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公开(公告)号：US20190166257A1
公开(公告)日：2019-05-30
申请号：US15827457
申请日：2017-11-30
Applicant: Cisco Technology, Inc.
Inventor： David William Nolan Robison , Kevin Lee Hughes , Feng Bao
IPC: H04M9/08 , G10L21/0208 , H04R1/08 , H04R1/22 , H04R1/28
Abstract: Presented herein is an audio endpoint for telecommunication operations with increased echo rejection. According to one example, the audio endpoint includes a housing body, an upper speaker assembly, a lower speaker assembly, and at least one microphone assembly. The upper speaker assembly is disposed near a top portion of the housing body and has an effective frequency range above a first frequency. The lower speaker assembly is disposed near a bottom portion of the housing body and has an effective frequency range below a second frequency. The microphone assembly includes a first microphone element and a second microphone element. The first microphone element is above the second microphone element so that they are vertically aligned. The first microphone element has an effective frequency range below the first frequency and the second microphone element has an effective frequency range above the second frequency.
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公开(公告)号：US10789935B2
公开(公告)日：2020-09-29
申请号：US16242257
申请日：2019-01-08
Applicant: Cisco Technology, Inc.
Inventor： Feng Bao , David William Nolan Robison , Tor A. Sundsbarm
IPC: G10K11/178 , H04R1/10
Abstract: In one example, a headset obtains a first audio signal including a user audio signal from a first microphone on the headset and a second audio signal including the user audio signal from a second microphone on the headset. The headset derives a first candidate signal from the first audio signal and a second candidate signal from the second audio signal. Based on the first audio signal and the second audio signal, the headset determines that a mechanical touch noise is present in one of the first audio signal and the second audio signal. In response to determining that the mechanical touch noise is present in one of the first audio signal and the second audio signal, the headset selects an output audio signal from a plurality of candidate signals including the first candidate signal and the second candidate signal. Headset provides the output audio signal to a receiver device.
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公开(公告)号：US10863035B2
公开(公告)日：2020-12-08
申请号：US15827457
申请日：2017-11-30
Applicant: Cisco Technology, Inc.
Inventor： David William Nolan Robison , Kevin Lee Hughes , Feng Bao
Abstract: Presented herein is an audio endpoint for telecommunication operations with increased echo rejection. According to one example, the audio endpoint includes a housing body, an upper speaker assembly, a lower speaker assembly, and at least one microphone assembly. The upper speaker assembly is disposed near a top portion of the housing body and has an effective frequency range above a first frequency. The lower speaker assembly is disposed near a bottom portion of the housing body and has an effective frequency range below a second frequency. The microphone assembly includes a first microphone element and a second microphone element. The first microphone element is above the second microphone element so that they are vertically aligned. The first microphone element has an effective frequency range below the first frequency and the second microphone element has an effective frequency range above the second frequency.
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Patent Agency Ranking
公开(公告)号：US20180167706A1
公开(公告)日：2018-06-14
申请号：US15454212
申请日：2017-03-09
Applicant: Cisco Technology, Inc.
Inventor： David William Nolan Robison , Kevin Lee Hughes , Feng Bao , Stephen Lee Ijams , Victor Manuel Sanchez , David M. Sanguinet
CPC classification number: H04R1/2857 , H04R1/342 , H04R1/406 , H04R19/016
Abstract: Presented herein is an audio endpoint for telecommunication operations, sometimes referred to herein as a “telecommunications audio endpoint” or, more, simply as an “audio endpoint.” According to at least one example, the audio endpoint presented herein includes a base, a speaker, a speaker waveguide, a microphone waveguide, and two or more microphones. The base is configured to engage a support surface (i.e., a table) and the speaker is configured to emit sounds (i.e., fire) in a direction of the base. The speaker waveguide is disposed between the speaker and the microphone waveguide, while the microphone waveguide is disposed between the speaker waveguide and the base. The two or more microphones are disposed within the microphone waveguide and are proximate to the base. In general, the speaker waveguide is configured to guide sounds output by the speaker in general radially (outward) directions.
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公开(公告)号：US20200219479A1
公开(公告)日：2020-07-09
申请号：US16242257
申请日：2019-01-08
Applicant: Cisco Technology, Inc.
Inventor： Feng Bao , David William Nolan Robison , Tor A. Sundsbarm
IPC: G10K11/178 , H04R1/10
Abstract: In one example, a headset obtains a first audio signal including a user audio signal from a first microphone on the headset and a second audio signal including the user audio signal from a second microphone on the headset. The headset derives a first candidate signal from the first audio signal and a second candidate signal from the second audio signal. Based on the first audio signal and the second audio signal, the headset determines that a mechanical touch noise is present in one of the first audio signal and the second audio signal. In response to determining that the mechanical touch noise is present in one of the first audio signal and the second audio signal, the headset selects an output audio signal from a plurality of candidate signals including the first candidate signal and the second candidate signal. Headset provides the output audio signal to a receiver device.
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公开(公告)号：US10051353B2
公开(公告)日：2018-08-14
申请号：US15454212
申请日：2017-03-09
Applicant: Cisco Technology, Inc.
Inventor： David William Nolan Robison , Kevin Lee Hughes , Feng Bao , Stephen Lee Ijams , Victor Manuel Sanchez , David M. Sanguinet
CPC classification number: H04R1/2857 , H04R1/342 , H04R1/406 , H04R19/016
Abstract: Presented herein is an audio endpoint for telecommunication operations, sometimes referred to herein as a “telecommunications audio endpoint” or, more, simply as an “audio endpoint.” According to at least one example, the audio endpoint presented herein includes a base, a speaker, a speaker waveguide, a microphone waveguide, and two or more microphones. The base is configured to engage a support surface (i.e., a table) and the speaker is configured to emit sounds (i.e., fire) in a direction of the base. The speaker waveguide is disposed between the speaker and the microphone waveguide, while the microphone waveguide is disposed between the speaker waveguide and the base. The two or more microphones are disposed within the microphone waveguide and are proximate to the base. In general, the speaker waveguide is configured to guide sounds output by the speaker in general radially (outward) directions.
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公开(公告)号：US10771887B2
公开(公告)日：2020-09-08
申请号：US16229693
申请日：2018-12-21
Applicant: Cisco Technology, Inc.
Inventor： Feng Bao , David William Nolan Robison , Jian Zou , Tor Sundsbarm
Abstract: In one example, a headset obtains, from a first microphone on the headset, a first audio signal including a user audio signal and an anisotropic background audio signal. The headset obtains, from a second microphone on the headset, a second audio signal including the user audio signal and the anisotropic background audio signal. The headset extracts, from the first audio signal and the second audio signal, using a first adaptive filter, a reference audio signal including the anisotropic background audio signal. Based on the reference signal, the headset cancels, using a second adaptive filter, the anisotropic background audio signal from a third audio signal derived from the first and second audio signals to produce an output audio signal. The headset provides the output audio signal to a receiver device.
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公开(公告)号：US10313786B1
公开(公告)日：2019-06-04
申请号：US16010774
申请日：2018-06-18
Applicant: Cisco Technology, Inc.
Inventor： Feng Bao , David William Nolan Robison , Tor A. Sundsbarm , Fei Yang
IPC: H04R3/00 , G10L21/0232 , H04R1/40
Abstract: A device including an array of bidirectional microphones optimizes the echo rejection of the bidirectional microphones. The microphone array receives audio from an audio source and generates audio signals from each of the bidirectional microphones. The device forms audio beams from combinations of the audio signals generated from the microphone array. Each audio beam captures audio from either its positive polarity zone or its negative polarity zone. The device determines a direction of the audio source and selects a perpendicular audio beam pair based on the direction of the audio source. The perpendicular audio beam pair includes a primary audio beam aimed toward the direction of the audio source and a secondary beam perpendicular to the primary audio beam. The device generates an output signal by combining the primary audio beam with the secondary audio beam based on polarity zone the audio is captured for each audio beam.
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