CopyrightⒸ RION All Right ReservedNo portion of this journal may be reprinted or redistributed without prior consent.Vol.42022/5To my astonishment, a whole year has gone by since the publication of the first volume of the Rion Technical Journal. I’m pleased to bring you Volume 4. The first volume was launched during the COVID-19 pandemic. Back then, many of us wondered if the interviews would even be possible. We’re grateful to all those who supported our efforts during these challenging times. In the various articles I’ve seen through to publication, I hope we’ve been able to convey our advanced technologies, the commitment of our engineers, and visions of future technologies in a way befitting a technical journal. The Rion Technical Journal covers a wide range of topics from the unique perspective of each writer. I hope it offers an absorbing reading experience for all. (Nakayama)Half a year has passed since I joined the Editorial Committee for RTJ. Having relatively little experience with editorial work, I spent my first days struggling with the terms of editing and publishing, like koryo （校了）, meaning “completion of proofreading.” Fortunately, I’m now a bit more acclimated to my responsibilities. As a mother of three just returning from parental leave, I’ve missed scheduled interviews from time to time when one of my children fell sick, but thanks to the support of my colleagues on the Editorial Committee I’ve been able to fulfill my responsibilities. I hope this journal manages to provide a sense of familiarity with our products as well as convey the goodwill of the staff. (Zamami)Editorial ForewordCover Art: An anechoic chamberAcoustic insulation made of glass wool creates a warm, natural impression, almost like wood. Standing in an entirely enclosed space, you nonetheless feel safe and comfortable, as if you were in the woods. It’s an enclosed facility for studying sound, but the results are reected in our products and have come to be widely known throughout the world. The artwork expresses the sense of vastness present within this enclosed space.By Yusuke Kitajima (woodblock artist)Completed the graduate course in block printing at the Musashino Art University in 2014. He draws on a unique method that combines the techniques of woodblock printing and mono-typing to create a single unique print, using familiar everyday items as subjects.PROJECT STORY A Documentary of Product Development at RionUsing Sound to Measure CapacityHow did the acoustical capacity meter and acoustical volume meter come into being?HISTORY OF TECHNOLOGY Rion’s Technologies Over the YearsPart 4:Vibration Level MetersGetting closer to the human perception of vibrationFROM NOW ON The Now and Future of RionFUTURE TALK SESSION A talk session with our core staff engineersFuture Technologies and Rion’s FutureSPECIAL REPORT On the Frontlines of Hearing SupportA Visit to the Rionet Center ShinjukuTALES OF RION See and Hear Tales of Rion Products and Daily Life!Exploring How We Perceive SoundFROM OVERSEAS Rion Across the SeaSouth KoreaOUR FAVORITE TOWN, KOKUBUNJI RION Staff Show You AroundStrolls Around Kokubunji[Contributing to Community Through Volleyball!]ACTIVITYRion’s [Activity Report]EPILOGUE SCIENCE, SCIENCE! Column by Rion’s staff on their obsession with scienceBecause We’re Science and Math LoversNo. 004 Effort multiplied by 64020610121416171820
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