A person recently asked me what I meant by the term business system.. I thought others might like to know a definition that works for me. A system is a procedure, process, method, or course of action designed to achieve a specific result.
The voiced speech of a typical adult male will have a fundamental frequency from 85 to 180 Hz, and that of a typical adult female from 165 to 255 Hz. Thus, the fundamental frequency of most speech falls below the bottom of the voice frequency band as defined above.
Music Frequency. With this concept in mind, let us bring our attention to the frequency of the music we listen to. Most music worldwide has been tuned to A=440 Hz since the International Standards Organization (ISO) promoted it in 1953.