Identifying Acoustic Leaks

St Andrews Hall is a 14th Century building in central Norwich, England, and is owned by Norwich City Council. The hall is a popular venue for concerts and other licensed events but in recent years has had problems with noise from events. Residential flats approximately 35 meters from the hall have experienced unacceptable sound levels limiting the use of the hall especially for amplified music. A sound limiter is installed to cut off power to the stage and PA system when internal levels reach set limits. The limits are low which makes the venue unpopular with many artists.