HackerReposA FIELD GUIDE TO OPEN SOURCE
ProSponsor the shelf♧ 0
← Back to top all-time
joelanders
reflecticon-224
C++2026–2026
joelanders / reflecticon-224

reflecticon-224

Emulations of the Lexicon 224, 224x, and 224xl reverb units. Web demo and JUCE app/plugins.

2Distinct people
2Mentions
0Explicit recommenders
73GitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

Emulations of the Lexicon 224, 224x, and 224xl reverb units. Web demo and JUCE app/plugins.

GitHub

Where it is used

No documented product use was verified in the last source check.

What people are saying

No recommendation phrase was found in the indexed comments.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

No other repository is repeatedly linked in the same discussions.

This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 5:04:57 PM UTC.

Mentions over time

HN mentions by 3-hour interval2 dated mentions

Observed mentions: 2026-10-15 23:01:33 UTC to 2026-10-18 19:37:05 UTC.

012026-10-15 21:00:00 UTC to 2026-10-16 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 commentsOct 15, 21:002026-10-16 00:00:00 UTC to 2026-10-16 03:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-10-16 03:00:00 UTC to 2026-10-16 06:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-10-16 06:00:00 UTC to 2026-10-16 09:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-10-16 09:00:00 UTC to 2026-10-16 12:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-10-16 12:00:00 UTC to 2026-10-16 15:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-10-16 15:00:00 UTC to 2026-10-16 18:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-10-16 18:00:00 UTC to 2026-10-16 21:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-10-16 21:00:00 UTC to 2026-10-17 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-10-17 00:00:00 UTC to 2026-10-17 03:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-10-17 03:00:00 UTC to 2026-10-17 06:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-10-17 06:00:00 UTC to 2026-10-17 09:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 commentsOct 17, 06:002026-10-17 09:00:00 UTC to 2026-10-17 12:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-10-17 12:00:00 UTC to 2026-10-17 15:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-10-17 15:00:00 UTC to 2026-10-17 18:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-10-17 18:00:00 UTC to 2026-10-17 21:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-10-17 21:00:00 UTC to 2026-10-18 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-10-18 00:00:00 UTC to 2026-10-18 03:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-10-18 03:00:00 UTC to 2026-10-18 06:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-10-18 06:00:00 UTC to 2026-10-18 09:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-10-18 09:00:00 UTC to 2026-10-18 12:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-10-18 12:00:00 UTC to 2026-10-18 15:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-10-18 15:00:00 UTC to 2026-10-18 18:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-10-18 18:00:00 UTC to 2026-10-18 21:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 commentsOct 18, 18:00

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
Oct 15, 21:002026-10-15 21:00:00 UTC2026-10-16 00:00:00 UTC101
Oct 16, 00:002026-10-16 00:00:00 UTC2026-10-16 03:00:00 UTC000
Oct 16, 03:002026-10-16 03:00:00 UTC2026-10-16 06:00:00 UTC000
Oct 16, 06:002026-10-16 06:00:00 UTC2026-10-16 09:00:00 UTC000
Oct 16, 09:002026-10-16 09:00:00 UTC2026-10-16 12:00:00 UTC000
Oct 16, 12:002026-10-16 12:00:00 UTC2026-10-16 15:00:00 UTC000
Oct 16, 15:002026-10-16 15:00:00 UTC2026-10-16 18:00:00 UTC000
Oct 16, 18:002026-10-16 18:00:00 UTC2026-10-16 21:00:00 UTC000
Oct 16, 21:002026-10-16 21:00:00 UTC2026-10-17 00:00:00 UTC000
Oct 17, 00:002026-10-17 00:00:00 UTC2026-10-17 03:00:00 UTC000
Oct 17, 03:002026-10-17 03:00:00 UTC2026-10-17 06:00:00 UTC000
Oct 17, 06:002026-10-17 06:00:00 UTC2026-10-17 09:00:00 UTC000
Oct 17, 09:002026-10-17 09:00:00 UTC2026-10-17 12:00:00 UTC000
Oct 17, 12:002026-10-17 12:00:00 UTC2026-10-17 15:00:00 UTC000
Oct 17, 15:002026-10-17 15:00:00 UTC2026-10-17 18:00:00 UTC000
Oct 17, 18:002026-10-17 18:00:00 UTC2026-10-17 21:00:00 UTC000
Oct 17, 21:002026-10-17 21:00:00 UTC2026-10-18 00:00:00 UTC000
Oct 18, 00:002026-10-18 00:00:00 UTC2026-10-18 03:00:00 UTC000
Oct 18, 03:002026-10-18 03:00:00 UTC2026-10-18 06:00:00 UTC000
Oct 18, 06:002026-10-18 06:00:00 UTC2026-10-18 09:00:00 UTC000
Oct 18, 09:002026-10-18 09:00:00 UTC2026-10-18 12:00:00 UTC000
Oct 18, 12:002026-10-18 12:00:00 UTC2026-10-18 15:00:00 UTC000
Oct 18, 15:002026-10-18 15:00:00 UTC2026-10-18 18:00:00 UTC000
Oct 18, 18:002026-10-18 18:00:00 UTC2026-10-18 21:00:00 UTC101

What Hacker News says

2 sources
For people looking for the Lexicon 224 which supposedly is on GitHub, here are two possible links: https://github.com/joelanders/reflecticon-224 This one needs actual 224 ROMs to run, but we also have... https://github.com/filipeborato/borato-224 The second one is an 8-line FDN. While the actual 224 used “circle 8” algorithms instead of FDNs (it was Eventide who started using FDNs for reverberation) one can get amazing reverbs from a FDN, e.g. Valhalla Supermassive is a 16-line FDN where the 16 delay line amounts are the only thing that changes between algorithms. I myself have made a good sounding 4-line FDN reverb, and 8 lines was used in one of FreeVerb’s algorithms.
In Using AI to reverse engineer hardware
I'm guessing the Lexicon was mine: https://github.com/joelanders/reflecticon-224 It was a fun project because it predates DSP chips by a couple years (1978). So there's an 8080 host driving some DSP boards made out of 7400 series chips. Bio of the designer with a photo of him prototyping it: https://www.davidgriesinger.com/biographies/ I haven't written it up yet, that part is still hard :) I paid someone on Upwork to trace the schematics into KiCad. Had LLM agents turn those into Verilog models. Lots of little mistakes had to be found and fixed at this point, it took months... It seems like agents are a lot better at transcribing and grokking schematics now compared to 6 months ago, so it might be much easier now. Agree that consequences for the future seem depressing...
In Using AI to reverse engineer hardware

MAKE YOURSELF AT HOME

A few shortcuts

/
Search the collection
?
Open this guide
Esc
Close dialogs and navigation

Your saved repositories and interests stay in this browser.