Home
Feed

Extend

Hashnode Pro
Hashnode for Agents

Resources

The foreword
Hashnode gql skill

Buildful - AI coding agent that delivers frontier-level results at a fraction of the cost Bug0 - The AI-native e2e QA regression testing Hackathons Changelog Brand @hashnode on X Hashnode on LinkedIn Support - hello+support@hashnode.com Code of Conduct Terms Privacy Sitemap

Search Hashnode

Search posts, tags, users, and pages

Discussion on "Building an IEC 61672 Compliant A-Weighting Decibel Filter with the Web Audio API" | Hashnode

Feed/

Discussion

Building an IEC 61672 Compliant A-Weighting Decibel Filter with the Web Audio API

How to translate analog acoustic transfer functions into digital biquad filters, handle browser AGC distortion, and measure sound levels in real-time.

Oct 21·6 min read·soundleveltest.hashnode.devRead the article

#javascript
#webdev

#software-engineering

#web-development

#reactjs

Written by

Nayeem SoundTest

@nayeemsoundengg · Los Angeles, USA

View profile

Online sound level meter | Measure noise in decibels.

Hi, I'm Nayeem, the software developer behind SoundLevelTest.com. I built the site to provide simple, browser-based tools that help people test and understand sound using devices they already have.

Responses1

Markdown supported · ⌘↵ to post

Indie Ship Log

Oct 21

The AGC note is the part I would have missed. I build small browser tools on my own, and I keep treating getUserMedia audio as the raw mic when the browser has already flattened it for calls. Turning echo cancellation, noise suppression, and auto gain off before the filters is the unglamorous step that makes the reading mean anything.