Rigorous peer-reviews are the basis of high-quality academic publishing. Thanks to the great efforts of our reviewers, Acoustics was able to maintain its standards for the high quality of its published papers. Thanks to the contribution of our reviewers, in 2021, the median time to first decision was 16 days and the median time to publication was 48 days. The editors would like to extend their gratitude and recognition to the following reviewers for their precious time and dedication, regardless of whether the papers they reviewed were finally published:
| Adams, Norman | Montes-González, David |
| Aletta, Francesco | Montoya-Belmonte, José |
| Al-Radhi, Mohammed Salah | Nanda, Soumya |
| Alsina-Pagès, Rosa Ma | Nicholas, Gary |
| Antoni, Jerome | Novoa, José |
| Ashri, Rami | Nowotny, Łukasz |
| Barbagallo, Mathias | O’Shaughnessy, Douglas |
| Basner, Mathias | Palleschi, Federica |
| Bravo, Teresa | Pantha, Pramod |
| Burlea-Schiopoiu, Adriana | Papadakis, Nikolaos M. |
| Burnett, Stephen | Parinov, Ivan A. |
| Carles Arribas, José Luis | Pedrero González, Antonio |
| Caruso, Giulia | Petošić, Antonio |
| Cueto Ancela, José Luis | Petrova, Tatiana |
| Darwish, Mahmoud | Pilch, Adam |
| Dashtipour, Kia | Puglisi, Giuseppina Emma |
| Dehghanfirouzabadi, Ali | Qu, Tianshu |
| Dumnić, Marija | Rascon, Caleb |
| Esteve Faubel, Rosa Pilar | Ribay, Guillemette |
| Fernandes, Donald | Romano, Rosario |
| Floros, Andreas | Rossella, Francesco |
| Frazier, Michael | Rubio Carpio, Alejandro |
| Fredianelli, Luca | Rusu, Corneliu |
| Gradov, Oleg M. | Sampath, Santhakumar |
| Grassi, Massimo | Sattar, Farook |
| Herrero-Durá, Iván | Savic, Ivan M. |
| Himpe, Christian | Schabowicz, Krzysztof |
| Horvat, Marko | Schulte-Fortkamp, Brigitte |
| Iannace, Gino | Seetharam, K.E. |
| Izquierdo, Alberto | Segura-Garcia, Jaume |
| Jia, Kun | Sharma, Gyani Shankar |
| Jiménez, Noé | Shtrepi, Louena |
| Kahle, Eckhard | Slimane, Sid Ahmed |
| Kanev, Nikolay | Stavroulakis, Georgios E. |
| Kavčič, Alenka | Sudarsono, Anugrah Sabdono |
| Klaczynski, Maciej | Tavares, Tiago Fernandes |
| Kolar, Miriam A. | Tena, Elena |
| Kumar, Sanjay | Tobing, Patrick Lumban |
| Liu, Baiyang | Vanhille, Christian |
| Liu, Chengqing | Vida, Jerónimo |
| Lunkov, Andrey | Vladimir, Kodnyanko |
| Lupu, Eugen | Witt, David E. |
| Masoero, Marco | Yang, Shujie |
| Meng, Fanyu | Zemskov, Andrei |
| Mishra, Satyendra Kumar |
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