Exploring, understanding, and creating FM synthesizer sounds without dedicated music hardware. It is catalogued under Virtual instruments & audio effects on PulseGate.

FM / 6 is a consumer product built for music learners, sound designers, and browser-based musicians.

Is FM / 6 still active?

Unverified. FM / 6 has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

What are alternatives to FM / 6?

Similar projects tracked by PulseGate include Voice Synth, Piano Block, and QSpeakers.

FM / 6 is developed by Sarth Calhoun.

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FM / 6

Name: FM / 6
Author: Sarth Calhoun

bookofsarth.comVirtual instruments & audio effects

FM / 6 is an interactive browser synthesizer with six operators, two on-screen keyboards, editable routing, and envelope controls. It provides guided patches and explanations to help musicians and learners understand how FM sounds are constructed.

FreeWebCloud-managed

Visit bookofsarth.com

Overview

8 features

FM / 6 is a Virtual instruments & audio effects project. Exploring, understanding, and creating FM synthesizer sounds without dedicated music hardware. It is built as a consumer product for music learners, sound designers, and browser-based musicians. FM / 6 is free to use. It ships for the web.

It is developed by Sarth Calhoun. Among its 8 catalogued features are six operators, two keyboards, and starting patches.

Summary written by a language model from the project’s public pages.

Six operators
Two keyboards
Starting patches
Operator routing
Envelope controls
On-screen keys
Computer keyboard input
Interactive sound guide

Built with & integrations

Hosting

Cloudflare

Runs on

BrowserCloud-managed

Detected from

Cloudflare: cf-ray header · cf-cache-status header

Trust & compliance

Verified signals

HTTPSFree tier

Indexing history

What PulseGate has recorded for this listing

Indexed9 Sept · 23:19 UTC
FM / 6 — I made a six-operator browser synth in an evening verified via DEV.to articles
Source: DEV.to articles · Open

Frequently asked questions about FM / 6

What does FM / 6 do?: Exploring, understanding, and creating FM synthesizer sounds without dedicated music hardware. It is catalogued under Virtual instruments & audio effects on PulseGate.
Who is FM / 6 for?: FM / 6 is a consumer product built for music learners, sound designers, and browser-based musicians.
Is FM / 6 free?: Yes — FM / 6 is free to use.
What platforms does FM / 6 run on?: FM / 6 runs on the web.
Is FM / 6 still active?: Unverified. FM / 6 has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
What are alternatives to FM / 6?: Similar projects tracked by PulseGate include Voice Synth, Piano Block, and QSpeakers.Voice Synth Piano Block QSpeakers
Who develops FM / 6?: FM / 6 is developed by Sarth Calhoun.

At a glance

Platforms: Web
Languages: English
First seen: 9 Sept 2026
Built for: music learners, sound designers, and browser-based musicians
Model: B2C
Solves: Exploring, understanding, and creating FM synthesizer sounds without dedicated music hardware.

Developer

Sarth Calhoun

Index record

Indexed: 9 Sept 2026
Lifecycle: Alive
First seen: Sept 2026
Last seen: 9 Sept 2026

Identity audit (13)

Slug: fm-6-i-made-a-six-operator-browser-synth-in-an-evening-bookofsarth-com
Lifecycle state recorded: 9 Sept 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 9 Sept 2026
Timeline basis: Indexed-at chronology (no inferred launch/funding milestones).
Name from: Derived from the project's own page and URL.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model, checked against the page's own declaration.
Last updated: 9 Sept 2026
Canonical URL: https://contraptions.bookofsarth.com/fm6

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