ACOUSTIC PERIMETER FOR REDUCING NOISE TRANSMITTED BY A COMMUNICATION DEVICE IN AN OPEN-PLAN ENVIRONMENT

摘要

The amount of far-field noise transmitted by a primary communication device in an open-plan office environment is reduced by defining an acoustic perimeter of reference microphones around the primary device. Reference microphones generate a reference audio input including far-field noise in the proximity of the primary device. The primary device generates a main audio input including the voice of the primary speaker as well as background noise. Reference audio input is compared to main audio input to identify the background noise portion of the main audio signal. A noise reduction algorithm suppresses the identified background noise in the main audio signal. The one or more reference microphones defining the acoustic perimeter may be included in separate microphone devices placed in proximity to the main desktop phone, microphones within other nearby desktop telephone devices, or a combination of both types of devices.

主权项

1. A system, comprising:
a primary communication device capable of transmitting a speaker's voice from the primary communication device to a receiving communication device, wherein the primary communication device includes a main microphone; and a processor configured to:
receive a main audio input from the main microphone;receive a reference audio input from each of a plurality of the reference microphones, at least a plurality of the plurality of reference microphones defining an acoustic perimeter with respect to the primary communication device, wherein the reference audio input includes far field noise; andgenerate a reduced-noise audio output having suppressed far field noise based on a comparison of the reference audio inputs to the main audio input.