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SILK: Super Wideband Audio Codec

This page contains information about SILK, the preferred audio codec for Skype-to-Skype calls. Here you'll find all SILK-related news, public information, downloads, links, etc. Please come back regularly to find out what's new.

Skype has contributed SILK source code to the Internet Engineering Task Force working group: http://tools.ietf.org/html/draft-vos-silk-02

SDK Download

Copyright in this software is licensed under the terms set out in the source code:

Skype Limited hereby separately grants to you a license under its patents to use the SILK software made available as a download below for internal evaluation and testing purposes only. This license expressly excludes the use of the SILK software for distribution or use in any commercial product or service.

Click the following link to download the SILK SDK (ver. 1.0.8):

I have read and accept the above license terms (click starts download)

SILK Patent License

To use the SILK software for any purpose other than internal evaluation and testing, you are required to accept the SILK Patent License. You can view and accept the SILK Patent License here:

View and accept the SILK Patent License

SILK Documentation

In this section, you will find relevant documentation about SILK, the specification and format, and audio samples.

Bug Tracker (Jira) and Support Requests

We use Jira to track bugs and support requests. Click "signup" the first time you access Jira and use your Skype Name and password to create a Jira account. If you don't yet have a Skype Name, download the Skype software at www.skype.com and open an account. If you have an account but have forgotten your Skype Name and/or password, visit https://support.skype.com.

To create an issue:

Or send an email with "SILK Issue Report" in the subject line to SILKSupport@skype.net to report an issue.

Updates and Communication

If you like to receive our newsletter and information about updates, please send an email with "SILK Registration" in the subject line to SILKSupport@skype.net.

History

  • July 18, 2011 - Release of SILK SDK version 1.0.8. Among various improvements and bug fixes to the floating- and fixed point code, the new SDK includes optimized code for ARM, including ARM NEON, and support for MIPS. The new SDK is fully backwards compatible with older versions of the SDK.
  • March 8, 2010 - Updated SILK codec description draft including source code was submitted to IETF
  • July 6, 2009 - SILK codec description and payload format drafts were submitted to IETF
  • March 4, 2009 - Jonathan Christensen, GM Audio & Video, announced the availability of the SILK codec for license by third party partners during his eComm keynote speech

Contact

If you would like to contact us, please send an email to SILKSupport@skype.net.

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