Patent ID: 7062336

Claim:
A method for time-divisionally outputting a plurality of voice signals, comprising the steps of: generating the voice signals, wherein the voice signals are digital signals; transmitting the voice signals through a plurality of channels, wherein each of the digital voice signals corresponds to one of the channels; time-divisionally sampling the digital voice signals according to a periodic channel selecting signal to generate a multi-channel sampled signal; sending the multi-channel sampled signal to a pulse width modulator to generate an output voice signal by adjusting the magnitude of the multi-channel sampled signal; causing the pulse width modulator to generate based on the multi-channel sampled signal, pulses whose widths represent amplitudes of the output voice signal, converting the pulses corresponding to the multi-channel sampled signal to an analog output voice signal; and amplifying the magnitude of the output voice signal; and outputting the output voice signal.