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Good Hearing?
A typical person with good hearing can hear from about 20Hz to 20kHz (the audio bandwidth). A person's voice will usually range from 500Hz to 2kHz...more

Reverberation Time
The reverberation time of a room is defined as the time it takes for sound to decay by 60 dB after an abrupt termination...more
Part L1B
Conservation of fuel and power in Existing Dwellings

Our other services include:
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CSH can also be known as:
Sustainable Homes, Code for Sustainable Homes Daylight Calculation, Code Assessment, C4SH, Code for Sustainable Homes,
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