How do analog telephones convert sound waves?
Analog telephones convert sound waves into electrical pulses by passing current through a carbon granule-filled chamber that expands or contracts using a sound sensitive diaphragm. Inside the telephone receiver is a magnet wrapped with wire. Near the magnet is another diaphragm that fluctuates, depending on the magnetic pull. The resulting vibration creates sound waves that match the electrical current fluctuations in order to reproduce the sound of the speaker’s voice. 7. What is the purpose of sidetone? You may have noticed a slight feedback when you ve talked on the phone. This is intentional, to prevent a person from talking too loudly into the phone. Another name for this feedback is side tone. Digital Telephone Digital technology is reshaping many of our electronic devices, and the telephone is no exception. Digital telecommunications rely on the binary system of data exchange instead of analog electrical pulses. 8. Why were cellular phones rarely used in the 1980’s after their i
