Calculate the reverberation time of a living room

Room

Room use
Dimensions
Volume2,880 cu ftFloor area320 sq ftWall area648 sq ft
Surfaces
Floor
Walls
Ceiling
Furnishings
  • Wooden chair (unoccupied)
    pcs.
  • Sofa / upholstered bench
    pcs.
  • Table (wood)
    pcs.
  • Shelf, full (books/binders)
    sq ft
  • Double glazing (insulating glass)
    sq ft
  • Curtain, light (flat against wall)
    sq ft
  • Wooden door (closed)
    sq ft

Typical furnishings for this use. Adjust whatever differs in your room.

Current state2.01s
With measures–No measures yet
1.4 s above targetToo reverberant. Add absorbers.
Reverberation time by frequency
Terms of use

Measures

No measures yet

Add acoustic products and see the effect instantly.

There is no standard for living rooms, but reliable values from practice: between 0.4 and 0.6 s a living room sounds calm. The calculator starts with 78 m³ (Living room, open kitchen), guide value 0.50 s (0.40 to 0.60), and suggests matching acoustic pictures or rafts from 2,080 products with measured data.

Guide values by standard

No standard names a target value for living rooms; the table shows the value from practice and, where available, requirements of other countries.

StandardUse50 m³80 m³120 m³
Experience values, no standardexperience valueLiving room, open kitchen0.50 s (0.40 to 0.60)0.50 s (0.40 to 0.60)0.50 s (0.40 to 0.60)
LEED v4, acoustic performanceLEED v4 / v4.1 EQ Credit: Acoustic PerformanceApartment, condominium (v4 only)at most 0.60 sat most 0.60 sat most 0.60 s

Typical measures

  • Acoustic pictures or fabric panels opposite the sofa and next to the TV.
  • One ceiling raft above the dining table in the open kitchen.
  • Carpet, curtains and shelves help at high frequencies, low frequencies need mounting depth.
  • For home cinema, try the use home office or music room.

Acoustic pictures, panels and ceiling rafts with measured data

All products in the search

Frequently asked questions

What reverberation time is pleasant in a living room?

Values from practice lie between 0.4 and 0.6 s. An empty living room with parquet and glass is often at 1 s; sofa, carpet and curtains bring it to 0.7 to 0.8 s.

Why does my open kitchen echo?

Large glass areas, hard floors and little textile reflect, and the large volume lengthens the reverberation. A ceiling raft above the dining table and one or two acoustic pictures are often enough.

How many acoustic pictures do I need?

A living room of 80 m³ often lacks 6 to 10 m² of absorption area, so two or three acoustic pictures of 1.2 × 0.8 m with αw 0.8 or one ceiling raft.

Other room types

Formulas, DIN 18041 and worked example on the calculator page