Acoustics todayPub Date : 2021-01-01DOI: 10.1121/at.2021.17.3.13
A. Alú
{"title":"Topological Acoustics","authors":"A. Alú","doi":"10.1121/at.2021.17.3.13","DOIUrl":"https://doi.org/10.1121/at.2021.17.3.13","url":null,"abstract":"Introduction The field of topology studies the properties of geometric objects that are preserved under continuous deformations, for example, without cutting or gluing. A cup with a handle is topologically equivalent to a donut (or a bagel if you live in New York) because one shape can be deformed into the other while preserving their common invariant hole. Exotic topological shapes, such as vortices, knots, and mobius strips, can be globally analyzed using the mathematical tools offered by topology. The connection between topology and acoustics may appear far-fetched, yet recent developments in the field of condensed matter physics and quantum mechanics have been inspiring exciting opportunities to manipulate sound in new and unexpected ways based on topological concepts.","PeriodicalId":72046,"journal":{"name":"Acoustics today","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63526361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Acoustics todayPub Date : 2021-01-01DOI: 10.1121/at.2021.17.3.22
S. Garrett
{"title":"One-Hundred Years of English-Language Acoustics Textbooks","authors":"S. Garrett","doi":"10.1121/at.2021.17.3.22","DOIUrl":"https://doi.org/10.1121/at.2021.17.3.22","url":null,"abstract":"","PeriodicalId":72046,"journal":{"name":"Acoustics today","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63526444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Acoustics todayPub Date : 2021-01-01DOI: 10.1121/at.2021.17.4.12
A. Coffin
{"title":"Communicate Your Science: Engaging Public Audiences with Acoustics","authors":"A. Coffin","doi":"10.1121/at.2021.17.4.12","DOIUrl":"https://doi.org/10.1121/at.2021.17.4.12","url":null,"abstract":"Introduction Nothing generates excitement like sound! From the iconic guitar riffs in Led Zeppelin’s famous song “Stairway to Heaven” (see bit.ly/3iH2HGp) to birds energetically singing (way too early in the morning) outside my bedroom window, nonscientists can relate to acoustics. Many of us entered the field because we love music, a passion evident at the jam sessions that accompany many meetings of the Acoustical Society of America (ASA). Science communication enables us to share that enthusiasm with nontechnical audiences.","PeriodicalId":72046,"journal":{"name":"Acoustics today","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63526822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Acoustics todayPub Date : 2021-01-01DOI: 10.1121/at.2021.17.4.75
Zachery O. L'Italien
{"title":"Listening to the Voices of Spanish-Speaking Acousticians in the Americas","authors":"Zachery O. L'Italien","doi":"10.1121/at.2021.17.4.75","DOIUrl":"https://doi.org/10.1121/at.2021.17.4.75","url":null,"abstract":"","PeriodicalId":72046,"journal":{"name":"Acoustics today","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63526925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Acoustics todayPub Date : 2021-01-01DOI: 10.1121/at.2022.18.1.23
B. Casper
{"title":"Human Hearing in the Underwater Environment","authors":"B. Casper","doi":"10.1121/at.2022.18.1.23","DOIUrl":"https://doi.org/10.1121/at.2022.18.1.23","url":null,"abstract":"Hearing is a key sense that informs us about our environment. The cues we obtain from sounds grab our attention, allow us to communicate, and warn us of danger. Human hearing has evolved to detect sounds in air. As a result, anyone who has tried snorkeling or Scuba diving or have put their head underwater in a bathtub has noticed that the world sounds very different. With ears underwater, sounds seem quieter, as though the listener has cotton stuffed in their ears. Moreover, in air, when one hears a sound, one can usually tell if it is coming from the left or right and, to a lesser degree, if it is from the front or back. Underwater, although a diver can hear a boat’s engine, identifying where the sound is coming from is challenging. This is because early terrestrial vertebrates evolved to hear well in air, and these adaptations are not the same as those needed for the underwater hearing abilities possessed by aquatic ancestors.","PeriodicalId":72046,"journal":{"name":"Acoustics today","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63527120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Acoustics todayPub Date : 2021-01-01DOI: 10.1121/AT.2021.17.1.10
G. Eastland
{"title":"Computational Methods and Techniques Across Acoustics","authors":"G. Eastland","doi":"10.1121/AT.2021.17.1.10","DOIUrl":"https://doi.org/10.1121/AT.2021.17.1.10","url":null,"abstract":"Sound in the World Throughout human history, people and cultures have created sound for more than simple communication. For example, early humans likely made music using primitive flutes (Atema, 2014) and considered sound integral in the design of cities (e.g., Kolar, 2018). Furthermore, the Mayans designed structures at the ruins at Chichen Itza in Mexico that used sound for worship (Declercq et. al., 2004). Specifically, clapping in front of the stairs of the El Castillo pyramid creates a sound resembling a highly revered bird by way of a series of reflections up the stairs (available at bit.ly/3jPfOTk).","PeriodicalId":72046,"journal":{"name":"Acoustics today","volume":"17 1","pages":"10"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63525701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Acoustics todayPub Date : 2021-01-01DOI: 10.1121/AT.2021.17.2.01
T. Neilsen
{"title":"Impact of the SARS-CoV-2 Pandemic on ASA Members","authors":"T. Neilsen","doi":"10.1121/AT.2021.17.2.01","DOIUrl":"https://doi.org/10.1121/AT.2021.17.2.01","url":null,"abstract":"","PeriodicalId":72046,"journal":{"name":"Acoustics today","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63525865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Acoustics todayPub Date : 2021-01-01DOI: 10.1121/AT.2021.17.1.43
J. Sundberg
{"title":"One Singer, Two Voices","authors":"J. Sundberg","doi":"10.1121/AT.2021.17.1.43","DOIUrl":"https://doi.org/10.1121/AT.2021.17.1.43","url":null,"abstract":"Introduction: Rendering Melodies with Overtones A single singer but two voices? Experience that situation by visiting world-voice-day.org/EDU/Movies and check the second movie with the title “Sehnsucht nach dem Frühlinge (Mozart) — Anna-Maria Hefele (AMH). There, coauthor AMH sings a song by Mozart, first with her singing voice and then with two simultaneous voices, a drone (a low-pitched, continuously sounding tone) plus a whistle-like high-pitched tone that renders the melody. How is this possible? That is the question that we pose here. Let us start by recalling how sounds are created by the instrument AMH is playing, the human voice.","PeriodicalId":72046,"journal":{"name":"Acoustics today","volume":"40 29 1","pages":"43"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63526174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Acoustics todayPub Date : 2021-01-01DOI: 10.1121/AT.2021.17.1.52
L. V. Uffelen
{"title":"Global Positioning Systems: Over Land and Under Sea","authors":"L. V. Uffelen","doi":"10.1121/AT.2021.17.1.52","DOIUrl":"https://doi.org/10.1121/AT.2021.17.1.52","url":null,"abstract":"Introduction Imagine with me a pre-COVID world. We are at an Acoustical Society of America (ASA) meeting in, say, Chicago, IL. We’ve just enjoyed a stimulating afternoon session, and our brains are fried. We need to find a coffee shop for a chat and some caffeine. What’s the first thing we do? We quickly pull out our mobile phones and open a Yelp or Google Maps app to find a location within a five-minute walk of the conference venue with a fouror five-star review, and we are on our way, following turnby-turn directions until we reach the destination. This mapping solution is delivered courtesy of a Global Navigation Satellite System (GNSS).","PeriodicalId":72046,"journal":{"name":"Acoustics today","volume":"17 1","pages":"52"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63526238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Acoustics todayPub Date : 2021-01-01DOI: 10.1121/AT.2021.17.2.32
Maggie Raboin
{"title":"Inaudible Noise Pollution of the Invertebrate World","authors":"Maggie Raboin","doi":"10.1121/AT.2021.17.2.32","DOIUrl":"https://doi.org/10.1121/AT.2021.17.2.32","url":null,"abstract":"Introduction Anthropogenic sound is widely recognized as an issue of environmental concern (Shannon et al., 2016). Produced by human activities like those associated with urbanization, economic development, transportation networks, and recreation, anthropogenic sound now penetrates some of the quietest places on Earth (Buxton et al., 2017). In fact, over 60% of US protected lands experience noise levels double those of background noise, despite their distance from major metropolitan areas (Buxton et al., 2017). For vertebrates, the consequences of noise in natural landscapes have been found to be multifaceted, impacting mating, movement, predator-prey dynamics, and physiology (Shannon et al., 2016). However, research has mostly focused on the impacts of pressure waves on vertebrates, with the impact of anthropogenic sound on invertebrates and the acoustic modalities they rely on (mainly particle motion and substrate-borne sound) remaining largely unstudied.","PeriodicalId":72046,"journal":{"name":"Acoustics today","volume":"17 1","pages":"32"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63526331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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