Invention Grant
- Patent Title: Method, apparatus, and computer-readable media utilizing residual echo estimate information to derive secondary echo reduction parameters
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Application No.: US17130951Application Date: 2020-12-22
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Publication No.: US11297178B2Publication Date: 2022-04-05
- Inventor: Richard Dale Ferguson , Linshan Li , Mahdi Javer , Nicholas Alexander Norrie
- Applicant: Nureva, Inc.
- Applicant Address: CA Calgary
- Assignee: Nureva, Inc.
- Current Assignee: Nureva, Inc.
- Current Assignee Address: CA Calgary
- Agency: Katten Muchin Rosenman LLP
- Main IPC: H04M3/00
- IPC: H04M3/00 ; H04M3/56 ; H04M9/08

Abstract:
Method, apparatus, and program code embodied in computer-readable media, for providing enhanced echo suppression in a conferencing system having at least one microphone and at least one speaker. At least one microphone input signal is received, and at least one speaker input signal is provided. At least one processor has at least one primary echo-suppressor and at least one secondary echo-suppressor. The at least one primary echo-suppressor receives (i) the microphone input signal(s) and (ii) the speaker input signal(s). The at least one primary echo-suppressor provides at least one echo-suppressed microphone signal. The at least one secondary echo-suppressor receives the at least one echo-suppressed microphone signal and provides an output signal. The at least one processor provides the at least one echo-suppressed microphone signal to the at least one secondary echo-suppressor without providing the at least one speaker input signal directly to the at least one secondary echo-suppressor.
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