Guide
How quiet is an acoustic pod?
Lull pods reduce speech by up to 30.5 to 32.9 dB, which puts them in Class A, the top rating under ISO 23351-1. Here's what that means in practice.
Ratings
Speech reduction by pod.
Measured under ISO 23351-1. The figure depends on the glass and solid wall layout.
| Lull Call | Up to 30.5 dB, Class A |
|---|---|
| Lull Focus | Up to 31.4 dB, Class A |
| Lull Meet 2 | Up to 32.9 dB, Class A |
| Lull Meet 4 | Up to 32.9 dB, Class A |
What the decibels mean
Speech level reduction is how much quieter a conversation inside the pod is outside it. As a rule of thumb, every 10 dB reduction sounds about half as loud, so a 30 dB reduction cuts a normal conversation to a small fraction of its loudness.
What the classes mean
ISO 23351-1 grades pods from Class A (30 dB or more) down through B, C and D. Class A is the highest. More solid wall and less glass usually gives a higher figure.
At a busy show
A loud hall is not silent from inside a pod, but conversations inside stay private and calls are clear. For recordings, choose solid walls on the noisiest sides.
Planning an event?
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