The IoT has sparked a love affair with smart, connected things designed to bring more convenience,
ease, efficiency and safety to our lives. While we appreciate the added benefits of our
IoT-connected thermostats, doorbell cameras and wearable devices, there is still great opportunity
to make these ‘things’ smarter ... more intuitive, more tuned to how humans actually communicate,
more like our Alexa, Siri or Google Assistant-enabled smart speakers.
Voice – human speech – is the most natural HMI. We want voice control, and crave more of it, along
with greater speed and accuracy. Why tediously type the title of a Netflix movie on your smart TV
interface when you can simply talk to a handheld remote to find your favorite movie? Why get up
from the couch and walk across the room to dim the lights when you can ask your voice-enabled
light switch for help? While touch interfaces aren’t going away anytime soon, we’re seeing more
use cases for voice as an easier way to control devices and systems in our homes, offices, cars
and public spaces. Even more so during these times of COVID-19.
According to an ABI Research, by 2025, approximately 14% of all smart home products will be
conversational AI enabled, and will grow more than 5x faster than the overall smart home market.
Key growth drivers include the growing consumer demand for smart devices, the proliferation of
voice-enabled devices and the rise of voice-enabled automotive infotainment systems. However, the
cost and expertise of adding voice enablement to smart devices is a major factor when designing
these types of devices.
To bring affordable voice control to more and more devices, NXP Semiconductors is committed to
reducing the design effort for our customers to further help reduce the cost and complexity of the
overall system solutions. Our goal is to help developers everywhere add voice control to almost
everything, from consumer electronics and home control applications to industrial and automotive
applications. The use cases are endless. The key is to offer a comprehensive portfolio of silicon-
and software-based voice solutions scaling across NXP’s EdgeVerse™ processing continuum. We have added Retune DSP, a leading provider of digital signal processing (DSP) software solutions for voice
control and communication, to our voice portfolio.
Headquartered in the greater Copenhagen area, Retune DSP provides highly accurate,
small-footprint, low-power voice processing solutions that are popular with a growing customer
base. We believe Retune offers the right DSP software technology to help NXP reach the next level
in delivering high-performance voice control solutions to customers worldwide.
Retune DSP is Now Part of NXP
Renowned for the quality of their DSP software and algorithms, Retune DSP is one of the best voice
technology companies in today’s market. The company has built a strong reputation and loyal
customer base as a one-stop shop and full-service software supplier delivering a complete voice
control stack including multi-microphone beamforming, multi-channel acoustic echo cancellation and
When developers required extremely high levels of detection accuracy within tiny model sizes,
Retune DSP stepped up and worked closely with customers to deliver the right voice solution for
their application needs. Retune DSP’s three voice DSP software products will merge with NXP’s
current voice solutions portfolio. This includes:
Hands-Free Telephony Suite:
Conversa is a high-performance, multi-microphone, full-duplex voice processing software suite
that provides total control of uplink and downlink audio. Conversa delivers exceptional sound
quality for hands-free speech processing applications including Bluetooth speakerphones,
conference phones, headphones and headsets, true wireless stereo (TWS) earsets and automotive
Voice Control Audio Front End Suite:
VoiceSeeker is a state-of-the-art multi-microphone voice control audio front-end DSP solution
offering high-performance beamforming and multi-channel acoustic echo cancellation to deliver
exceptional trigger word detection and payload accuracy. Retune’s ultra-efficient algorithm can
simultaneously process up to 24 independent acoustic echo cancellers per core, unlocking the
potential of voice control in multi-channel home theater environments. Effective beyond 10
meters, VoiceSeeker’s beamformer technology is ideal for far-field voice control applications.
VoiceSpot is a highly accurate wake-word engine leveraging Retune’s proprietary ML-based pattern
recognition technology. Retune’s high-performance voice triggers have ultra-small memory
footprints, requiring fewer MIPS than competing wake-word engines. The combination of VoiceSpot
and VoiceSeeker software provides a complete front-end voice control solution, enabling
developers to move quickly through the software integration process. VoiceSpot also supports
customer-defined voice trigger words or phrases.
In Tune with NXP’s Edge Processing Continuum
Retune’s DSP software is an ideal fit for our processor continuum – complementing the broad
spectrum of voice control solutions offered by NXP and our voice ecosystem partners. We believe
this strategic acquisition will complement the NXP brewed voice intelligent technology (VIT)
wake-word engine with its audio front end, bringing scale and new market opportunities to Retune’s
market-proven voice processing, beamforming, acoustic echo cancellation and wake-word engine
NXP offers a broad range of solutions for adding voice control directly to any device. From
flexible implementations to turnkey solutions, customers can choose the processing platform that
meets their application needs and BOM cost target and can easily move up the edge processing
continuum to larger memory options, more powerful Arm® cores, integrated DSPs and
additional on-chip accelerator and security options.
To accelerate time to market, we provide comprehensive development environments including our
popular MCUXpresso SDK and fully functional example applications enabling fast, easy evaluation.
We also offer powerful ML technologies for customers developing in-house voice applications.
Additional specialized solutions are available from NXP’s leading front-end and voice recognition
With the combination of Retune’s high-performance DSP software and NXP’s broad customer base,
global footprint and scale, we are well-positioned to deliver breakthrough voice solutions to more
customers through our combined R&D, sales force and customer support teams.
“Hey NXP, what’s next?”
Discover the full range of NXP’s comprehensive voice solutions at