| 摘要 |
PURPOSE: A noise elimination device is provided to eliminate interference between signals of a speaker and a microphone using an extra channel, thereby reliably eliminating noise generated in voice communication. CONSTITUTION: A noise elimination device(100) includes a speaker(110), a microphone(130), and an echo elimination unit(150). An external microphone(230) outputs a first signal. The first signal is inputted to the speaker. The microphone outputs a second signal through different channel from a speaker channel. The second signal is provided to an external speaker(210). The echo elimination unit eliminates interference between the first signal and the second signal. |
