First Regional Acoustics Symposium, December 16th-18th, Lima-Perú 2021 Scientific Committee Walter A. MontanoAcoustics and Vibroacoustics Institute of Perú Laura A. LancónAcoustics Lab UAM – Azcapotzalco. México Silvia G. GarcíaAcoustics Lab UAM – Azcapotzalco. México Francisco Mata CabreraTAD – UCLM. Spain Fernando J. Elizondo Acoustics Lab FIME-UANL. México Marlenne G. Uría Prof. on Acoustics-UNIFÉ. Perú Organizer Committee Elena I. GushikenPresidentINPACTA. Perú Norka DíazVocalINPACTA. Perú Henry D. LazarteAcademic DirectorINPACTA. Perú Amparo CastañedaTreasurerINPACTA. Perú Silvia I. QuintoSecretaryINPACTA. Perú Wilfredo ContrerasVocalINPACTA. Perú International Guests Marion BurgessIYS2020+ Antonino di BellaICA Board Michael TaroudakisIYS2020+Mark HamiltonICA Board Fausto RodríguezIYS2020+ Spanish Speaking AcousticiansASA Technical Sessions #1 The Acoustics of Ancient Theatres Soundscape COVID-19-related sound changes Mirian KolarArcheoacoustics in Chavín de Huántar Gustavo BassoAcoustic restoration of theTeatro Colón. Buenos Aires, Argentina Andrea FarinaAcoustic intervention in monumental buildings, Argentina G. Fernández/A. HaedoAcoustic restoration of the Teatro Solís. Montevideo, Uruguay Pablo KoganUniversidad de Chile Silvia GarcíaUAM-México Elena GushikenAcoustic intervention of the Macchu Picchu Pueblo auditorium Mario Huaquin, ChileAcoustics planning of urban space Long-term sound monitoring in Lima, Perú The case of Monterrey, México The case of Barcelona, Spain The case of Montevideo, Uruguay Technical Sessions #2 Effects of noise in humans Architectural Acoustics Engineering Acoustics (To confirm) (To confirm) (To confirm) (To confirm) (To confirm) (To confirm) Technical Sessions #3 Acoustic confort Room acoustics Acoustics in Law and Medicine (To confirm) (To confirm) (To confirm) (To confirm) (To confirm) (To confirm)