Spectrum:
Audible frequency:
- It is the range of electromagnetic radiations and frequency bands used to transmit sound, data, and video across the country.
- It is what carries voice between cell phones, television shows from broadcasters to your TV, and online information from one computer to the next, wirelessly.
- Respective countries have their own wireless spectrum with ranges up to 300 GHz.
- The wireless spectrum frequencies used in communication are regulated by national organizations, which specify which frequency ranges can be used by whom and for which purpose.
- The wireless technology has created divisions in spectrum allocation. The International Telecommunications Union (ITU) divides the world into three different regions that influence wireless signal propagation:
- Region 1 : Europe, Africa, parts of the Middle East and Northern Asia
- Region 2 : The Americas, Caribbean and Hawaii
- Region 3 : Asia, Southeast Asia, the Pacific Islands, Australia and New Zealand
Why we use wireless spectrum:
- Increased efficiency - Improved communications leads to faster transfer of information within businesses and between partners/customers.
- You are rarely out of touch - We don't need to carry cables or adaptors in order to access office networks.
- Reduced costs - Relative to 'wired', wireless networks are, in most cases, cheaper to install and maintain.
Audible frequency:
- An audible frequency or audio frequency is characterized as a periodic vibration whose frequency is audible to the average human.
- The generally accepted standard range of audible frequencies for humans is 20 to 20,000 Hz, although the range of frequencies individuals hear is greatly influenced by environmental factors.
- Some of the common audible frequencies of animals.