Medium upholstered chair, unoccupied, front side of seat back 2.5 cm, rear side of seat back 0, top of seat bottom 5 cm, arm rests solid, N.Y., Avery Fisher Hall – PTB – Physikalisch-Technische Bundesanstalt | Acoustic Index

Acoustic Index

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Data source

PTB reference data

Physikalisch-Technische Bundesanstalt

Source: JASA 104 (6) Dec 1998

Medium upholstered chair, unoccupied, front side of seat back 2.5 cm, rear side of seat back 0, top of seat bottom 5 cm, arm rests solid, N.Y., Avery Fisher Hall

PTB reference data

Original description

Material properties

Thickness: 2.5 cm (front of seat back), 5 cm (top of seat bottom)

Application: seating

Measurement data

Sound absorption

ISO 354 – reverberation chamber

αw

0.62

Frequency values

αp nach ISO 11654

125 Hz

0.60

250 Hz

0.65

500 Hz

0.65

1000 Hz

0.65

2000 Hz

0.60

4000 Hz

0.55

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Method (354): Measured

Acoustic Index

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