Nureva, Inc.

Linshan Li

Richard Dale Ferguson

Mahdi Javer

Nicholas Alexander Norrie

Aleksander Radisavljevic

Kael Blais

A system and method are provided for dynamic sound mask adjustment. A sound mask is used for obtaining an impulse response measurement that adjusts a generated sound mask dynamically based on real-time ambient noise parameters, while maintaining echo canceller calibration performance. The system includes a dynamic sound mask generator that includes a noise accumulator and monitor that includes a processor and memory including instructions executed by the processor for performing the dynamic sound mask adjustment. If the sound mask is not in the hysteresis range, the current sound mask level and iteration update rate are adjusted. if the sound mask is in the hysteresis range, the current sound mask level and iteration update rate are maintained.

System for dynamically adjusting a soundmask signal based on realtime ambient noise parameters while maintaining echo canceller calibration performance

A system is provided for positional based automatic gain control to adjust one or more dynamically configured combined microphone array in a shared 3D space. The system includes a combined microphone array including one or more of individual microphones and/or microphone arrays and a system processor communicating with the combined microphone array. The system processor is configured to obtain predetermined locations of the microphones throughout the shared 3D space, obtain predetermined coverage zone dimensions based on the locations of the microphones, populate the coverage zone dimensions with virtual microphones, identify locations of sound sources in the shared 3D space based on the virtual microphones, compute positional based gain control (PBGC) parameter values for virtual microphones based on the locations of the virtual microphones, and combine microphone signals into desired channel audio signals by applying the PBGC parameters to adjust microphones to control positional based microphone gains based on the location information of the sound sources.

System for dynamically deriving and using positional based gain output parameters across one or more microphone element locations

Method, apparatus, and computer-readable media to manage undesired sound sources in microphone pickup/focus zones preferably mitigates one or more of the undesired sound source(s) in a space having a plurality of microphones and at least one desired sound source. Preferably, at least one microphone input receives plural microphone input signals from the plurality of microphones in the space. Preferably, the least one processor is coupled to the at least one microphone input and receives the plural microphone input signals. Preferably, the at least one processor determines plural micro-zones in the space. Preferably, the at least one processor determines a threshold sound field level for each micro-zone based on received plural microphone input signals that correspond to the one or more undesired sound source(s). Preferably, the at least one processor recognizes a desired sound source when received plural microphone input signals exceed one or more threshold sound field level.

Method, apparatus and computer-readable media to manage semi-constant (persistent) sound sources in microphone pickup/focus zones

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.

Growing community of inventors

Calgary, Canada

Linshan Li