Acoustic Privacy Calculator

Speech privacy class from partition STC and background noise.

Partition STC rating

Background noise (dB)

Speech effort (0=normal, 1=raised, 2=loud)

Speaker to wall (ft)

Partition area (sq ft)

Seal quality (%)

Tab to move between fields

Articulation Index

Privacy score (0-100)

100

Effective STC42

Transmitted speech (dB)14.3

SNR (dB)-20.7

Privacy class (1-3)3

STC improvement needed (dB)0

Absorption area needed (sq ft)0

How to Use This Calculator

Enter Partition STC rating, Background noise (dB), and Speech effort (0=normal, 1=raised, 2=loud).
Set Speaker to wall (ft), Partition area (sq ft), and Seal quality (%).
Review Articulation Index and Privacy score (0-100).
Use Effective STC and Transmitted speech (dB) to inform your decision.

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