Techniques are described for the measurement and analysis of ground-borne structural vibration and air-borne low frequency noise in buildings caused by road traffic. A measurement system comprising piezoelectric quartz crystal accelerometers and condenser microphones was used, and signals from these transducers were recorded on a magnetic tape recorder. Analysis of the recorded data was carried out using 1/3 octave frequency bands over the range from 3.15 to 500 Hz. Long term statistical averages and single vehicle peak event frequency spectra were obtained from measurements taken in a terraced property adjacent to a busy city road. The results showed that at this site low frequency noise, (in the range 50 to 200 Hz) was responsible for most of the floor and window vibrations inside the house. (Author/publisher)
Samenvatting