Successful soundproofing, the reduction of unwanted sound propagation
in a building, depends on the quality of the measure, on structural and other environmental
factors. What does it mean?
Double-shell element construction + interior acoustics
Each STUDIOBOX acoustic element has a double-shell construction. The outer and inner shells are each connected by a decoupled frame. Tongue and groove as well as double seals in the joints ensure the highest degree of sound-proofness of the mounted sound test chamber. The elements are joined together using toggle locks.
Doors and windows
The door - a STUDIOBOX design - is matched to the modules. Double folds with all-round seals and a quad lock prevent unwanted sound transmission.
The windows are double-glazed with panes of different thickness, the panes are decoupled from the frame with foam rubber bands. The modules have the same sound insulation quality as full wall elements. Detailed views
Factors influencing sound insulation
Building acoustics deals with the influence of structural conditions on sound propagation between rooms in a building or between the interior of the house and the outside world.
The determining variables for successful sound insulation are briefly described below.
Quality of the soundproof booth
This is where material selection, design and production quality count:
- the mass per unit area, the weight of the acoustic element as a separating component
- the dynamic stiffness of the materials used
- element size, strength and filling
- the combination of materials to each other
- the construction of the individual element and the resulting vibration behaviour
- the joining technology
- the quality of processing
Nature of the sound source
The type of sound source is another influencing factor. Important parameters are pitch (frequency), level and peaks. Diversity of frequency ranges, e.g. of orchestral instruments. The insulation of low frequencies always requires a higher effort.
Quality of the building
In general, the more massive the single-shell wall on site, the less noise arrives on the other side.
This results in different starting conditions before the measure is implemented, which are to be included in the considerations in advance.
Acoustics and acoustic solutions are always relative and not absolute. Isolation booths have a sound-insulating effect.
Measurement of the airborne sound
insulation of a completely assembled booth
Airborne sound insulation between two rooms in a building is determined in acc. with DIN EN ISO 16283. The studio box is either the transmitting or receiving room, depending on the direction of the measurement. The measured airborne sound insulation as an essential feature of the installed sound insulation booth depends on the frequency and can be converted into a single variable Dn, w to characterise acoustic performance. However, the individual measured values per frequency range should always be analysed to evaluate the quality of a booth. The single number specification has only limited informative value and is not sufficient for the assessment of the sound insulation quality of the construction.
Determination of standard sound level difference
Measurement of a single element in the laboratory
R and Rw is a pure laboratory value for the representation of the sound insulation quality of a component. Here, a single acoustic element is measured in the door test frame of the acoustic laboratory. This parameter provides information on the quality of the individual element, but not of the fully assembled sound enclosure.