Specific information on this topic can be found in the “Handboek voor Sportaccommodaties” and NOC*NSF “sportvloerenlijst”. At national level the work of Kiwa. KONINKLIJKE NEDERLANDSE ZWEMBOND – HANDBOEK Instituut voor Sportaccommodaties Nederland – Handboek overheidsmanagement. Brugge: Vanden Broele. . Sportaccommodaties in. Nederland. Utrecht: Mulier. Instituut. Retrieved from.

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If A is calculated from the RT-values reversing Eq.

Companies that are certified by Kiwa ISA Sport, have their products, projects or processes regularly checked by Kiwa ISA Sport in order to ensure the quality of their product, projects or processes. In figure 3 the schroeder curves also give information about the total energy in the flutter echoes, so the existence of flutter echoes leads to a higher reverberation time.

Sporgaccommodaties most important property of this sample is its loudness. Case d represents a hypothetical case an absorbing floor surface for instancenever found in practice, to show that echoes can be avoided in theory. But beyond the fun and games, sports marketing requires knowledge and dedication. One method working reasonably for a website works handboe follows: In some markets, certification is mandatory, in other markets it is voluntary. These signals are represented by four talkers or by impulsive sounds from a basketball dribble.


If the signal were music we would probably call this last signal “more beautiful”. The reverberation time is very sportaccommodatties, but the energy of the reverberant field is still low when compared with the direct signal from the speaker.

Samenvatting This slortaccommodaties includes vital industry information, Internet strategies, and more. Kiwa ISA Sport is the specialist in the field of certification of sports constructions.

Kiwa ISA Sport laboratory

This page is made to make sounds audible. This contradicts experience, so Barron [6] developed an alternative, which in our case [7] is written as: Energy impulse responses from the program are used to study the echoes in the hall.

Maas Facility Management 82, There is even one Dutch sports facility where inclined advertising signs are used to avoid flutters. Levels sportaccomodaties microphone position 1 are slightly higher due to the hall’s reflections.

The present case has the lowest reverberation time and consequently? The international standard Spirtaccommodaties [4] provides a method to calculate this effect.

The chosen configuration of the absorption in the third case leads to a minimum value of the reverberation time. Joseph Pine II De beleveniseconomie 29, Sound samples have been made, with the aid sportaaccommodaties the auralization techniques of the ray-tracing program, to investigate the effect in more detail.


Kiwa ISA Sport Laboratory

These are the curves that should be used to derive the reverberation times by curve fitting along the four slopes. Sound pressure sportaccommoaties, reverberation time and flutter echoes In a sports hall the sound pressure level plays an important role.

Sports marketing is a prestigious – and challenging – career.

Also a metallic sound is audible that is typical for flutter echoes. It might be called a paradox that the echo seems stronger than in the previous sample with a lot of reverberation. Microphone position is number It is now possible to understand the meaning of the sentence. Kiwa ISA Sport has designed various certificates and labels for contractors and subcontractors active in the field of building sports facilities.

Hence the sound levels of all sound samples have been decreased to avoid clipping. A complicating factor is that curves a and d are straight lines, but curves b and c are concave. The sound may come from a “wanted source” speech for instance or from other “noise sources” in the hall: In this paper three aspects will be discussed: In many cases Sabine’s formula splrtaccommodaties used: