Invention Grant
- Patent Title: Acoustic echo control for automated speaker tracking systems
- Patent Title (中): 自动扬声器跟踪系统的声学回声控制
-
Application No.: US14098064Application Date: 2013-12-05
-
Publication No.: US09385779B2Publication Date: 2016-07-05
- Inventor: Haohai Sun
- Applicant: CISCO TECHNOLOGY, INC.
- Applicant Address: US CA San Jose
- Assignee: Cisco Technology, Inc.
- Current Assignee: Cisco Technology, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Lempia Summerfield Katz LLC
- Main IPC: H04B3/20
- IPC: H04B3/20 ; H04R29/00 ; A61F11/06 ; G10K11/16 ; H03B29/00 ; H04R3/00 ; H04B3/23 ; G10L25/51 ; H04N7/15 ; G10L21/0208

Abstract:
A processing system can include a tracking microphone array; audio tracker circuitry connected to the tracking microphone array to track an audio source based on an audio input from the array; communication microphones; and a processor. The processor can include audio circuitry to receive an audio input from the communication microphones and process the audio input to apply one or more of acoustic echo cancellation (AEC) and acoustic echo suppression (AES) processing to the audio input. The processor can further include calculating circuitry to calculate a ratio of signal power after and before the AEC and/or the AES processing, and control circuitry to generate an acoustic echo presence indication based on the ratio calculated by the calculating circuitry. The processor can transmit, via transmitting circuitry, the acoustic echo presence indication to an audio tracking device via a data communication channel between the processor and the audio tracker.
Public/Granted literature
- US20150110282A1 ACOUSTIC ECHO CONTROL FOR AUTOMATED SPEAKER TRACKING SYSTEMS Public/Granted day:2015-04-23
Information query