Keep in mind, however, that in a choice between decibel level and frequency, decibel level is usually the deciding factor. In most practical cases, the difference between one whistle's frequency and another will be minimal. (The Storm and Windstorm whistles produce a 3.15 KHz tone, if I remember correctly.) However, decibels are logarithmic, and 105 dB (Storm Whistle) is a little over 3 times louder than 100 dB (competition).