Acoustics in Piotr Siejka’s music studio
The acoustic design of the recording studio was mainly concerned with room acoustics and included in particular:guidelines for electrical installations,
- noise control for studio rooms,
- guidelines for ventilation design,
- computer modelling of room acoustics,
- development of acoustic structures,
- layout of acoustic systems in view of the requirements
- acoustics requirements.
The studio complex consists of a sound director room, recording room, vestibule, and restroom.
The noise control design for the recording studio included:
- selection of building partitions forming the body of the rooms,
- selection of door joinery.
The guidelines for noise protection related to sanitary installations were worked out, especially ventilation, which had to be quiet in itself and provide acoustic separation between rooms.
In the case of this order, room acoustics was a priority issue.
The directing room and studio have proportions that meet a number of criteria, e.g. the Bonello criterion and EBU recommendations. A modal analysis was performed, thanks to which it was possible to find out the distribution of acoustic pressure in the room for low tones. On the basis of this analysis it was possible to find out the frequency response in the control room and to optimize room acoustics by appropriate location of the listening position, listening monitors and acoustic systems.
Both rooms have resonant acoustic baffles tuned to frequencies that are problematic for the room acoustics. The acoustic systems are placed in strictly defined places – also based on a modal analysis performed as part of the room acoustics project.
In realization of the acoustics of both rooms the following acoustic systems were used:
- on the rear wall of the control room there is a broadband diffusing system D7WB, which is a fractal diffuser (diffuser in diffuser),
- on the side walls of the control room and the recording room there are slot acoustic systems made of D7HF diffusers, which introduce dispersion in the treble range,
the ceiling of the recording room was adapted with the use of 2D acoustic systems dispersing mid frequencies.