{"en":"Impedance tubes, dynamic stiffness and airflow resistivity benches, benchtop chambers. Characterising a material in house instead of sending every batch to an external laboratory.","it":"Tubi a impedenza, banchi per rigidita' dinamica e resistivita' al flusso, camere da banco. Caratterizzare un materiale in casa propria invece di mandarlo a un laboratorio esterno a ogni lotto."}
Repeatable samples on dense materials (rubber, felt, EPDM). Planned variants: 1 t, 3 t, 5 t.
Testing microphones, small sources and fans. Planned variants: 0.3 m3, 1 m3, 2 m3 — 100/200/300 mm wedges.
Random-incidence absorption on small samples, without a 200 m3 room. Planned variants: 1.2 m3, 3 m3, 6.5 m3.
A crooked cut is the leading cause of wrong measurements. Planned variants: 29 / 34 / 63 / 100 mm diameter — manual or press.
Underlay manufacturers pay an external laboratory for every batch. Planned variants: 200x200, 300x300 mm.
Not just absorption: transmission loss and transfer matrix of the material. Planned variants: 100 mm diameter, 34 mm diameter, modular 2-to-4 microphone version.
Alpha, impedance, TL, export for FEM/BEM solvers. Planned variants: single licence, laboratory, teaching.
Extension of the family already in the catalogue. Planned variants: small/large head, 0.5/1.0 m extension, floor version.
Impact-sound underlays: the figure the designer needs and cannot find today. Planned variants: 200x200 mm, 300x300 mm sample — 200/2000/4000 Pa load.
Characterising porous materials for prediction models. Planned variants: direct method, alternating method, 29/45/100 mm sample diameter.
Normal-incidence absorption and impedance on small samples. Planned variants: 100 mm diameter (approx. 50-1600 Hz), 63 mm (approx. 100-2700 Hz), 34 mm (approx. 500-6400 Hz), 29 mm (up to approx. 6.8 kHz).
Those who make them sell to laboratories, not to practices. Below that threshold the market is there to be created. Planned variants: 100 mm, 34 mm, twin set.
An input parameter for Johnson-Champoux-Allard models. Planned variants: 29 / 45 / 100 mm diameter.
The two boundary conditions the standard asks for. Planned variants: steel rigid, brass rigid, 300/500 mm anechoic wedge.
Two laboratories compared on the same sealed specimen. Planned variants: single, circulating kit of 5.
The edge of the sample decides the result: here it is standardised. Planned variants: 10 m2, 12 m2, open/closed edge.
The effect of the air gap behind the material, without improvised spacers. Planned variants: 0 / 10 / 20 / 30 / 50 / 100 mm depth — fixed or micrometer screw.
Check that the tube tells the truth before believing it. Planned variants: 30/50 mm melamine, 40/80 kg/m3 mineral wool, felt, PU — sets of 3 / 6 / 10.
Panels, glass, membranes: indicative TL without two coupled chambers. Planned variants: 200x200, 300x300, 500x500 mm aperture.
Samples cut with a knife rather than a punch. Planned variants: 100x100 mm, 60x60 mm, 40x40 mm.
Floor and ceiling measurements without holding it by hand. Planned variants: floor, wall, telescopic ceiling 2-4 m.
The hardest parameter to source in Italy. Planned variants: samples up to 50 / 100 mm thick.
Universities and technical institutes: the standing wave becomes visible. Planned variants: 100 mm diameter, 1 m / 1.5 m long, with or without a moving probe carriage.
50 Hz to 6.4 kHz coverage with one purchase and one piece of software. Planned variants: 100+34 mm, 100+29 mm, 63+29 mm.