Notices

October 14, 2025

• Results announcement: The results of the 2025 LRAC Challenge are in! Please see the Results section. Congratulations to the winning teams: teamwzqaq for Track 1, and nju-aalab for Track 2, as well as to all challenge participants! 🎉

October 9, 2025

• Rules update: Added description to the Official Rules regarding the use of challenge submission entries at the 2026 LRAC Workshop and in workshop materials, including on the workshop website. See: here.

October 1, 2025

• Blind test set submissions are closed as of 11:59 pm PST: The test phase has now concluded. Thank you to all participants for their submissions!

September 30, 2025

• Blind test set submissions are open as of 11.59 pm PST: There is a 24 hour window for making test phase submissions on the leaderboard website.

• FAQ updated: Added new entries regarding where to submit the system description paper and whether to include authors’ names and affiliations. See here.

• System Description Paper for Baseline Models Published: The system description paper for the baseline models are now available here.

• Test phase folder structure released: The expected folder structure of the test phase submissions are shared on the leaderboard site: Track1, Track2.

September 29, 2025

• FAQ Updated: Added new entries on accepted templates and content requirements for the system description paper. See: https://lrac.short.gy/faq-system-description-paper

September 22, 2025

• Track2 Baseline Model Released: The .pth file for the Track 2 baseline model is now available here, released under the Creative Commons Attribution-NonCommercial 4.0 License.

• Track2 Baseline results available: Track 2 baseline system objective metric results are now live on the leaderboard for the open test set. Currently these are accessible to participants enrolled in the Track 2 leaderboard. The leaderboard results will become publicly available on October 15, after the public announcement of the test phase results.

September 17, 2025

• Examples for Blind Test Set Released: Representative examples for the blind test set are now available here, along with the associated metadata and license.

September 15, 2025

• Track1 Baseline Model Released: The .pth file for the Track 1 baseline model is now available here, released under the Creative Commons Attribution-NonCommercial 4.0 License.

• Design Spreadsheet Published: An Excel sheet has been released, detailing the Track 1 and Track 2 baseline models. It includes hyperparameters and layer-by-layer calculations of the field of view, computational complexity, and algorithmic latency.

• FAQ updated: Added a new entry explaining how computational complexity and latency of the baseline systems are calculated.

September 10, 2025

• Leaderboard registration benefits: Registering on the leaderboard website allows you to:
  • Enrol your team in challenge track(s) of interest
  • View development phase objective metric scores for the baseline models (note that currently only Track 1 baseline results are available)
  • View development phase results that other participants had chosen to publish to the leaderboard
  • Create your own development phase submissions to the leaderboard
  • Select which of your results to publish to the leaderboard

  • Make final test phase (blind test set) submission

    Create your account today to get the most out of the challenge! Step by step details are being shared with participants via email once their registration request is processed and approved.

• Leaderboard results accessibility:

  • As a reminder, currently the results published on the leaderboard are accessible only to the participants enrolled in a given track. The leaderboard results will become publicly available on October 15, after the public announcement of the test phase results.

September 9, 2025

• Registration deadline passed: Challenge registration has closed. Thank you to all the teams that have registered!

• Leaderboard enrollment glitch: A glitch has been identified and fixed in the leaderboard enrollment process. If you experienced difficulties enrolling in a track on the leaderboard yesterday, please try again. If you experience any difficulties, please contact us at lrac-challenge@cisco.com.

• Registration deadline approaching: Challenge registration requests close today, Sep 9 at 11:59 pm PST. If you’re interested in participating but haven’t submitted the (non-binding) registration request form yet, please do so before the deadline.

• Notices refactored: The notices have been refactored to highlight high level topic first, followed by details.

September 3, 2025

• FAQ updated: Added guidance regarding the treatment of noise and reverberation by Track 1 submissions and in crowdsourced evaluations. See: https://lrac.short.gy/faq-challenge-phases-and-submissions

September 1, 2025

• Leaderboard guidance: Added information to the FAQ page about viewing and publishing results on the leaderboard. See: https://lrac.short.gy/faq-challenge-phases-and-submissions

August 29, 2025

• Computational complexity: Added further clarifications to the FAQ section on how to calculate and report the computational complexity. See: https://lrac.short.gy/faq-latency-compute

• Workshop call for papers: Updated the 2026 LRAC Workshop PDF with paper submission track details: LRAC-Workshop-Call-for-Papers.pdf

• Baseline results available: Track 1 baseline system objective metric results are now live on the leaderboard for the open test set. Currently these are accessible to participants enrolled in the Track 1 leaderboard. The leaderboard results will become publicly available on October 15, after the public announcement of the test phase results.

August 28, 2025

• Baseline training guide: Added README to help you get started with baseline model training: https://github.com/cisco-open/espnet/tree/master/egs2/lrac

August 27, 2025

• Computational complexity: Added clarifications to the FAQ section on how to calculate and report the computational complexity: https://lrac.short.gy/faq-latency-compute

• ICASSP 2026 Satellite Workshops: The complete list of Satellite Workshops is now available on the official ICASSP 2026 website: https://2026.ieeeicassp.org/satellite-workshops

• Paper submissions open: Submit your papers to the 2026 LRAC Workshop through the ICASSP 2026 CMS system: submission link

  • Deadline: October 22, 2025 for the peer-reviewed archival track
  • Publication: Accepted papers will be presented at the workshop and published on IEEE Xplore

August 26, 2025

• Solution types clarified: Updated FAQ with guidance on Solution Types, including bitrate-specific modules and blocks. See: FAQ

• Enhanced documentation: Expanded Baseline model description with detailed information and added Latency Calculation Guidelines for challenge submissions.

• Baseline model recipes published: Recipes for training baseline models are now available in the ESPNet-based repository: https://lrac.short.gy/baseline-repo

• Workshop website launched: The 2026 LRAC Workshop website is now live: https://lrac.short.gy/2026-lrac-workshop

August 19, 2025

• Call for papers: Submit to the LRAC Satellite Workshop at ICASSP 2026: https://lrac.short.gy/workshop-cfp

August 18, 2025

• Open test set released: Download the test data from GitHub. Automated leaderboard integration coming soon. Additional details: https://lrac.short.gy/test-materials

• Language list corrected: Updated Multilingual Librispeech training set languages in the Datasets section. The permitted languages include: English, German, and French only–matching selections in the Urgent Challenge.

• Latency guidance coming: Detailed latency evaluation guidance for submissions is in preparation and will be published on the Challenge website soon.

August 12, 2025

• Website updates: Enhanced FAQ, Participate, and Evaluation sections with clarified and expanded guidance. New Objective Metrics section added to Evaluation page.

August 11, 2025

• Workshop section live: Visit the new workshop section on the challenge website: https://lrac.short.gy/workshop. More details coming soon.

August 10, 2025

• FAQ section launched: Find answers to common questions at: https://lrac.short.gy/faq. Please check back regularly for updates.

August 9, 2025

• Coming next week: Official baseline source code and open test set for development phase. FAQ section launch planned to address common questions. Satellite Workshop details to follow.

August 8, 2025

• Dataset curation details: Updated dataset page with file filtering information for training speech and noise datasets: https://lrac.short.gy/datasets

August 7, 2025

• Data preparation scripts released: Access the complete data generation repository: https://lrac.short.gy/data-gen-repo

August 5, 2025

• Official Rules updated: System description papers now have a minimum 2-page + references requirement (previously fixed 2-page limit). Papers can cover both tracks or be submitted separately for each track. See details: https://lrac.short.gy/final-submission (revisions marked in purple).

July 31, 2025

• Registration now open: Challenge registration and leaderboard website are live! Register here: https://lrac.short.gy/how-to-enter

July 30, 2025

• Workshop accepted: Our ICASSP 2026 Satellite Workshop proposal approved! Date: May 4, 2026. More details coming soon. We look forward to seeing you there!

July 21, 2025

• Official Rules finalized: Complete challenge rules now available: https://lrac.short.gy/rules

July 7, 2025

• Website launched: LRAC Challenge Website and Call for Participation are now live!

June 20, 2025

• Challenge accepted: The 2025 LRAC Challenge has been officially accepted to the IEEE SPS Challenge Program!