Entries by Pat Brown
Divide and Conquer – The Schroeder Frequency
by Pat Brown
Not all sound energy in a room is reverberation. The Schroeder frequency divides the spectrum based on sound wave behavior.
It has been understood for centuries that the behavior of sound waves indoors is frequency-dependent. The room … Read more
A Contrast of Statistical and Geometric Room Acoustic Analysis
by Pat Brown
Statistical and geometric room acoustics analysis have been with us for well over a century. Computer modeling makes geometric acoustic analysis (GA) practical at the drawing board. This article contrasts the two methods.
The room impulse … Read more
Room Survey 38 – Ministry of Foreign Affairs – Bangkok, Thailand
Location: Bangkok, TH
Investigator: Tanadej Siriwattaprayoon1
Room: Vethes Samosorn, Ministry of Foreign Affairs
Microphone: Omni
Loudspeaker: NTI DS2 with NTI PA3 amplifier
Source Signal: 14-sec log sweep
Convolver/Deconvolver: GratisVolver™
Introduction
It’s been a while since I have published a … Read more
Small Room Acoustics in the Zoom Era
by Pat Brown
Solving the acoustical problems of small spaces requires a different palette of tools than those used in large spaces.
Room resonances can extend well up into the speech range to complicate conferencing, recording, and online meetings creating
PAT VERSION: HoC Component Comparisons
Microphone Lineup
Mics over Zoom™ Link – Wired Network/No Screen Share/Orig Sound “Off”
Headset Lineup
… Zoom Call Issues
Original-to-Zoom Comparison (fast network)
Note: Listen closely through a stereo playback system. The sound should remain at a fixed location throughout the track. The small timing differences caused by Zoom result in the sound image “wandering” between the left and … Read more
Idealized Models Help Us Understand Real-World Audio and Acoustic Concepts
The theoretical provides a reference for understanding the physical world
Ideal vs. Real
The fields of audio and acoustics are a mystery to much of the general engineering community. The blend of art, science, objective, and subjective makes audio and … Read more