Synopsys Releases Bluetooth LE Audio
Codec for Audio and Voice Apps
January 7, 2020
released their Bluetooth LE Audio LC3 Codec optimized for Synopsys'
DesignWare ARC EM DSP and HS DSP processor IP. The LC3 codec is an
important feature of Bluetooth LE Audio, the soon-to-be-released
next-generation audio standard defined by the Bluetooth Special Interest
Group (SIG) that enables system-on-chip (SoC) designers to efficiently
implement high-quality voice and audio streaming in a wide range of
applications, including mobile, wearables, and home automation. The LC3
codec for ARC processors is based on an implementation by Fraunhofer IIS
that is designed to meet Bluetooth SIG requirements. The new LC3 codec,
running on ARC EM and HS DSP processors, allows designers to rapidly
integrate a complete, pre-verified hardware and software solution for
voice and speech processing into Bluetooth-enabled devices requiring
minimal energy consumption.
"The rapid growth of wearable devices requiring high-quality Bluetooth
audio streaming is driving the need for power-efficient processor IP
with DSP capabilities that can meet intensive computation requirements
of voice and audio applications. Those applications require an optimized
codec providing state-of-the art voice and audio quality at minimum
computational complexity. The LC3 codec is designed exactly like that,"
said Manfred Lutzky, head of Audio for Communications at Fraunhofer IIS.
"By porting the LC3 codec to the DSP-enhanced ARC processors, Synopsys
is enabling customers to quickly implement LC3 codec functionality in
their low-power SoCs. We look forward to continuing our collaboration
with Synopsys so that the LC3 codec for ARC processors continues to
incorporate the latest updates."
"The fact that the LC3 codec can provide very high-quality audio even at
low bit rates makes it a key feature of the upcoming LE Audio standard,"
said Mark Powell, chief executive officer of the Bluetooth Special
Interest Group (SIG). "We are pleased to see member companies working on
implementations of the LC3 codec optimized for various processor
32-bit DesignWare ARC EM and HS DSP processors are based on the scalable
ARCv2DSP Instruction Set Architecture (ISA) and integrate RISC and DSP
capabilities for a flexible processing architecture. The ARC EM DSP
processors offer ultra-low power and industry-leading performance
efficiency while the multi-core-capable ARC HS DSP processors provide a
unique combination of high-performance control and high-efficiency
digital signal processing. All ARC processors are supported by the ARC
MetaWare Development Toolkit, which includes a rich library of DSP
functions to allow software engineers to rapidly implement algorithms
from standard DSP building blocks. In addition, ARC processors and the
LC3 codec can be combined with Synopsys' Bluetooth 5.1-compliant
DesignWare Bluetooth Low Energy IP to deliver power-efficient,
high-quality wireless audio capability for smart IoT and other
"Optimizing the LC3 codec for DesignWare ARC Processors demonstrates
Synopsys' continued investment in providing customers with a robust
portfolio of audio codecs for a wide range of SoC designs," said John
Koeter, senior vice president of marketing for IP at Synopsys. "Designed
to process high-quality audio streams and deliver superior sound, the
LC3 codec for ARC processors provides designers with a certified codec
that reduces the integration time and testing required to deliver
superior quality audio for Bluetooth streaming applications."
Availability and Resources
The Bluetooth LC3 codec is available now from Synopsys with DSP-enhanced
ARC EMxD and HS4xD processors.