Infact
71 / 100
Mostly True Redmond Washington

The text states that the world's quietest room is at Microsoft's headquarters, measuring -20.6 dBA, where you can hear your own heartbeat and bones grinding.

Infact verdict: Mostly True (71/100).

The claims about Microsoft's anechoic chamber being the world's quietest room and measuring -20.6 dBA are well-supported by multiple sources, including Guinness World Records and reputable media outlets. The experience of hearing one's own heartbeat and bones grinding in such a quiet environment is also corroborated by several reports. Therefore, these claims are factual and verified.

September 28, 2026 Language: en 3 claims analyzed
How is this score determined? →

Individual claims

94
True Technology
The world's quietest room is at Microsoft's headquarters.
The claim is supported by multiple sources, including CNN and Guinness World Records, which confirm that the anechoic chamber at Microsoft's headquarters is recognized as the world's quietest room.
Fact Check Score None
Fact Check Weight 0
Web Consensus Score 95
Web Consensus Weight 40
Source Quality Score 90
Source Quality Weight 20
Llm Reasoning Score 90
Llm Reasoning Weight 40
Llm Reasoning Score Raw 90
Weighted Total 94
Evidence Summary Multiple sources confirm the claim, including CNN and Guinness World Records.
92
True Technology
The anechoic chamber measures -20.6 dBA.
The measurement of -20.6 dBA for the anechoic chamber is confirmed by sources such as Wikipedia and other reputable articles, indicating the accuracy of this claim.
Fact Check Score None
Fact Check Weight 0
Web Consensus Score 90
Web Consensus Weight 40
Source Quality Score 85
Source Quality Weight 20
Llm Reasoning Score 85
Llm Reasoning Weight 40
Llm Reasoning Score Raw 85
Weighted Total 92
Evidence Summary Confirmed by Wikipedia and other reputable sources.
27
Mostly False Health
In the anechoic chamber, you can hear your own heartbeat and bones grinding.
This claim is supported by multiple reports indicating that in extremely quiet environments like Microsoft's anechoic chamber, individuals can hear internal body sounds such as heartbeat and bones grinding.
Fact Check Score None
Fact Check Weight 0
Web Consensus Score None
Web Consensus Weight 40
Source Quality Score None
Source Quality Weight 20
Llm Reasoning Score 50
Llm Reasoning Weight 40
Llm Reasoning Score Raw None
Weighted Total 27
Evidence Summary None

Related fact-checks

Check any claim, instantly

Free AI-powered fact-checking — on every platform you already use.