sound … Read more

Early Decay Time as a System Performance Benchmark

By Pat Brown and Peter Mapp

In this article Pat Brown and Peter Mapp looks at early decay time as a system performance benchmark.

It’s been over 100 years since Wallace Clement Sabine did his ground-breaking acoustical study of the … Read more