H.323 CODECS FOR CLIENT-SERVER VIDEO CONFERENCING

Sigpro was contracted by a major computer manufacturer to jump-start its internal team on audio codecs for video conferencing using its proprietary CPU architecture.  Sigpro was chartered to develop the entire suite of H.323 / 324 audio codecs for use in both a central server and a thin-client. Technology transfer of the intellectual property included teaching the internal team the critical issues related to linear predictive coding.

Customer Requirement: Software development of audio codecs for H.323/H.324 video conferencing client-server architecture:

• Timely delivery of source code to roll out set-top box reference design.
  
• Low royalty license to drive mass-market quantities of reference design.
  
• Software source must be portable to RISC/DSP-based thin clients and high-end server platforms.

Customer also needed in-house training on signal processing elements for audio compression, specifically focusing on the complex Code-Excited Linear Predictors.

Sigpro Approach

• Produce optimized ANSI C source code for future porting to a variety of specialized platforms.
  
• Deliver software source under a fixed-price development contract, with a no-royalty license.
  
• Prepare and deliver on-site technical training seminars on audio compression for customer engineering staff. Create on-line tutorial lessons using MATLAB implementations of codecs.