The CHiME-10 ECHI-2 Preview Dataset contains multi-speaker conversation recordings in cafeteria-like noise conditions collected over hearing aid and smart glasses devices under natural conversational settings. Due to the sensitive and identifiable nature of the data, its use is subject to the following terms and conditions.

By accessing or using the CHiME-10 ECHI-2 Preview Dataset, you acknowledge that you have read, understood, and agreed to comply with the terms below.

1. License Rights and Permitted Use

a. Grant of Rights

You are granted a non-exclusive, non-transferable, worldwide, royalty-free license to use the CHiME-10 ECHI-2 Preview Dataset solely for:

Academic and educational purposes
Algorithm development and benchmarking
Publication of models, visualizations, or results, provided proper attribution is given (see Section 3)

b. Prohibited Use

You may not, without prior written permission:

Redistribute or publicly repost any part of the raw dataset (video, audio, transcripts, face landmarks) with the exception of for purposes of showcasing your results achieved on the Dataset with proper attribution (see below).
Upload the dataset to public repositories, cloud platforms, or third-party hosting services
Create applications or services that provide access to the dataset for others

2. Access, Sharing, and Distribution

a. Access Requirements

Access is granted only upon:

Submission of a signed Data Use Agreement
Verification and approval by the CHiME-10 ECHI-2 Challenge Organizers

b. Redistribution Policy

Redistribution of the dataset or identifiable components to third parties is strictly prohibited. This includes:

Raw data (e.g., audio, tracking data, metadata)
Reversible or personally identifiable processed data (e.g., biometric embeddings)

c. Sharing of Derived Works

You may share trained models or results only if:

They do not expose raw or identifiable data
They are not reversible to reconstruct original data
You provide proper attribution as described in Section 3

3. Attribution and Citation

If you use the CHiME-10 ECHI-2 Preview Dataset in any publication, presentation, or shared work, you must include the following citation:

For citation instructions see:
https://www.chimechallenge.org/current/task2/index

You must also:

Link to the dataset’s official access page
Acknowledge the CHiME-10 ECHI-2 Challenge Organizers as the data providers

4. Privacy, Ethics, and Compliance

You agree to:

Not attempt to re-identify individuals
Not use the dataset for biometric surveillance, profiling, or other unethical purposes
Comply with all relevant privacy and data protection laws, including the General Data Protection Regulation (GDPR) where applicable
Conduct research using this dataset in accordance with your institution's ethical standards or Institutional Review Board (IRB) requirements

5. Data Security

You agree to:

Store the dataset in secure, access-controlled environments
Prevent unauthorized access, sharing, or duplication
Refrain from uploading the dataset to public cloud platforms or storage services (e.g., Google Drive, Dropbox, GitHub)

6. Termination and Enforcement

Any violation of this agreement may result in immediate termination of access
Upon request or termination, you must permanently delete all copies of the dataset
You must report any known or suspected misuse within 48 hours to:
echichallenge@gmail.com

7. Disclaimer of Warranty

The CHiME-10 ECHI-2 Preview Dataset is provided "as is", without warranties of any kind. The CHiME-10 ECHI-2 Challenge Organizers expressly disclaim:

Any warranties of title or non-infringement
Implied warranties of merchantability or fitness for a particular purpose
Any guarantee of dataset accuracy, quality, or usefulness

8. Limitation of Liability

To the fullest extent allowed by law, the CHiME-10 ECHI-2 Challenge Organizers shall not be liable for any:

Indirect, incidental, or consequential damages
Losses related to use or inability to use the dataset
Claims resulting from third-party use or interpretation of your derivative works

9. Contact and Licensing Requests

For questions regarding this agreement or to inquire about commercial licensing, please contact:
📧 echichallenge@gmail.com

This CHiME-10 ECHI-2 Preview dataset is intended for use within the CHiME-10 ECHI-2 task development team. The fully public version will be available in February 2027 when the task is ready for public release.

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