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Anechoic boxes and soundproof rooms

Anechoic box characteristics

When measuring sound, a "sound insulation layer" with sufficient sound insulation performance is necessary for cutting out unwanted sounds such as external noise. At the same time, a "sound absorption layer" with sufficient sound-absorbing performance to cut unwanted reflection sounds is necessary.
With small measurement targets, using an anechoic box facilitates measurements and provides more precise results. Nihon Onkyo Engineering's lineup of thin, steel boxes with a large sound insulation performance and light-weight, wooden boxes that are slightly thicker provides a variety of dimensions for responding to various requests.

Soundproof room characteristics

Soundproofing boxes are the optimum solution when strict sound absorption performance like that of anechoic boxes is not necessary but decent sound insulation performance is required for measurement. Compared with an anechoic box, which has a sound absorptive wedge as the sound absorptive layer, Nihon Onkyo Engineering's soundproof room features a 32 kg/m3, 50 mm thick flat glass wool plate. As with anechoic boxes, Nihon Onkyo Engineering's lineup of thin, steel rooms with a large sound insulation performance and light-weight, wooden boxes that are slightly thicker provides a variety of dimensions for responding to various requests.

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