Technical Articles

In-depth technical articles covering audio measurement science, standards compliance, signal processing, and room acoustics. Each article references specific measurement standards and links to the relevant SonaVyx tool.

Technical Articles

Building Acoustics

Sound Transmission Loss & STC Ratings — ASTM E413

Building Acoustic Standards — ISO 16283 & ASTM E336

Calibration

Microphone Calibration for Audio Measurement

Compliance

OSHA Noise Exposure Limits — 29 CFR 1910.95

Fundamentals

Decibel Math — Adding, Subtracting & Comparing dB

How to Read & Measure Frequency Response

Loudness Perception — Fletcher-Munson & Equal Loudness

The Audio Signal Chain Explained

Live Sound Measurement Basics — Beginner's Guide

Audio Measurement Accuracy & Uncertainty

History

History of Reverberation Time — From Sabine to AI

Intelligibility

STIPA Speech Intelligibility — IEC 60268-16

Loudspeakers

Speaker Sensitivity Rating Explained

Physics

Sound Propagation Outdoors — Atmospheric Effects

Problems

Comb Filtering — Causes, Detection & Solutions

Room Acoustics

Complete Guide to Room Acoustics Measurement

RT60 Measurement Standards — T20, T30, EDT

Room Modes & Standing Waves — Calculation & Treatment

Impulse Response in Room Acoustics

Ideal RT60 by Venue Type — Concert Hall to Classroom

Room Treatment

Sound Absorption — NRC & Material Selection

Acoustic Treatment vs Soundproofing

SPL & Noise

SPL Measurement Guide — IEC 61672 Accuracy

A-Weighting Explained — Why dBA Matters for Noise

Noise Criteria (NC/RC) — HVAC Noise Assessment

Signal Processing

FFT Audio Analysis — RTA vs FFT for Sound Engineers

Standards

IEC 61672 Sound Level Meters — Class 1 vs Class 2

ISO 3382 Room Acoustic Parameters — Complete Reference

System Analysis

Transfer Function in Audio — Phase, Magnitude & Coherence

System Design

Crossover Design — Butterworth vs Linkwitz-Riley

Speaker Time Alignment — The Science of Phase Coherence

Sound System Gain Structure — Input to Output

Technology

Web Audio API for Professional Measurement

AI in Audio Analysis — How ML Changes Sound Engineering

WASM DSP for Audio — Native Performance in the Browser