Acoustic Design of a Modular Studio Box for Use as Control and Mixing Room for Immersive Audio

Titolo Rivista RIVISTA ITALIANA DI ACUSTICA
Autori/Curatori Andrea Cicero
Anno di pubblicazione 2024 Fascicolo 2024/2
Lingua Inglese Numero pagine 9 P. 49-57 Dimensione file 0 KB
DOI 10.3280/ria2-2024oa17606
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This article presents a detailed analysis of the acoustic design process of a soundproofed box intended for control room and mixing for immersive audio. The main objectives of the project were defined based on the quality criteria required for critical listening environments, particularly for Dolby Atmos rooms. The adopted methodological approach relies on predictive evaluations of key acoustic parameters, supported by studies and calculations conducted using advanced numerical models and software. Key phases of the design process include the optimisation of the box dimensions, the modal analysis for low-frequency response, the design of the listening layout and early reflections, the specification of the internal acoustic treatment. The technical solutions adopted aim to ensure an accessible and cost-effective environment, achieved through optimization in material and space selection while still meeting requirements.

L’articolo presenta una dettagliata analisi del processo di progettazione acustica di un box insonorizzato destinato alla sala regia e mixing per audio immersivo. Gli obiettivi principali del progetto sono stati definiti in base ai criteri di qualità richiesti per ambienti di ascolto critico e, in particolare, per sale Dolby Atmos. L'approccio metodologico adottato si basa su valutazioni previsionali dei parametri acustici chiave, supportate da studi e calcoli svolti tramite modelli numerici e software avanzati. Le fasi chiave del pro-cesso di progettazione includono l'ottimizzazione delle dimensioni del box, l'analisi modale per la risposta a bassa frequenza, l'ottimizzazione del layout di ascolto e delle prime riflessioni, nonché la progettazione del trattamento acustico interno. Le soluzioni tecniche adottate mirano a garantire un ambiente accessibile e a costo ridotto, attraverso l'ottimizzazione nella scelta dei materiali e degli spazi, pur rispettando i requisiti previsti.

Parole chiave:; acustica degli studi; trattamento acustico; audio immersivo; modellazione numerica

  1. Dolby Laboratories, Dolby Atmos Music Studios, (n.d.). https://professional.dolby.com/music/dolby-atmos-music-studios (accessed March 20, 2024).
  2. Dolby Laboratories, Dolby Atmos Home Entertainment Studio Technical Guidelines, (2021). https://professionalsupport.dolby.com/s/article/Dolby-Atmos-Home-Entertainment-Studio-Technical-Guidelines?language=en_US.
  3. ITU-R, ITU-R BS.1116-1: Methods for the subjective assess-ment of small impairments in audio systems including multi-channel sound systems, International Telecommu-nication Un-ion, Geneva (1997) 1–26.
  4. Dolby Laboratories, Dolby Atmos Music Room Configura-tion, (2021). https://professionalsupport.dolby.com/s/article/Dolby-Atmos-Music-Studio-Best-Practices?lanuage=en_US (ac-cessed March 21, 2024).
  5. B.M. Fazenda, M. Stephenson, A. Goldberg, Perceptual thresolds for the effects of room modes as a function of modal decay, J Acoust Soc Am 137 (2015) 1088–1098. https://doi.org/10.1121/1.4908217.
  6. Dolby Laboratories, Dolby Atmos Room Design Tool Home Entertainment + Music (DARDT HE+Music), (2023).
  7. R.H. Bolt, Note on Normal Frequency Statistics for Rec-tangular Rooms, Journal of the Acoustical Society of America 18 (1946) 130–133. https://doi.org/10.1121/1.1916349.
  8. M.M. Louden, Dimension-ratios of rectangular rooms with good distribution of eigentones, Acustica 24 (1971) 101–104.
  9. O.J. Bonello, New Criterion for the Distribution of Normal Room Modes., Audio Engineering Society Preprint 29 (1979) 597–606. http://www.aes.org/e-lib/browse.cfm?elib=3889.
  10. T.J. Cox, P. D’Antonio, Room optimizer: A computer pro-gram to optimize the placement of listener, loudspeak-ers, acoustical surface treatment and room dimensions in critical listening rooms, 103rd Convention of the Audio Engineering Society (1997).
  11. T.J. Cox, P. D’Antonio, M.R. Avis, Room sizing and optimi-zation at low frequencies, AES: Journal of the Audio Engi-neering Society 52 (2004) 640–651. http://www.aes.org/e-lib/browse.cfm?elib=13011.
  12. B.-I. Dalenbäck, CATT-Acoustic, (2022).
  13. P. R. Newell, Recording studio design, 3rd ed., Focal, 2012.
  14. C.N.R. M. W. Scroggs J. S. Dokken, G.N. Wells, Construc-tion of arbitrary order finite element degree-of-freedom maps on polygonal and polyhedral cell meshes, 2022.
  15. C. Geuzaine, J.-F. Remacle, Gmsh: A 3-D finite element mesh generator with built-in pre- and post-processing fa-cilities, Int J Numer Methods Eng 79 (2009) 1309–1331. https://doi.org/10.1002/nme.2579.
  16. Y. Miki, Acoustical properties of porous materials. Modifi-cations of Delany-Bazley models, Journal of the Acoustical Society of Japan (E) 11 (1990) 19–24. https://doi.org/10.1250/ast.11.19.
  17. M. Kleiner, J. Tichy, Acoustics of small rooms, CRC Press, Boca Raton, Florida, 2014.
  18. J. Mulcahy, Room Eq Wizard, (2024). https://www.roomeqwizard.com/index.html (accessed March 23, 2024).

Andrea Cicero, Acoustic Design of a Modular Studio Box for Use as Control and Mixing Room for Immersive Audio in "RIVISTA ITALIANA DI ACUSTICA" 2/2024, pp 49-57, DOI: 10.3280/ria2-2024oa17606