NPLs choir sing you a Christmas card

YouTubeNPL’s Choir sing Christmas carols as part of this years NPL Christmas card.

In true NPL style, the choir take us through various effects on their carols caused by different acoustic testing rooms on the NPL grounds including the listening room (replica living room used to test air conditioning units), the anechoic chamber (reduced echoes) and the reverberation room (used to measure the sound absorption of materials).

[youtube=http://www.youtube.com/watch?v=DE6xcI_eD0Q]

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