AUTHOR=Shi Chengzhi TITLE=Editorial: Developments in Acoustic, Phononic, and Mechanical Materials for Wave Control JOURNAL=Frontiers in Mechanical Engineering VOLUME=7 YEAR=2021 URL=https://www.frontiersin.org/journals/mechanical-engineering/articles/10.3389/fmech.2021.790830 DOI=10.3389/fmech.2021.790830 ISSN=2297-3079