Listening Room - stereo
This room is constructed as a box in box, and conforms IEC60268-13 standard, which describes an "average living room" acoustically. The reverberation time is thus approximately 0.4 seconds, but this can be adjusted by removing parts of the ceiling or varying the wall materials. The Listening room is used for both listening tests and measurements. During listening tests the subjects are typically asked to estimate qualities of what they hear, e.g. evaluation of hi-fi loudspeakers or microphone recording techniques. During a listening test the equipment is often hid behind curtains so that the subjects are not affected by visual impressions. The room is equipped with a set of specially tuned built-in loudspeakers. The room can also be used for studies of sound propagation in an "average living room".
B4-Listening Room
Here is a scan of the original paperdrawing from 1986. It shows the listening room in B4.
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