THD Podcast

The Total Harmonic Discussion / the THD Podcast. A weekly discussion on audio and headphone technologies and the people who bring the technology to market. In episode 105, Frederic Nabki from Spark Microsystems in Montreal, Canada joins us to tell us about using UltraWide Band (UWB) for wireless audio transport. SPARK Microsystems ultra-wideband wireless transceivers are transforming augmented reality (AR) and virtual reality (VR), audio, gaming, and IoT devices. Delivering responsive low latency, ultra-low power wireless links with high data rates, SPARK UWB gives designers the ability to eliminate wires and develop truly game-changing applications. Check out the podcast on YouTube Spotify Amazon Music iHeartRadio Rumble BitChute Limited Apple Google Thanks to Barry Vogel and the ALTI Audio & Loudspeaker Technologies International for their support as well! #audioengineering #acoustics #audio Please like, subscribe, share, and comment with your feedback! Enjoy the podcast! Support the podcast on our Patreon page: www.patreon.com/THDPodcast www.db-ent.com linkedin.com/in/DavidJLindberg @dlindberg11 discord.gg/HF6NF3fc www.sparkmicro.com/ linkedin.com/company/sparkmicrosystems  @sparkmicrosystems  www.totalharmonicdiscussion.com

The Total Harmonic Discussion / the THD Podcast. A weekly discussion on audio and headphone technologies and the people who bring the technology to market. In episode 104, Michel Roig and Jonas Eklund from Audiodo in Malmö, Sweden join to tell us about their Personal Sound technology. Personal Sound is opening up a new world of audio solutions by optimizing sound for your unique hearing. With their patented technology, global headphone brands are giving each and every listener sound quality that has been perfected for them. Personal Sound is constantly developed to allow for new solutions and applications. The current technology departs from a simple hearing assessment. We test your left and right ear separately through the app, calculate where and how strong any adjustments should be, and apply only the necessary changes. Voila, you can now hear like you’ve never heard before. Check out the podcast on YouTube Spotify Amazon Music iHeartRadio Rumble BitChute Limited Apple Google Thanks to Barry Vogel and the ALTI Audio & Loudspeaker Technologies International for their support as well! #audioengineering #acoustics #audio Please like, subscribe, share, and comment with your feedback! Enjoy the podcast! Support the podcast on our Patreon page: www.patreon.com/THDPodcast www.db-ent.com linkedin.com/in/DavidJLindberg @dlindberg11 discord.gg/HF6NF3fc www.audiodo.com linkedin.com/company/audiodo instagram.com/audiodo.official facebook.com/audiodo.official www.totalharmonicdiscussion.com

The Total Harmonic Discussion / the THD Podcast. A weekly discussion on audio and headphone technologies and the people who bring the technology to market. In episode 103, Jackie Green, the Technical Advisor for the UltraWide Band Alliance joins to explain how the UWB wireless technology works and its advantages for use in audio products. UWB Alliance is a global organization collectively establishing UWB technology as an open-standards, interoperable industry with a global ecosystem. Since 2019, UWB has been expanding into a mainstream consumer technology for smartphones, wearables, automotive, and industry, forecasted to drive sales volumes of over one billion devices annually by 2025. Building upon the standardization work performed by our staff and members within the IEEE on the 802.15.4z, we are focused on providing a favorable regulatory and spectrum management landscape to maximize UWB growth. This includes securing new advantageous rulesets in the pcoming reviews in the USA and Europe to expand the use cases for UWB technology. We are also heavily involved in optimizing spectrum sharing while minimizing interference. We evangelize coexistence for the expanding Wireless Multiverse and work with members and stakeholders to provide thought leadership on strategies to “make it all work together”. Check out the podcast on YouTube Spotify Amazon Music iHeartRadio Rumble BitChute Limited Apple Google Thanks to Barry Vogel and the ALTI Audio & Loudspeaker Technologies International for their support as well! #audioengineering #acoustics #audio Please like, subscribe, share, and comment with your feedback! Enjoy the podcast! Support the podcast on our Patreon page: www.patreon.com/THDPodcast www.db-ent.com linkedin.com/in/DavidJLindberg @dlindberg11 discord.gg/HF6NF3fc www.uwballiance.org linkedin.com/in/jackie-green-a5226410 @UWBAlliance www.totalharmonicdiscussion.com

The Total Harmonic Discussion / the THD Podcast. A weekly discussion on audio and headphone technologies and the people who bring the technology to market. In episode 102, Clement Lambert of Kartesian Acoustic joins us to talk about improving the dynamic capacity of drivers by focusing on the details like the delicacy of spider and surround design and how it impacts acoustic performance. Dedicated to audio excellence, Kartesian contributes to continually improving the sound quality of audio products. For over a decade, they have developed innovative technology that can be integrated into any customer demand. Kartesian products can be adapted to your specific technical requirements and brand spirit. Located in the northeast of France, Kartesian are electro-acoustic experts, dedicated to advanced loudspeakers and audio technology. Our customers are international high-end audio, Hi-Fi, multimedia, and professional brands. They only work with suppliers oriented to innovation, able to follow our demanding quality process. They have selected the best suppliers for each loudspeaker component (magnet, frame, voice coil, ...) all over the world. Full process, from engineering to production is located in France. Every unit produced has a unique quality control number linked with our archive and stock to fully ensure the required performances for each loudspeaker. Check out the podcast on YouTube Spotify Amazon Music iHeartRadio Rumble BitChute Limited Apple Google Thanks to Barry Vogel and the ALTI Audio & Loudspeaker Technologies International for their support as well! #audioengineering #acoustics #audio Please like, subscribe, share, and comment with your feedback! Enjoy the podcast! Support the podcast on our Patreon page: www.patreon.com/THDPodcast www.db-ent.com linkedin.com/in/DavidJLindberg @dlindberg11 discord.gg/HF6NF3fc www.kartesian-acoustic.com instagram.com/kartesianloudspeakers youtube.com/watch?v=Fkb600urdKw www.totalharmonicdiscussion.com

The Total Harmonic Discussion / the THD Podcast. A weekly discussion on audio and headphone technologies and the people who bring the technology to market. In episode 101, Konstantin Davy and Andrea Greco from USound join us to update us on the journey to bring MEMS speakers to the world. They have a new MEMS speaker called CONAMARA plus an ASIC called Tarvos which is a purpose-built audio amplifier to drive their speakers. In addition, they have partnered with Luxshare and OBO Pro to combine dynamic drivers with their MEMS speakers to create 2-way speaker modules that deliver full-range sound. USound is a fast-growing company that enables customers to bring new revolutionary audio products to the market. We provide innovative audio system solutions based on highly scalable MEMS technology. Our revolutionary products include advanced MEMS speakers, audio modules and amplifiers. Check out the podcast on YouTube Spotify Amazon Music iHeartRadio Rumble BitChute Limited Apple Google Thanks to Barry Vogel and the ALTI Audio & Loudspeaker Technologies International for their support as well! #audioengineering #acoustics #audio Please like, subscribe, share, and comment with your feedback! Enjoy the podcast! Support the podcast on our Patreon page: www.patreon.com/THDPodcast www.db-ent.com linkedin.com/in/DavidJLindberg @dlindberg11 discord.gg/HF6NF3fc www.usound.com linkedin.com/company/usound-gmbh @USoundTech www.totalharmonicdiscussion.com

The Total Harmonic Discussion / the THD Podcast. A weekly discussion on audio and headphone technologies and the people who bring the technology to market. In episode 100, Nikolaj Hviid, CEO of Bragi, joins to discuss the market in headphones and the challenges to differentiate plus the forward-looking trends. Check out the podcast on YouTube Spotify Amazon Music iHeartRadio Rumble BitChute Limited Apple Google Thanks to Barry Vogel and the ALTI Audio & Loudspeaker Technologies International for their support as well! #audioengineering #acoustics #audio Please like, subscribe, share, and comment with your feedback! Enjoy the podcast! Support the podcast on our Patreon page: www.patreon.com/THDPodcast www.db-ent.com linkedin.com/in/DavidJLindberg @dlindberg11 discord.gg/HF6NF3fc www.bragi.com linkedin.com/in/nikolaj-hviid-046227/ @hellobragi www.totalharmonicdiscussion.com

The Total Harmonic Discussion / the THD Podcast. A weekly discussion on audio and headphone technologies and the people who bring the technology to market. In episode 99, Dr Sean Olive from Harman International joins to explain the background and the rationale behind the Harman Headphone Target Curve. Some fascinating discussions on the evolution and some of the test procedures using scientific controls to produce a statistically significant study. Ultimately, it produces a line of fit between the listening experience and the frequency response to give headphone developers a target curve that satisfies most users. Notes from the question at 41:45 from Sean Olive: "I thought a bit more about the question Simon asked whether the target curve should be different for IE vs OE/AE types and wanted to clarify in case I misunderstood the question. He (Simon) seemed to think they should be different but perhaps he was referring to differences between targets for Type 3,3 versus Type 4.3 -- not headphone types? The baseline targets for IE and OE/AE were the same for Type 3.3 before adjustments to bass and treble were made. The baseline was determined by measuring a flat in-room speaker system. We found the IE target had about 4 dB more bass than the AE/OE target and only slightly different in treble. The same baseline for IE/ AE/OE is determined by measuring the speakers in the same room with Type 4.3 HATS. But after adjustments, I believe the IE/OE/AE will be closer than the Type 3,3 particularly in the bass b/c of the larger volume and acoustic impedance of the Type 4.3 vs 3.3. Will the headphone targets for Type 4.3 versus 3,3 be different? Absolutely, because the response and acoustic impedances are different. The main differences will be below 200 Hz and above 3-4 kHz. Hopefully, that clarifies my response to this question, if I understood it correctly." Check out the podcast on YouTube Spotify Amazon Music iHeartRadio Rumble BitChute Limited Apple Google Thanks to Barry Vogel and the ALTI Audio & Loudspeaker Technologies International for their support as well! #audioengineering #acoustics #audio Please like, subscribe, share, and comment with your feedback! Enjoy the podcast! Support the podcast on our Patreon page: www.patreon.com/THDPodcast www.db-ent.com linkedin.com/in/DavidJLindberg @dlindberg11 discord.gg/HF6NF3fc www.harman.com linkedin.com/in/seanolive @seanolive www.totalharmonicdiscussion.com

The Total Harmonic Discussion / the THD Podcast. A weekly discussion on audio and headphone technologies and the people who bring the technology to market. In episode 98, Aernout Arends the CEO of Absolute Audio Labs in the Netherlands joins to discuss their algorithm bridging the gaps from hearings to the OTC hearing assist devices. Absolute Audio Labs develops cutting-edge technology for Hearing and Voice applications. Their B2B Audio software suites - PYOUR Audio Hearing, Voice, and Safesound - cover a wide range of applications, mainly focusing on speech intelligibility, personalization, music perception, and hearing protection for TWS earbuds and Hearing Aids. We are also joined by Adrie van Meijeren of Renasas to discuss the collaboration with semiconductor manufacturer Renesas. Renesas has selected AAL’s PYOUR Audio new 3.0 hearing suite as the solution for hearing enhancement supported on a new family of connectivity products. The collaboration intends to deliver excellent assistive hearing performance to a broad range of products from (OTC) hearing aids, TWS earbuds to unified communication headsets where it can enhance hearing in noisy environments. Check out the podcast on YouTube Spotify Amazon Music iHeartRadio Rumble BitChute Limited Apple Google Thanks to Barry Vogel and the ALTI Audio & Loudspeaker Technologies International for their support as well! #audioengineering #acoustics #audio Please like, subscribe, share, and comment with your feedback! Enjoy the podcast! Support the podcast on our Patreon page: www.patreon.com/THDPodcast www.db-ent.com linkedin.com/in/DavidJLindberg @dlindberg11 discord.gg/HF6NF3fc www.absoluteaudiolabs.com linkedin.com/company/absolute-audio-labs @AAL_Audio www.totalharmonicdiscussion.com

The Total Harmonic Discussion / the THD Podcast. A weekly discussion on audio and headphone technologies and the people who bring the technology to market. In episode 97, Vince Rey of Hottinger Brüel & Kjær (HBK) joins again from California to discuss the Buzz, Squeak, and Rattle or ‘BSR’ test audio quality metric. It was developed by Dr. Wookeun Song (HBK). This BSR metric relies on deconvolution and time-varying loudness sound quality, considering frequency and time masking on the human ear. It can be summarised as 'Does the measurement curve match the perception of the sound quality and how can we correlate the two?' Check out the podcast on YouTube Spotify Amazon Music iHeartRadio Rumble BitChute Limited Apple Google Thanks to Barry Vogel and the ALTI Audio & Loudspeaker Technologies International for their support as well! #audioengineering #acoustics #audio Please like, subscribe, share, and comment with your feedback! Enjoy the podcast! Support the podcast on our Patreon page: www.patreon.com/THDPodcast www.db-ent.com linkedin.com/in/DavidJLindberg @dlindberg11 discord.gg/HF6NF3fc www.hbkworld.com linkedin.com/company/hbkworld-test-and-measurement www.totalharmonicdiscussion.com

The Total Harmonic Discussion / the THD Podcast. A weekly discussion on audio and headphone technologies and the people who bring the technology to market. In episode 96, Stefan Liebich of Elevear joins to discuss their audio algorithms for hearables that cover occlusion, idle noise, and immersive 3D audio. Developed over many years and now being commercialized with key silicon partners. OCCLEAR® TECHNOLOGY NATURAL OWN VOICE THROUGH OCCLUSION CANCELLATION Existing headphones isolate the user from the environment, making their voice sound boomy and unnatural to them. This phenomenon is due to the occlusion effect, which attenuates air-conducted sound while amplifying body-conducted sound. A headphone user who is unhappy with the unnatural sound of their own voice. A headphone user who enjoys a natural own-voice sound thanks to the Occlear® technology. Our Occlear® technology eliminates the occlusion effect, allowing hearables users to perceive their voice and environment with natural clarity. Occlear® requires no specialized hardware and can be integrated seamlessly into ANC-ready hearables via a simple firmware update. IDLE NOISE REDUCTION TECHNOLOGY WORLD-CLASS HISS-FREE TRANSPARENCY FOR YOUR HEARABLE Hearables users often complain about microphone noise or hiss when using transparency mode. It stems from the low-cost, miniature microphones used in today’s hearables. To mitigate this noise, manufacturers often limit the bandwidth of their transparency mode, compromising the clarity of the sound. Our patented Idle Noise Reduction (INR) technology reduces the noise floor of hearable microphones by 10–15 dB, matching the performance of high-end studio microphones. The INR removes the hiss, allowing hearables manufacturers to achieve world-class transparency with low-cost components. IMMERSIVE 3D AUDIO TECHNOLOGY INSTANT, UNALTERED 3D AUDIO WITHOUT LATENCY OR DISTORTION Existing spatial audio solutions often struggle with head movement, resulting in a lag that disrupts the immersive experience. They also tend to compromise sound quality by adding reverb. With imperceptible motion-to-sound latency, our algorithms ensure that the audio keeps pace with your every move. This seamless integration means you experience the world of sound most naturally as you navigate through it. Experience unaltered, high-fidelity audio that runs directly on your hearable device—no need for complex stack adjustments, including Bluetooth and app dependencies. Check out the podcast on YouTube Spotify Amazon Music iHeartRadio Rumble BitChute Limited Apple Google Thanks to Barry Vogel and the ALTI Audio & Loudspeaker Technologies International for their support as well! #audioengineering #acoustics #audio Please like, subscribe, share, and comment with your feedback! Enjoy the podcast! Support the podcast on our Patreon page: www.patreon.com/THDPodcast www.db-ent.com linkedin.com/in/DavidJLindberg @dlindberg11 discord.gg/HF6NF3fc www.elevear-tech.com linkedin.com/company/elevear www.totalharmonicdiscussion.com

In episode 95, HBK - Hottinger Brüel & Kjær's Vince Rey joins to discuss their new 5128 head & torso simulator (HATS) plus their 4620 couplers. HBK was formed in 2019 by merging two market-leading organizations: HBM and Brüel & Kjær. Both companies have over 80 years of experience providing innovative and high-quality solutions in precision test and measurement technology for various industries. Check out the podcast on YouTube Spotify Amazon Music iHeartRadio Rumble BitChute Limited Apple Google Thanks to Barry Vogel and the ALTI Audio & Loudspeaker Technologies International for their support as well! #audioengineering #acoustics #audio Please like, subscribe, share, and comment with your feedback! Enjoy the podcast! Support the podcast on our Patreon page: www.patreon.com/THDPodcast www.db-ent.com linkedin.com/in/DavidJLindberg @dlindberg11 discord.gg/HF6NF3fc www.hbkworld.com linkedin.com/company/hbkworld-test-and-measurement/ www.totalharmonicdiscussion.com

The Total Harmonic Discussion / the THD Podcast. A weekly discussion on audio and headphone technologies and the people who bring the technology to market. In episode 94, Marie-Eve Desrochers joins to introduce their technology that targets to bring efficiencies and speed to the edge in MEMS microphones. Echosonic aims to develop next-generation MEMS smart microphones using reservoir computing technology to enable on-sensor audio signal processing using machine learning for both inference and software upgrading. Check out the podcast on YouTube Spotify Amazon Music iHeartRadio Rumble BitChute Limited Apple Google Thanks to Barry Vogel and the ALTI Audio & Loudspeaker Technologies International for their support as well! dB Enterprises #audioengineering #acoustics #audio Please like, subscribe, share, and comment with your feedback! Enjoy the podcast! Support the podcast on our Patreon page: www.patreon.com/THDPodcast www.db-ent.com linkedin.com/in/DavidJLindberg @dlindberg11 discord.gg/HF6NF3fc www.echosonic.ca linkedin.com/company/echosonicai www.totalharmonicdiscussion.com

The Total Harmonic Discussion / the THD Podcast. A weekly discussion on audio and headphone technologies and the people who bring the technology to market. In episode 93, Dan Knighten, Product Line General Manager at Audio Precision joins to talk about their new low-cost APx516B Audio Analyzer. With the proliferation of digital audio interfaces, there’s an increasing need for a straightforward, budget-friendly analyzer for both digital and analog audio testing. The APx516B Series Audio Analyzer offers a cost-effective modular solution for electronic audio customers, upholding the Audio Precision standard of performance and service. Designed for extended R&D teams and production test applications, the APx516B delivers comprehensive testing for analog and digital audio in a versatile, affordable package. Learn how the hashtag#APx516B can integrate into your testing solution. Check out the podcast on YouTube Spotify Amazon Music iHeartRadio Rumble BitChute Limited Apple Google Thanks to Barry Vogel and the ALTI Audio & Loudspeaker Technologies International for their support as well! Thanks to AudioXpress for their support of this episode dB Enterprises #audioengineering #acoustics #audio Please like, subscribe, share, and comment with your feedback! Enjoy the podcast! Support the podcast on our Patreon page: www.patreon.com/THDPodcast www.db-ent.com linkedin.com/in/DavidJLindberg @dlindberg11 discord.gg/HF6NF3fc www.ap.com linkedin.com/company/audio-precision @audioprecision www.totalharmonicdiscussion.com

The Total Harmonic Discussion / the THD Podcast. A weekly discussion on audio and headphone technologies and the people who bring the technology to market. In episode 92, Steve Temme of Listen Inc. joins us for part 2 of the discussion. In this segment, Steve explains their algorithms for end-of-line production testing for detecting if you've got some particles or even a screwdriver left in your speaker from manufacturing. Listen is a world leader in audio and electroacoustic testing and measurement. Founded in 1995, when its flagship product, SoundCheck® was launched, the company has pioneered electroacoustic measurement techniques for 20 years and sets the standard in the marketplace with powerful and innovative test methods and algorithms, fast and flexible testing, and excellent service and customer support. Check out the podcast on YouTube Spotify Amazon Music iHeartRadio Rumble BitChute Limited Apple Google Thanks to Barry Vogel and the ALTI Audio & Loudspeaker Technologies International for their support as well! dB Enterprises #audioengineering #acoustics #audio Please like, subscribe, share, and comment with your feedback! Enjoy the podcast! Support the podcast on our Patreon page: www.patreon.com/THDPodcast www.db-ent.com linkedin.com/in/DavidJLindberg @dlindberg11 discord.gg/HF6NF3fc www.listeninc.com www.youtube.com/@UCbgsX_w7Qiq1rL_m11O5ezA linkedin.com/company/listen-inc._2 www.totalharmonicdiscussion.com

The Total Harmonic Discussion / the THD Podcast. A weekly discussion on audio and headphone technologies and the people who bring the technology to market. In episode 91, Steve Temme of Listen Inc. joins us for part 1 of a two part discussion. In this segment, Steve explain's their algorithms for end-of-line production testing for Rub & Buzz in speaker manufacturing. Listen is a world leader in audio and electroacoustic test and measurement. Founded in 1995, when its flagship product, SoundCheck® was launched, the company has pioneered electroacoustic measurement techniques for 20 years and sets the standard in the marketplace with powerful and innovative test methods and algorithms, fast and flexible testing, and excellent service and customer support. Check out the podcast on YouTube Spotify Amazon Music iHeartRadio Rumble BitChute Limited Apple Google Thanks to Barry Vogel and the ALTI Audio & Loudspeaker Technologies International for their support as well! dB Enterprises #audioengineering #acoustics #audio Please like, subscribe, share, and comment with your feedback! Enjoy the podcast! Support the podcast on our Patreon page: www.patreon.com/THDPodcast www.db-ent.com linkedin.com/in/DavidJLindberg @dlindberg11 discord.gg/HF6NF3fc www.listeninc.com https://www.youtube.com/channel/UCbgsX_w7Qiq1rL_m11O5ezA/playlists linkedin.com/company/listen-inc._2 www.totalharmonicdiscussion.com