Open source speech codec designed for communications quality speech between 700 and 3200 bit/s. The main application is low bandwidth HF/VHF digital radio.
active 2023-08-18 → 2026-05-23 (UTC)
Activity over time
Daily event counts in the loaded window
Line chart, 1010 days from 2023-08-18 to 2026-05-23. Pushes: 68 total, peak 10 in a day. Pull requests: 30 total, peak 3 in a day. Issues: 62 total, peak 22 in a day. Comments: 111 total, peak 15 in a day. Stars: 220 total, peak 3 in a day.
- Pushes
- Pull requests
- Issues
- Comments
- Stars
Stars, PRs, issues and forks are under-captured in the later part of this window. GH Archive progressively stopped capturing non-push events during 2026 — −95% or worse by the end of the window. Every series here except Pushes fades for that reason, so a decline above reflects the archive, not this repository. Pushes stay reliable throughout, so read them, and the contributor counts derived from them, as the real signal. Data health has the measurements.
Top contributors
Pushes, PRs, issues, reviews and comments — stars and forks excluded, so this is contribution rather than popularity
| Contributor | Contributions | Pushes | PRs | Comments |
|---|---|---|---|---|
| drowe67 | 155 | 49 | 20 | 46 |
| tmiw | 73 | 19 | 3 | 34 |
| jimt | 6 | 0 | 1 | 3 |
| rafael2k | 6 | 0 | 4 | 2 |
| a897456 | 6 | 0 | 0 | 6 |
| DJ2LS | 3 | 0 | 0 | 3 |
| alwinhb | 3 | 0 | 0 | 1 |
| 0815employee | 3 | 0 | 1 | 2 |
| BadDateAlex | 3 | 0 | 0 | 3 |
| AlexanderSchuetz97 | 3 | 0 | 0 | 3 |
| xssfox | 2 | 0 | 0 | 1 |
| pfeatherstone | 2 | 0 | 0 | 2 |
| vertexgamer | 2 | 0 | 0 | 0 |
| l29ah | 1 | 0 | 0 | 1 |
| psylity | 1 | 0 | 1 | 0 |
| duchieu91 | 1 | 0 | 0 | 1 |
| IhorNehrutsa | 1 | 0 | 0 | 1 |
| psommerfeld | 1 | 0 | 0 | 0 |
| Jeffrey-Miller | 1 | 0 | 0 | 1 |
| thepapertraderindia-ux | 1 | 0 | 0 | 0 |
Recent activity
Latest issues, pull requests and releases
- Pull request#74rafael2k2026-03-16 22:11
- Pull request#74rafael2k2026-03-04 08:57
- Issue comment#73rafael2k2026-02-18 21:59Get FREEDV_MODE_FSK_LDPC working with freedv data API and small fix to README_data.md
- Issue#71drowe672026-02-18 21:28350 bit codec vanished!?
- Issue comment#70rafael2k2026-02-17 23:31DATAC1 might be mis documented in README_data.md as having 56 usable bytes when it should be 54?
- Pull request#73rafael2k2026-02-17 22:58
- Pull request#72rafael2k2026-02-13 23:37
- Issue comment#70drowe672025-11-21 22:39DATAC1 might be mis documented in README_data.md as having 56 usable bytes when it should be 54?
- Issue#70xssfox2025-11-12 03:31DATAC1 might be mis documented in README_data.md as having 56 usable bytes when it should be 54?
- Issue comment#69Jeffrey-Miller2025-11-10 06:00Feature Proposal
- Issue#68thepapertraderindia-ux2025-08-20 08:03450bps
- Issue comment#67pfeatherstone2025-08-01 08:33timing error calculation
- Issue comment#67pfeatherstone2025-08-01 08:26timing error calculation
- Issue#67drowe672025-07-31 21:46timing error calculation
- Issue#66drowe672025-07-18 21:20Compiler error on Windows
- Issue#40drowe672025-07-18 21:20WP2025 - static codebook files
- Issue#37drowe672025-07-18 21:20WP2007 - Review Codec 2 Algorithm Description
- Issue#36drowe672025-07-18 21:20WP2010 - Codec 2 Algorithm Unit Tests
- Issue#34drowe672025-07-18 21:20WP2040 - phase.c clean up
- Issue#33drowe672025-07-18 21:20WP2030 - sine.c cleanup
- Issue#32drowe672025-07-18 21:20WP2020 - NLP cleanup
- Issue#29drowe672025-07-18 21:20WP4000 - COTS Radio Tuning
- Issue#28drowe672025-07-18 21:20WP1000 - Top Level Plan
- Issue#25drowe672025-07-18 21:20WP2060 - Subjective Testing
- Issue#24drowe672025-07-18 21:20WP2050 - Subjective Testing System
Totals cover only the window loaded into ClickHouse and count events, not GitHub's lifetime totals — 220 stars here means stars gained during the window, not the repo's star count.