Audio communication system

摘要

An audio communication system includes a first analog/digital convertor, a second analog/digital convertor, and an echo canceller. The first analog/digital convertor converts an audio signal, which is input from a microphone, to a data signal. The second analog/digital convertor that converts an audio signal, which is input from an auxiliary input terminal, to a data signal. When an audio signal transmitted from the outside is received and output from a speaker, the echo canceller prevents an output of the speaker from being input through the microphone and echoed back to a recipient or remote device. An operating frequency of the echo canceller is relatively lower than a sampling frequency of the second analog/digital convertor.

主权项

1. An audio communication system comprising:
a first analog/digital convertor that converts a first audio signal to a first data signal, the first audio signal being input from a microphone; a second analog/digital convertor that converts a second audio signal to a second data signal, the second audio signal being input from an auxiliary input terminal; and an echo canceller that, when a third audio signal transmitted from outside is received and output from a speaker, prevents an output of the speaker from being input through the microphone and echoed back to a recipient or remote device, wherein an operating frequency of the echo canceller is lower than a first sampling frequency of the second analog/digital convertor.