Invention Grant
- Patent Title: Communication terminal and communication method
- Patent Title (中): 通信终端和通信方式
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Application No.: US13590243Application Date: 2012-08-21
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Publication No.: US08694326B2Publication Date: 2014-04-08
- Inventor: Shuji Miyasaka , Kosuke Nishio , Ichiro Kawashima
- Applicant: Shuji Miyasaka , Kosuke Nishio , Ichiro Kawashima
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: JP2010-039337 20100224
- Main IPC: G10L21/00
- IPC: G10L21/00 ; H04B1/38 ; H04M1/00 ; H04M3/42 ; H04M9/08 ; G06F3/00 ; G06F15/16 ; G06F11/00

Abstract:
A communication terminal includes a decoder which decodes an input bitstream received from another communication terminal, to generate an output audio signal and outputs the generated output audio signal to a speaker; and an echo canceller which obtains an input audio signal representing sound captured by a microphone placed in a space to which the speaker outputs the sound, and removes, for respective subbands, an echo component included in the obtained input audio signal and corresponding to the output audio signal, to generate an audio signal for transmission. An encoder codes the audio signal for transmission to generate an output bitstream and transmits the generated output bitstream to another communication terminal; and a control unit controls, for the respective subbands, echo cancellation processing according to a reproduction band of at least one of the output audio signal and the audio signal for transmission.
Public/Granted literature
- US20120323583A1 COMMUNICATION TERMINAL AND COMMUNICATION METHOD Public/Granted day:2012-12-20
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