Invention Grant
- Patent Title: Conference terminal and feedback suppression method
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Application No.: US17475309Application Date: 2021-09-14
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Publication No.: US11641545B2Publication Date: 2023-05-02
- Inventor: Po-Jen Tu , Jia-Ren Chang , Kai-Meng Tzeng
- Applicant: Acer Incorporated
- Applicant Address: TW New Taipei
- Assignee: Acer Incorporated
- Current Assignee: Acer Incorporated
- Current Assignee Address: TW New Taipei
- Agency: JCIPRNET
- Priority: TW110132528 20210901
- Main IPC: H04R3/00
- IPC: H04R3/00 ; H04R1/32 ; H04M3/56 ; H04R3/02

Abstract:
A conference terminal and a feedback suppression method are provided. In the method, a transmitting sound signal is divided into sub sound signals of multiple frequency bands. Different sub sound signals correspond to different frequency bands. An interfered frequency band corresponding to the howling interference is detected according to the sub sound signals of those frequency bands. The power of the sub sound signal of the interfered frequency band increases along with time. The interfered frequency band is affected by the howling interference. An interference direction is determined according to multiple input sound signals received by the microphone array and merely pass through the interfered frequency band. A sound from the interference direction leads to the howling interference. A beam pattern of the microphone array is determined according to the interference direction. The gain of the beam pattern in the interference direction is reduced.
Public/Granted literature
- US20230069213A1 CONFERENCE TERMINAL AND FEEDBACK SUPPRESSION METHOD Public/Granted day:2023-03-02
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