View Full Version : Tensilica Debuts Digital Radio Mondiale Decoder for HiFi 2 Audio DSP

31-03-2009, 05:20
Posted by EDA Geek News Staff in DSPs on Monday, March 30, 2009

Tensilica,® Inc. announced the immediate availability of the Digital Radio
Mondiale (DRM) decoder on its popular HiFi 2 Audio DSP, which can be easily
integrated into system-on-chip (SOC) designs. The implementation is based on software developed by Dolby and has passed Dolby's certification procedure. Now designers of digital radio systems can use one processor core - Tensilica's HiFi 2 Audio DSP - to run all decoders required throughout the world for digital radio, enabling a universal worldwide digital radio
receiver. Tensilica's HiFi 2 Audio DSP already has support for four other
terrestrial and satellite standards: DAB, DAB+, HD Radio, and XM Radio.

DRM can deliver FM-comparable sound quality on frequencies below 30 MHz (the bands currently reserved for AM broadcasting) for very long-distance signal propagation. It has the advantage of being able to fit more channels into a given amount of spectrum with higher quality because it employs digital
audio compression rather than amplitude modulation techniques. DRM has been approved by the IEC (International Electrotechnical Commission), and the ITU (International Telecommunications Union) has approved its use throughout most of the world. Approval for ITU region 2 (North and South America and the Pacific) is pending. More detail on DRM is available at www.drm.org.

"In today's economy, manufacturers don't have the luxury of developing
different radios for different geographic markets," stated Larry Przywara,
Tensilica's director of mobile multimedia. "Now single SOCs, including the
HiFi 2 Audio DSP, can be compatible with all global digital radio standards.
We chose Dolby's implementation of DRM because of our previous close
collaboration with them on HE AAC and derivative standards including DAB+
and T-DMB. Two Tensilica customers have already licensed the HiFi 2 DRM

"Both India's and Russia's regulators just recently have taken serious steps
towards digital radio and mandated DRM due to its advantages of wider
geographic coverage in the sub 30 MHz spectrum. With these countries gaining momentum, the arrival of Tensilica's solution appears to be just in time for the marketplace," stated Toni Fiedler, senior manager, business development, Dolby Laboratories. "Tensilica's HiFi 2 Audio DSP will enable development of low cost DRM receivers by leveraging the aggregate investment in all the digital radio standards for highly integrated multi-standard SOCs. HiFi 2 provides a proven, approved, drop-in audio solution."

Because the HiFi 2 Audio DSP is based on Tensilica's programmable Xtensa®
processor, it provides chip designers with one hardware platform that can be
used for multiple audio standards. Tensilica, its customers, and its
partners have ported over 50 software packages to the HiFi 2 Audio DSP, so
designers can pick the software they need for the application. As the market
evolves and new standards are defined, they can be easily and quickly ported
to the HiFi 2 Audio DSP, thereby "future proofing" the chip design. The HiFi
2 Audio DSP has been designed into chips for portable devices by five of the
top 10 semiconductor companies.

The DRM decoder is available now from Tensilica.

About Tensilica
Tensilica, Inc. is the recognized leader in customizable dataplane
processors. Dataplane Processor Units (DPUs) consist of performance
intensive DSP (audio, video, imaging, and baseband signal processing) and
embedded RISC processing functions (security, networking, and deeply
embedded control). The automated design tools behind all of Tensilica's
application specific processor cores enable rapid customization to meet
specific dataplane performance targets. Tensilica's DSPs and processors
power top tier semiconductor companies, innovative start-ups, and system
OEMs for high-volume products including mobile phones, consumer electronics
devices (including portable media players, digital TV, and broadband set top
boxes), computers, and storage, networking and communications equipment.
Tensilica and Xtensa are registered trademarks belonging to Tensilica Inc.