The frequency range for a telephone is between 500 Hz and 400 Hz. Why does a telephone not do a very good job of transmitting music?
1) The frequency range of a telephone is somewhat broader: “First, a quick background. In order to squeeze more phone circuits into a single wire, the phone company limits the frequency response of phone calls to between, roughly, 350 cycles and 3,500 cycles per second. Since normal human hearing ranges from 20 cycles to 20,000 cycles per second, the limited frequency response in a telephone call gives it it’s unique sound.” Source and further information: http://www.larryjordan.biz/articles/lj_phone.html “Telephone modem example: A V.92 modem for the telephone network can transfer 56,000 bit/s downstream and 48,000 bit/s upstream over an analog telephone network. Due to filtering in the telephone exchange, the frequency range is limited to between 300 hertz and 3,400 hertz, corresponding to a bandwidth of 3400 − 300 = 3100 hertz. ” Source and further information: http://en.wikipedia.org/wiki/Spectral_efficiency 2) The frequency range for musical notes is approximatively from 16.35 Hz
