PETAL-SHAPED SILENCERS USAGE FOR NOISE REDUCTION IN CYLINDRICAL CHANNELS. Journal Akustika, [S. l.], v. 39, n. 39, 2025. DOI: 10.36336/9gjz4r14. Disponível em: https://journalakustika.com/index.php/akustika/article/view/45. Acesso em: 16 jun. 2025.