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.
The Science of Hearing. The human hearing range is between 20 to 20,000 Hz. There is considerable variation. in the hearing range between individuals. Most young people can hear up to 18,000. Hz. Our ability to hear high frequencies declines with age. By the age of 55 some men. can't hear above 5,000 Hz and some women canât hear above 12,000 Hz. Women tend. to have better hearing than men at high frequencies.