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About Roger Shively

Roger Shively is the founder and principal of Shively Acoustics International in Seattle, WA. He has more than 35 years of experience in engineering research and development, with significant experience in product realization and in launching new products at OEM manufacturers around the world. Roger co-founded JJR Acoustics in 2011 and has been a principal since its founding. Before JJR Acoustics, Roger worked as Chief Engineer of Acoustic Systems as well as functional manager for North American and Asian engineering product development teams in the Automotive Division of Harman International Industries Inc., a journey that began in 1986. Roger received his degree in Acoustical Engineering from Purdue University in 1983, and finished post-graduate work in the field of finite element analysis. He is a member of the Audio Engineering Society (AES), Acoustical Society of America (ASA), and Society of Automotive Engineering (SAE). He has published numerous research papers and articles in t

All items written by Roger Shively

CES 2024 Automotive Audio (The Good News)

February 22, 2024 by Roger Shively

CES 2024 Automotive Audio (The Good News)

The Consumer Electronics Show has become a showcase of products of the future, and this year’s content was stronger than ever. The automotive sector in the West Hall was filled beyond capacity, with Mobility spilling into the North Hall. Roger Shively reports on how hardware-dependent development is shifting to software. How Artificial Intelligence has found a practical role. How it all changes car audio systems.

Simulation Techniques: Dinaburg C2S Concentric Coplanar Stabilizer Analysis

October 19, 2023 by Roger Shively

Simulation Techniques: Dinaburg C2S Concentric Coplanar Stabilizer Analysis

Dinaburg Technology developed a unique patented integral coaxial speaker cone approach that features the advantages of a passive radiator in a small volume and takes advantage of a back wave from the loudspeaker’s diaphragm to optimize the passive radiator’s response and the off-axis performance of the active driver. The advantages are clearly audible, and this article dives into the mathematical simulation, and integrating the mechanical, acoustical, and electrical simulations.

COMSOL and Klippel, Integration of Simulation and Measurement Data

August 4, 2023 by Roger Shively

COMSOL and Klippel, Integration of Simulation and Measurement Data

Modeling and Simulation and Measurement systems evolved significantly in the past decade. Important progress is now bridging the gap between COMSOL simulation and Klippel measurement data, Roger Shively reports after returning from Orlando, FL, where we attended another edition of the ALTI Expo & Conference (June 11-13, 2023). This article summarizes the content covered in a very important session as part of the APDA-ALTI Education Symposium 2023.

AES 2022 Automotive Audio International Conference

December 7, 2022 by Roger Shively

AES 2022 Automotive Audio International Conference

Over the course of three days and two nights, June 8–10, the Audio Engineering Society’s 2022 International Automotive Audio Conference in Dearborn, MI, served as a great event for everyone in the automotive audio community to reconnect. The event also featured a full track of sessions promoted by the AES Audio Product Education Institute (APEI). This report, written by Roger Shively, the AES Conference Chair, reviews the most important presentations topics discussed and the exciting demonstrations by companies such as Dolby, Fraunhofer, Dirac, Tymphany, and DSP Concepts, among many others.

Automotive Audio Solutions - The Changing Automotive Environment in 2021

July 8, 2021 by Roger Shively

Automotive Audio Solutions - The Changing Automotive Environment in 2021

For the audioXpress 2021 Automotive Audio Solutions update, Roger Shively (JJR Acoustics and Co-Chair of the AES Automotive Audio Technical Committee) wrote an expanded overview of the many ways in which the audio industry is increasingly interacting with car manufacturers, particularly in the transition to fully-electric powered vehicles. This article was originally published in audioXpress, June 2021.

Automotive OEM Engineering and Business - An Opportunity for Audio Brands

June 25, 2021 by Roger Shively

Automotive OEM Engineering and Business - An Opportunity for Audio Brands

Branded Sound Signatures? Unique Brand Simulation Presets? All Part of Automotive OEM Engineering and Business. In this article, originally published in The Audio Voice newsletter, Roger Shively (Co-founder, JJR Acoustics) writes about automotive opportunities for branded audio and how, as audio system and vehicle acoustic simulation is on the rise, modeling and tuning of sound signatures also becomes a possibility.