Press release

08 October 1998

Ensigma Ltd Develops Enhanced Variable Rate codec Software on DSP Group’s OAKDSPCORE

Share on linkedin
Share on twitter
Share on facebook
Share on reddit
Share on digg
Share on email

Ensigma announced today the completion of its Enhanced Variable Rate codec (EVRC) IS-127 implementation for DSP Group’s OakDSPCore . The EVRC codec is used in the IS-95 CDMA system offering enhanced speech quality compared to the original 8k QCELP vocoder. EVRC is also to be used in the Japanese W-CDMA and U.S. CDMA-2000 systems. Clifford Parris, head of the coding group at Ensigma, said "We are the first company to be offering an EVRC solution". The company said the excellent development tools offer a faster time to market compared to rival DSPs.

"We are pleased to have Ensigma as a developer and software provider for our OakDSPCore," said Gideon Wertheizer, Vice President of Corporate Marketing for DSP Group. "Ensigma’s EVRC solution allows OEMs to bring CDMA systems to the market quickly," Wertheizer continued.

The following summarises Ensigma’s EVRC offering for the OakDSPCore:

Features and Benefits:

  • Conforms to OakDSPCore C environment
  • Full test harness supplied for OakDSPCore simulator
  • Full documentation
  • Channel post filtering
  • Noise cancellation
  • Multiple channels

The Ensigma implementation is fully compliant with TIA/EIA bit-exact specifications:

  • IS-127
  • IS-718

Processor and System Requirements:

  • Program memory (ROM) – 14952 words
  • Data memory (ROM) – 7334 words
  • Data memory (XRAM) – 1630 words (permanent per channel) plus
    1899 words temporary (including I/O buffers)
  • Data memory (YRAM) – 504 words (temporary)
  • Encoder MIPS – 20.79 (worst case frame measured over IS-718
    bit exact test vector suite)
  • Decoder MIPS – 2.96 (worst case frame measured over IS-718 bit
    exact test vector suite)

The company said that the OakDSPCore has proven itself as the DSP of choice for mobile communications offering a compact and efficient solution. The company also said that further optimisation of the software will be ongoing throughout 1998 including investigation of non bit exact solutions.

Media contacts

If you have any enquiries regarding any of our news or press release items, please contact:

United Kingdom

david.harold@imgtec.com
Tel: +44 (0)1923 260 511

jo.ashford@imgtec.com
Tel: +44 (0)1923 260 511

Related blog articles

Harry Potter: Wizards Unite on PowerVR review

Harry Potter Wizards Unite is the Augmented Reality game of the moment and, arguably, the best one available right now, and it’s looking great on Power VR-based phones.

Introducing our all new PowerVR Developer Documentation website

We’re really excited to announce some big news about our PowerVR developer documentation. We’ve taken our incredibly useful, and very extensive documentation set and turned it into something much more modern and accessible in the form of a new website.

Oddmar

Three of the Best: Android Platform Games

Want to game on the move? You no longer need a handheld gaming system. Even today’s budget phones will do the job. We’ve been trying out some of the latest and greatest Android games on a relatively affordable handset – the Honor 8A.

Stay up-to-date with Imagination

Sign up to receive the latest news and product updates from Imagination straight to your inbox.

  • This field is for validation purposes and should be left unchanged.