Method and apparatus for acoustic echo cancellation in a communication system providing TTY/TDD service
    1.
    发明申请
    Method and apparatus for acoustic echo cancellation in a communication system providing TTY/TDD service 审中-公开
    提供TTY / TDD服务的通信系统中用于声学回声消除的方法和装置

    公开(公告)号:US20070274514A1

    公开(公告)日:2007-11-29

    申请号:US11826882

    申请日:2007-07-19

    IPC分类号: H04B3/20 H04M9/08

    摘要: A method and apparatus are disclosed for canceling acoustic echo generated during transmission of text information in a communication system supporting a TTY/TDD service. When a mobile-to-land call is established between a mobile subscriber and a PSTN subscriber, a decoder notifies an encoder of detection of TTY/TDD text in a BS vocoder. The encoder then transmits a packet having silence information, which prevents acoustic echo reproduction of the text in the TTY/TDD device.

    摘要翻译: 公开了一种用于消除在支持TTY / TDD服务的通信系统中在传送文本信息期间产生的声学回声的方法和装置。 当在移动用户和PSTN用户之间建立移动对陆地呼叫时,解码器通知编码器在BS语音编码器中检测到TTY / TDD文本。 然后,编码器发送具有静音信息的分组,其防止TTY / TDD设备中的文本的声学回声再现。

    Method and apparatus for acoustic echo cancellation in a communication system providing TTY/TDD service
    2.
    发明授权
    Method and apparatus for acoustic echo cancellation in a communication system providing TTY/TDD service 有权
    提供TTY / TDD服务的通信系统中用于声学回声消除的方法和装置

    公开(公告)号:US07397772B2

    公开(公告)日:2008-07-08

    申请号:US10347233

    申请日:2003-01-21

    摘要: A method and apparatus are disclosed for canceling acoustic echo generated during transmission of text information in a communication system supporting a TTY/TDD service. When a mobile-to-land call is established between a mobile subscriber and a PSTN subscriber, a decoder notifies an encoder of detection of TTY/TDD text in a BS vocoder. The encoder then transmits a packet having silence information, which prevents acoustic echo reproduction of the text in the TTY/TDD device.

    摘要翻译: 公开了一种用于消除在支持TTY / TDD服务的通信系统中在传送文本信息期间产生的声学回声的方法和装置。 当在移动用户和PSTN用户之间建立移动对陆地呼叫时,解码器通知编码器在BS语音编码器中检测到TTY / TDD文本。 然后,编码器发送具有静音信息的分组,其防止TTY / TDD设备中的文本的声学回声再现。