440-lab ~ Online Ear Training


A small browser-based ear-training tool for practicing pitch, intonation, and frequency recognition using the Web Audio API.

440lab.com
github.com/qwell/440-lab

HiFi Log ~ User Driven Equipment Database


HiFi Log is a platform for the hi-fi community. Its aim is to create an all-encompassing database of audio brands and their products, both existing and discontinued. It is designed to help users discover new products while also allowing them to keep track of what they currently own or used to own.

www.hifilog.com

Pitch Playground ~ Intonation, Pitch, Rhythm & Tuning Training


Pitch Playground is a free, ad-free collection of simple tools for musical tuning, rhythm, pitch, and intonation ear training.

Tuning and reference pitches

Use the tuner to check the pitch of a note with your microphone, or play reference tones to practice matching and tuning by ear. The reference pitch is adjustable, so you are not limited to A440.

Pitch and intonation ear training

Practice hearing small differences in pitch and recognizing whether a note is sharp or flat. The exercises are intended to develop pitch discrimination and a more accurate sense of intonation without requiring perfect pitch.

Metronome and rhythm practice

Use the metronome for a steady beat while practicing, choose from common simple, compound, and odd meters, or tap a tempo to set the BPM by feel.

Simple by design

Pitch Playground is designed to be a small, straightforward set of music practice tools: open it, choose a tab, and start practicing. Works well on desktop and mobile.

Free forever

Pitch Playground will always remain free, ad-free, and without in-app purchases. To run this site locally, download and unzip the latest release, which can be hosted on a webserver like nginx or by directly opening index.html.

p.jeltz.org
github.com/qwell/pitch-playground

lipupini ~ Media File Organization System


Lipupini is a public domain platform for organizing computer files like images, videos, sounds and writings that you might want to display under your domain on the Internet. Lipupini aims to support RSS and Fediverse protocols.

github.com/lipupini/lipupini
lipupini-demo.dup.bz/@example

911TABS ~ Tablature Web Search


Tablature Search Engine

Guitar
Guitar Pro
Bass
Piano
Sheet music
Drum
Power
Video

www.911tabs.com

Goom-Online ~ Web Visualization Player


A forgotten music visualizer, revived straight into your web browser.

Goom Display

goom-online.github.io
github.com/goom-online/goom-online.github.io

editmp3tags.com ~ MP3 Metadata Editor


Edit MP3 Tags in Your Browser. Privacy-friendly: files never leave your device. Read & write ID3v2, plus optional ID3v1 for legacy players.

editmp3tags.com

Strobo ~ Turntable Strobe Disk Generator


I had one of these trivial problems. Yesterday I wanted to create a new stroboscope disc for my Metzner rebuild (now with 50HZ 🙂 … After fiddling around with some graphic tools I decided to build a small Web-App (quick and dirty) to support me on this task. It might be of interest? You can use it offline or via the web site…

Main Features:

– Supports 33⅓, 45, 78 RPM + custom speeds
– 50Hz, 60Hz, 300Hz lamp frequencies + custom frequency
– Adjustable disk size, bar length, smoothing
– Custom colors and logo upload
– Drag/rotate/resize logo interactively
– Export: SVG (print), STL/3MF (3D print), FreeCAD macro
– Light/dark theme, EN/DE bilingual
– Offline-capable (standalone download)

strobo.apfelbeck.at
www.diyaudio.com/community/threads/stroboscope-disc-tool-webtool-to-automatically-create-them

Sample Rate Conversion Comparison ~ Hydrogen Audio


HydrogenAudio presents the definitive resource for testing sample rate conversion applications. Each Sample Rate Converter (SRC) is examined against multiple revealing tests, generating an overall quality ranking. A quality ranking needs careful consideration, these tests are formulated to test modern SRC routines, as such they are very sensitive way in excess of the 24 bit (-144dB) audible range. A SRC scoring 60% could very well have inaudible defects if converted to 24 bit, so why the need for high precision testing? An example might be in the studio, audio is processed in many ways, having a clean SRC converter allows further processing steps, including amplification, without fear of audible distortion. The best SRC have distortion down below -300 dBFS, giving plenty of head room for future processing and mixing of different sources.

src.hydrogenaudio.org
en.wikipedia.org/wiki/Sample-rate_conversion

Roland TR-909 Rhythm Composer ~ Web App


This is a web version of the Roland TR-909 drum-machine with painfully hand-made generated html, svg & css and a proper web-audio-api sound engine. It emulates the exact same cumbersome user experience of the original machine.

andremichelle.github.io/tr-909

OpenDAW ~ Online Digital Audio Workstation


openDAW is a next-generation web-based Digital Audio Workstation designed to democratize music production by making professional creation tools accessible to everyone. Built entirely in TypeScript with Web Audio API, it runs in your browser with no required login and no vendor lock-in. Open-source under AGPL-3 and designed with education at its core.

opendaw.org
opendaw.studio
github.com/andremichelle/opendaw

SJPlot Online ~ Phono Cartridge Frequency Response Analysis


You can now use this WEB UI to generate frequency response graphs

sjplot.com/online
www.audiosciencereview.com/…introducing-the-phono-cartridge-measurement-library