Following the release of the HW-S800B Ultra Slim Soundbar for Samsung’s QLED TV line-up, which was unveiled earlier this year at CES, Samsung Newsroom spoke to Ema Souza Blanes at Audio Lab of Samsung Research America. She is the person behind the process for product validation and research that includes countless listening tests, all of which are conducted to deliver the best possible immersive viewing experiences with the finest sound.

▲ Ema Souza Blanes at Audio Lab of Samsung Research America

Q: Briefly tell us about yourself and your role in the Samsung Audio Lab.

I am a French audio engineer, and after graduating from the engineering school Arts et Métiers ParisTech (ENSAM) and the Paris-Saclay University, I joined the Samsung Research America’s Audio Lab in Valencia, California. My role with the Audio Lab is to run listening tests for product validation and overall research purposes.

Q: What is a new or recent trend happening in the soundbar industry?

Immersion is a topical subject in soundbar development, with the inclusion of more advanced audio technologies such as Dolby Atmos in home audio. Soundbars have also naturally followed the TV design trend with the intent of blending into the home décor with a sleek and discreet build. Though, despite these new slim designs, sound quality and immersion yet remain at the heart of soundbar development.

Q: Samsung has recently released the ultra-slim soundbar HW-S800B. What were some of the primary objectives for this model?

The design process of the HW-S800B was dedicated to combining all aspects of these recent trends into one product. We aimed to develop a soundbar that blends seamlessly with discreet screens such as The Frame, which challenged us when it came to customization and optimization due to its slim design.

▲ HW-S800B

Q:. The soundbar’s depth and height are 1.6” x 1.5”, which is a difficult size in which to include all amplifiers and multi-channel speakers. Can you describe some of the challenges you faced during the development process?

Most soundbars in the market that are designed to be slim or small typically have a weaker integration of the subwoofer to the soundbar. The result is a colored sound, especially when it comes to voices. The challenge was to avoid this effect and to ensure that voices are maintained in the center of the sound field. This required custom soundbar transducers and a design capable of low crossover frequency to the subwoofer.

Q: We noticed that the subwoofer appears different from past models. Can you elaborate on this difference?

Most subwoofers feature a port to enhance the bass response. Since the HW-S800B’s subwoofer has a smaller enclosure which limits the port size, we recognized that this would cause turbulent air motion, resulting in distortion and less bass. This constraint was addressed by designing a custom passive radiator in place of a port and a long-excursion 6.5” woofer that is able to displace as much air as a larger woofer.

Q: Similar to other premium Samsung soundbars, this model features a wireless connection between the soundbar and TV along with Dolby Atmos sound technology. Why should consumers want these capabilities?

Samsung’s 2022 soundbars come with Wireless Dolby Atmos connectivity, a wireless Smart TV-to-soundbar connection in which both the screen and soundbar speakers deliver an incredible audio experience with no distracting cables. It allows for smoother on-wall mounting setups by minimizing the number of visible cables. Nobody wants their homes cluttered or disorganized, and we are living in a time, in which more consumers are eyeing products that perfectly blend their sophisticated, personal style in and out of the home with technological innovation for a better, connected experience. I believe our soundbars exemplify this desire that we’re seeing in the consumer electronics industry.

Q: Samsung’s Q-Symphony sound technology has also significantly improved in the past year. What are some of the upgrades over the previous version?

In the 2021 TV models, Q-Symphony combined the power of the top speakers and the soundbar. The new Q-Symphony enhances the surround sound and feeling of immersion through channel separation technology. This enables the soundbar and TV speakers to work together with all the speakers on the TVs, including the top, bottom and side speakers, providing for an expansive, powerful soundscape.

Q: Is there anything else we should know about the Audio Lab and your work?

Running listening tests is crucial to ensure the quality of our products. At Samsung, we work closely with our skilled listeners in various and rigorous listening tests where they give their opinion on our products including the comparison between our previous models. The HW-S800B is no exception and showed compelling results while also competing with much larger soundbars.

▲ Samsung Research America’s Audio Lab

¹ Samsung Research, acting as Samsung Electronics’ advanced R&D hub, leads the development of future technologies for the company’s Device eXperience (DX) Division.

Allan Devantier, Audio Lab Head, Samsung Research America

Devantier started working for Samsung in October of 2013. By January of 2014, Samsung had acquired lab space and recruited four staff members, and by October of that year the staff had grown to number 10 engineers and research scientists and the Audio Lab had been made fully functional. From there, the lab was ready to begin working towards its mandate of ‘taking Samsung’s audio technology to the top of the industry.’

Devantier says that “The first product we worked on was the Radiant 360 loudspeaker – it was actually the first mass-market speaker to feature 360-degree sound. We were the industry leader, and now 360-degree speakers have grown very popular in the market.”

Evolutionary Change

Cut to the present, when Samsung’s LA Audio Lab is staffed by more than 20 people with over 300 collective years of experience in the audio field between them. Eleven members of the team hold Master’s or Ph.D. degrees in audio technology, while eight are both engineers and musicians who continue to play in bands. The lab also collaborates extensively with Samsung’s audio engineering teams in Korea.

“Our focus starts at the ear of the listener,” Devantier explains, “then expands out to the listening environment – the transducers (woofers and tweeters), amplifiers, and digital signal processors (DSPs).” And this emphasis has led to a steady stream of important contributions coming out of the lab. Whereas, in 2014, industry publications awarded Samsung’s Soundbar solutions a rating of three-and-a-half stars out of five, by 2019 the average score for Samsung Soundbars had been lifted to four-and-a-half stars. What’s more, in 2019 the HW-Q90R premium Soundbar model received a perfect five-star rating from a number of industry publications. In addition to improvements in the pure audio sphere, the Samsung Audio Lab has contributed to remarkable advancements in TV sound quality as well.

The Samsung Audio Lab has proven its ability to discern changes in the audio market and act upon them swiftly, as is demonstrated by the nature of its recent innovations. The Q-Symphony solution announced at this year’s CES enables a TV equipped with a Soundbar to provide surround sound that closely reproduces the spatial feeling of original sound fields. Devantier explains that Q-Symphony “uses the top-firing speakers in the TV to improve envelopment and immersion.”

Another example of this cutting-edge innovation is Samsung’s OTS (Object Tracking Sound) technology. To improve upon Soundbar technology that allows sound to be delivered in fixed directions, the lab developed TVs that incorporate speakers not just on the bottom and sides of the screen, but in the top left and right sections as well. This allows OTS technology to make use of deep learning that can recognize what kind of content is being displayed on the screen and deliver multichannel sound accordingly. Thus, users can enjoy actual, physical surround sound that is not only immersive but is specifically tailored to whatever they are watching at the time.

What’s more, in 2020 Samsung’s Q-Symphony and OTS technologies are coming together to truly maximize the potential of both solutions. While OTS delivers multichannel surround sound through the TV speakers, Q-Symphony makes the TV-speaker-Soundbar combination possible, enabling the TV’s speakers to provide rich, lively surround sound while the Soundbar delivers powerful, absorbing bass.

Taking Audio into the Future

The inception of AI is set to reshape the audio industry, and Samsung is working to anticipate the changes it will bring about. Asked to outline what he sees as AI’s role in the audio industry, Devantier says, “I think we can use AI to help our loudspeakers play louder, with more perceived bass and less perceived distortion. AI will also help make old recordings sound better and allow our loudspeakers to adapt to different listening environments.”

Another way in which AI is empowering future solutions is by enabling features like Active Voice Amplifier (AVA). Samsung’s AVA feature makes it possible for the TV to recognize the audiovisual space environment and provide sound that is optimized not only for the content being displayed on the screen, but also for the viewing space that the consumer is in. In 2020, sensors embedded in QLED solutions will make optimized viewing possible, even in rooms with high levels of noise. For instance, if a user is watching something and a member of their family switches a blender on in the adjoining kitchen, the system will adjust to ensure that the dialogue remains audible to the viewer in real-time despite the unexpected peripheral noise.

As far as how his lab will contribute to delivering better audio going forward, Devantier reports that it will continue to meet the needs of customers who are looking for “high quality and portable sound” while improving and expanding its OTS technology. “Maybe one day we will develop a loudspeaker that sounds great, plays very loud and is nearly invisible or exceptionally small and portable,” Devantier concludes, “Until that time, we will continue to produce solutions that make incremental improvements to sound quality.

Samsung Audio Lab