公开(公告)号：US20180227659A1

公开(公告)日：2018-08-09

申请号：US15946194

申请日：2018-04-05

Applicant: Avnera Corporation

Inventor： Amit Kumar ,  Eric Sorensen ,  Shankar Rathoud

IPC: H04R1/10 ,  G10K11/178

CPC classification number: H04R1/1041 ,  G10K11/178 ,  G10K11/17855 ,  G10K2210/1081 ,  G10K2210/3021 ,  H04R1/1083 ,  H04R3/00 ,  H04R29/00 ,  H04R2410/05 ,  H04R2460/03

Abstract: A headphone detector including a headphone and a processor. The headphone has a microphone and a speaker, and the microphone is configured to generate an audio signal based on an output of the speaker. The processor is configured to receive the audio signal, determine a characteristic of the audio signal, and assess whether the headphone is on ear or off ear based on a comparison of the characteristic to a threshold. The threshold corresponds to one or more of an audio response of the audio signal at a corresponding frequency and an audio response of a feedback microphone signal at a corresponding frequency, under one or more known conditions.

公开(公告)号：US10021478B2

公开(公告)日：2018-07-10

申请号：US15442619

申请日：2017-02-24

Applicant: Avnera Corporation

Inventor： Michael Jon Wurtz ,  Eric Sorensen

IPC: H04R1/10 ,  A61F11/08 ,  H04R23/00 ,  G10K11/178

CPC classification number: H04R1/1083 ,  A61F11/08 ,  G10K11/178 ,  G10K11/17857 ,  G10K11/17881 ,  G10K2210/1081 ,  G10K2210/3026 ,  G10K2210/3027 ,  G10K2210/3028 ,  G10K2210/3219 ,  G10K2210/3226 ,  H04R1/1016 ,  H04R23/006 ,  H04R2201/003 ,  H04R2410/05 ,  H04R2460/01

Abstract: Automatic noise-reduction (ANR) headsets include circuitry that cancels or suppress undesired noises. Recent years have seen the emergence of in-the-ear (ITE) earphones that incorporate ANR technology; however, designing them to function well usually entails many design tradeoffs, such as using larger ear nozzles that are uncomfortable to obtain desired noise reduction or that require added structures to hold the earphones to a user ear. To avoid these tradeoffs, the present inventors devised, among other things, an exemplary ITE ANR earphone that places its error measurement microphone in the ear nozzle that connects the driver front acoustic volume to a user ear canal. This placement allows use of a narrower more comfortable ear nozzle without compromising noise reduction and without requiring added holding structures. Moreover, the narrower ear nozzle also lowers the likelihood that the ANR circuitry will become unstable and produce undesirable noise.

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：US20180137851A1

公开(公告)日：2018-05-17

申请号：US15570273

申请日：2016-10-14

Applicant: Avnera Corporation

Inventor： Amit Kumar ,  Eric Sorensen

IPC: G10K11/178

CPC classification number: G10K11/178 ,  G10K2210/1081 ,  G10K2210/3014 ,  G10K2210/3026 ,  G10K2210/3027 ,  G10K2210/3028

Abstract: A system including an automatic noise canceling (ANC) headphone and a processor. The ANC headphone has a microphone configured to generate a microphone signal and at least two non-zero ANC gain levels. The processor is configured to receive the microphone signal, determine a characteristic of the microphone signal, identify a revised ANC level from the ANC gain levels based on a comparison of the characteristic to at least one threshold, and output a signal corresponding to the revised ANC level. Methods are also disclosed.

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.

公开(公告)号：US20170013345A1

公开(公告)日：2017-01-12

申请号：US14850859

申请日：2015-09-10

Applicant: Avnera Corporation

Inventor： Amit Kumar ,  Eric Sorensen ,  Shankar Rathoud

IPC: H04R1/10

CPC classification number: H04R1/1041 ,  G10K11/178 ,  G10K11/17855 ,  G10K2210/1081 ,  G10K2210/3021 ,  H04R1/1083 ,  H04R3/00 ,  H04R29/00 ,  H04R2410/05 ,  H04R2460/03

Abstract: A headphone detector including a headphone and a processor. The headphone has a microphone and a speaker, and the microphone is configured to generate an audio signal based on an output of the speaker. The processor is configured to receive the audio signal, determine a characteristic of the audio signal, and assess whether the headphone is on ear or off ear based on a comparison of the characteristic to a threshold. In another aspect, an off-ear detection (OED) system includes a headphone and an OED processor. The headphone has a speaker, a feedforward microphone, and a feedback microphone. The OED processor is configured to determine whether the headphone is off ear or on ear, based at least in part on a headphone audio signal, a feedforward microphone signal, and a feedback microphone signal.

Abstract translation: 一种耳机检测器，包括耳机和处理器。 耳机具有麦克风和扬声器，麦克风被配置为基于扬声器的输出产生音频信号。 处理器被配置为接收音频信号，确定音频信号的特性，并且基于特征与阈值的比较来评估耳机是耳朵还是耳朵。 在另一方面，一种耳朵检测（OED）系统包括耳机和OED处理器。 耳机具有扬声器，前馈麦克风和反馈麦克风。 OED处理器被配置为至少部分地基于耳机音频信号，前馈麦克风信号和反馈麦克风信号来确定耳机是否脱离耳朵或耳朵。