Patent ID: 6373927
Filing Date: 2002-04-16
Classification: H04Q,H04R

Abstract:
A portable audio transmission CODEC comprising in combination:an analog modem; a wideband coder for coding an input audio signal into a digital signal to be transmitted through a traditional analog telephone network, the digital signal having an optional transmission rate of 28.8 kilobits per second or less; and a decoder for decoding the digital signal that is received from the telephone network to provide an output audio signal with a frequency range greater than 4 kilohertz; wherein said analog modem receives an incoming audio signal from said standard telephone line on said telephone network, said modem converting said single incoming encoded analog signal to an incoming digital encoded digital signal; and wherein said portable CODEC further comprises a decoder decoding said incoming encoded digital signal from said analog modem based on a lossy decompression routine stored in memory to provide an analog output signal.