公开(公告)号：US10448140B2

公开(公告)日：2019-10-15

申请号：US16174067

申请日：2018-10-29

Applicant: Avnera Corporation

Inventor： Amit Kumar ,  Shankar Rathoud ,  Mike Wurtz ,  Eric Etheridge ,  Eric Sorensen

IPC: H04R1/10 ,  H04R3/00 ,  H04R29/00 ,  G10K11/178

Abstract: Disclosed is a signal processor for headphone off-ear detection. The signal processor includes an audio output to transmit an audio signal toward a headphone speaker in a headphone cup. The signal processor also includes a feedback (FB) microphone input to receive a FB signal from a FB microphone in the headphone cup. The signal processor also includes an off-ear detection (OED) signal processor to determine an audio frequency response of the FB signal over an OED frame as a received frequency response. The OED processor also determines an audio frequency response of the audio signal times an off-ear transfer function between the headphone speaker and the FB microphone as an ideal off-ear response. A difference metric si generated comparing the received frequency response to the ideal off-ear frequency response. The difference metric is employed to detect when the headphone cup is disengaged from an ear.

公开(公告)号：US20180270564A1

公开(公告)日：2018-09-20

申请号：US15984068

申请日：2018-05-18

Applicant: Avnera Corporation

Inventor： Amit Kumar ,  Shankar Rathoud ,  Mike Wurtz ,  Eric Etheridge ,  Eric Sorensen

IPC: H04R1/10 ,  H04R3/00 ,  H04R29/00 ,  G10K11/178

CPC classification number: H04R1/1041 ,  G10K11/178 ,  G10K2210/1081 ,  G10K2210/3026 ,  G10K2210/3027 ,  H04R1/1008 ,  H04R3/00 ,  H04R29/001 ,  H04R2460/01

Abstract: Disclosed is a signal processor for headphone off-ear detection. The signal processor includes an audio output to transmit an audio signal toward a headphone speaker in a headphone cup. The signal processor also includes a feedback (FB) microphone input to receive a FB signal from a FB microphone in the headphone cup. The signal processor also includes an off-ear detection (OED) signal processor to determine an audio frequency response of the FB signal over an OED frame as a received frequency response. The OED processor also determines an audio frequency response of the audio signal times an off-ear transfer function between the headphone speaker and the FB microphone as an ideal off-ear response. A difference metric si generated comparing the received frequency response to the ideal off-ear frequency response. The difference metric is employed to detect when the headphone cup is disengaged from an ear.

公开(公告)号：US11006201B2

公开(公告)日：2021-05-11

申请号：US16588108

申请日：2019-09-30

Applicant: Avnera Corporation

Inventor： Amit Kumar ,  Shankar Rathoud ,  Michael Jon Wurtz ,  Eric Etheridge ,  Eric Sorensen

IPC: H04R1/10 ,  H04R29/00 ,  G10K11/178 ,  H04R3/00

Abstract: Disclosed is a signal processor for headphone off-ear detection. The signal processor includes an audio output to transmit an audio signal toward a headphone speaker in a headphone cup. The signal processor also includes a feedback (FB) microphone input to receive a FB signal from a FB microphone in the headphone cup. The signal processor also includes an off-ear detection (OED) signal processor to determine an audio frequency response of the FB signal over an OED frame as a received frequency response. The OED processor also determines an audio frequency response of the audio signal times an off-ear transfer function between the headphone speaker and the FB microphone as an ideal off-ear response. A difference metric si generated comparing the received frequency response to the ideal off-ear frequency response. The difference metric is employed to detect when the headphone cup is disengaged from an ear.

公开(公告)号：US10200776B2

公开(公告)日：2019-02-05

申请号：US15984068

申请日：2018-05-18

Applicant: Avnera Corporation

Inventor： Amit Kumar ,  Shankar Rathoud ,  Mike Wurtz ,  Eric Etheridge ,  Eric Sorensen

IPC: H04R1/10 ,  G10K11/178 ,  H04R3/00 ,  H04R29/00

Abstract: Disclosed is a signal processor for headphone off-ear detection. The signal processor includes an audio output to transmit an audio signal toward a headphone speaker in a headphone cup. The signal processor also includes a feedback (FB) microphone input to receive a FB signal from a FB microphone in the headphone cup. The signal processor also includes an off-ear detection (OED) signal processor to determine an audio frequency response of the FB signal over an OED frame as a received frequency response. The OED processor also determines an audio frequency response of the audio signal times an off-ear transfer function between the headphone speaker and the FB microphone as an ideal off-ear response. A difference metric si generated comparing the received frequency response to the ideal off-ear frequency response. The difference metric is employed to detect when the headphone cup is disengaged from an ear.

公开(公告)号：US20190174218A1

公开(公告)日：2019-06-06

申请号：US16174067

申请日：2018-10-29

Applicant: Avnera Corporation

Inventor： Amit Kumar ,  Shankar Rathoud ,  Mike Wurtz ,  Eric Etheridge ,  Eric Sorensen

IPC: H04R1/10 ,  H04R3/00 ,  H04R29/00 ,  G10K11/178

CPC classification number: H04R1/1041 ,  G10K11/178 ,  G10K2210/1081 ,  G10K2210/3026 ,  G10K2210/3027 ,  H04R1/1008 ,  H04R3/00 ,  H04R29/001 ,  H04R2460/01

Abstract: Disclosed is a signal processor for headphone off-ear detection. The signal processor includes an audio output to transmit an audio signal toward a headphone speaker in a headphone cup. The signal processor also includes a feedback (FB) microphone input to receive a FB signal from a FB microphone in the headphone cup. The signal processor also includes an off-ear detection (OED) signal processor to determine an audio frequency response of the FB signal over an OED frame as a received frequency response. The OED processor also determines an audio frequency response of the audio signal times an off-ear transfer function between the headphone speaker and the FB microphone as an ideal off-ear response. A difference metric si generated comparing the received frequency response to the ideal off-ear frequency response. The difference metric is employed to detect when the headphone cup is disengaged from an ear.

公开(公告)号：US09980034B2

公开(公告)日：2018-05-22

申请号：US15792394

申请日：2017-10-24

Applicant: Avnera Corporation

Inventor： Amit Kumar ,  Shankar Rathoud ,  Mike Wurtz ,  Eric Etheridge ,  Eric Sorensen

IPC: H04R1/10 ,  H04R29/00 ,  G10K11/178

CPC classification number: H04R1/1041 ,  G10K11/178 ,  G10K2210/1081 ,  G10K2210/3026 ,  G10K2210/3027 ,  H04R1/1008 ,  H04R29/001 ,  H04R2460/01

Abstract: Disclosed is a signal processor for headphone off-ear detection. The signal processor includes an audio output to transmit an audio signal toward a headphone speaker in a headphone cup. The signal processor also includes a feedback (FB) microphone input to receive a FB signal from a FB microphone in the headphone cup. The signal processor also includes an off-ear detection (OED) signal processor to determine an audio frequency response of the FB signal over an OED frame as a received frequency response. The OED processor also determines an audio frequency response of the audio signal times an off-ear transfer function between the headphone speaker and the FB microphone as an ideal off-ear response. A difference metric si generated comparing the received frequency response to the ideal off-ear frequency response. The difference metric is employed to detect when the headphone cup is disengaged from an ear.

公开(公告)号：US20180115815A1

公开(公告)日：2018-04-26

申请号：US15792394

申请日：2017-10-24

Applicant: Avnera Corporation

Inventor： Amit Kumar ,  Shankar Rathoud ,  Mike Wurtz ,  Eric Etheridge ,  Eric Sorensen

IPC: H04R1/10 ,  H04R29/00

CPC classification number: H04R1/1041 ,  G10K11/178 ,  G10K2210/1081 ,  G10K2210/3026 ,  G10K2210/3027 ,  H04R1/1008 ,  H04R29/001 ,  H04R2460/01

Abstract: Disclosed is a signal processor for headphone off-ear detection. The signal processor includes an audio output to transmit an audio signal toward a headphone speaker in a headphone cup. The signal processor also includes a feedback (FB) microphone input to receive a FB signal from a FB microphone in the headphone cup. The signal processor also includes an off-ear detection (OED) signal processor to determine an audio frequency response of the FB signal over an OED frame as a received frequency response. The OED processor also determines an audio frequency response of the audio signal times an off-ear transfer function between the headphone speaker and the FB microphone as an ideal off-ear response. A difference metric si generated comparing the received frequency response to the ideal off-ear frequency response. The difference metric is employed to detect when the headphone cup is disengaged from an ear.