I had to put this on the blog. Trying to create a sound similar to an actual foghorn, I have managed to produce this by manipulating the sound of a steamer’s hooter:
The SMBC Health and Safety Inspector took some readings from our recordings of local people reading from the archives; these, on a fairly quiet setting, gave a reading of 85 decibels at about two metres when played through the first two sections of the foghorn. This compares with about 130 decibels at one metre for an actual foghorn.
Just imagine. (I’m choosing my words very carefully here)