ToolHuts

Praktische tools voor nauwkeurig werk

RT60 & Nagalmtijd Calculator

Schat de nagalmtijd volgens Sabine en de totale absorptie die nodig is voor een aanpasbare doelwaarde.

m
m
m
sabins
s
Estimated RT600.29s
Room volume62.4m3
Absorption for 0.40 s25.1sabins
Additional absorption0.0sabins

A metric sabin is one square metre of perfectly absorbing surface. Real materials contribute area multiplied by their frequency-dependent absorption coefficient.

Werking

How to use it: enter internal room dimensions and estimated total absorption at the frequency band of interest. Set a target to estimate how much absorption that target requires.

Formula. Sabine RT60 = 0.161 x room volume / total absorption.

Example. A 62.4 m3 room with 35 sabins has an estimated RT60 of 0.29 seconds.

Voorbeeld met huidige invoer

Het resultaat hierboven gebruikt precies deze waarden. Deze momentopname wordt bij het afdrukken opgenomen om de uitvoer met de oorspronkelijke metingen te controleren.

Room length
5.5 m
Room width
4.2 m
Room height
2.7 m
Total absorption
35 sabins
Target RT60
0.4 s

Hoofdresultaat: Estimated RT60: 0.29 s.

Vóór gebruik van het resultaat

  • Measure from the datum or reference edge described by this tool, and do not mix inside, outside and centerline dimensions.
  • Keep inputs in the displayed units and preserve more precision than the final cutting or purchasing tolerance requires.
  • When the result is close to a limit, verify it with a test piece, field measurement, manufacturer drawing or qualified project professional.

Beperkingen

Sabine assumes a diffuse sound field and reasonably even absorption. Small rooms, sparse treatment, low frequencies and highly absorptive rooms can depart substantially. Use band-specific material data and confirm with a calibrated decay measurement.

Veelgestelde vragen

What RT60 should a home theater have?

There is no single universal target. Room size, listening use and measurement band matter, so compare against a considered design target rather than treating one number as a pass or fail.