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公开(公告)号：US10652649B2
公开(公告)日：2020-05-12
申请号：US16427260
申请日：2019-05-30
Applicant: ESS Technology, Inc.
Inventor： A. Martin Mallinson , Robert Lynn Blair , Christian Leth Petersen , Paul Christopher Scowen
Abstract: An improved system and method for reducing the ambient noise experienced by a user listening to an earpiece without the use of a microphone is disclosed. An “ambient noise signal” created by the sound pressure wave of the ambient noise acting on the earpiece transducer is obtained. In some embodiments, the ambient noise signal is inverted and fed back, and the inverted signal is added to the intended audio signal being sent to the earpiece so that the ambient noise is cancelled. In other embodiments, a processor receives the ambient noise signal and predicts the modification to the intended audio signal needed to counteract the ambient noise. The ambient noise signal may be obtained by comparing the actual signal across the earpiece transducer to the intended audio signal, or by detecting variations in the current across the transducer from the current generated to drive the transducer.
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公开(公告)号：US20210330279A1
公开(公告)日：2021-10-28
申请号：US17241417
申请日：2021-04-27
Applicant: ESS Technology, Inc.
Inventor： Dustin Dale Forman , Christian Leth Petersen , A. Martin Mallinson
Abstract: An improved method and apparatus for detecting and measuring one or more biometric parameters of a user using a computing device in conjunction with an electroacoustic (audio) transducer is described. A first mode in which the audio transducer produces sound is disabled, and the device is placed in a second mode of operation in which a biometric signal is recovered from the transducer using a “back” audio signal. The biometric signal may then be measured or analyzed. The first mode is disabled by temporarily creating a high impedance between circuitry producing the audio signal and the transducer, while the biometric parameter is measured. This allows for detection of the biometric event without the need for significant additional components or circuitry. The computing device may most conveniently be a smartphone, but the approach described herein may also be easily and usefully applied to tablets, laptop or desktop computers or other devices.
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Patent Agency Ranking
公开(公告)号：US10433046B2
公开(公告)日：2019-10-01
申请号：US16130979
申请日：2018-09-13
Applicant: ESS Technology, Inc.
Inventor： A. Martin Mallinson , Robert Lynn Blair , Christian Leth Petersen , Paul Christopher Scowen
Abstract: An improved system and method for reducing the ambient noise experienced by a user listening to an earpiece without the use of a microphone is disclosed. An “ambient noise signal” created by the sound pressure wave of the ambient noise acting on the earpiece transducer is obtained. In some embodiments, the ambient noise signal is inverted and fed back, and the inverted signal is added to the intended audio signal being sent to the earpiece so that the ambient noise is cancelled. In other embodiments, a processor receives the ambient noise signal and predicts the modification to the intended audio signal needed to counteract the ambient noise. The ambient noise signal may be obtained by comparing the actual signal across the earpiece transducer to the intended audio signal, or by detecting variations in the current across the transducer from the current generated to drive the transducer.
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公开(公告)号：US11081097B2
公开(公告)日：2021-08-03
申请号：US16917085
申请日：2020-06-30
Applicant: ESS Technology, Inc.
Inventor： Christian Leth Petersen , Shawn William Scarlett , A. Martin Mallinson
IPC: G10K11/178 , H04R1/10
Abstract: A system and method for passively balancing electroacoustic transducers so that sounds other than the transducer's output can be detected. A transducer producing audio output based upon an input audio signal can operate in reverse to produce a signal in response to the impact of external sound upon the transducer from another source. This “reverse” or “microphone” signal represents the sound from the other source. Transducers are operated in monophonic mode, each in opposite polarity to the other thus canceling out and leaving only the microphone signal created by the transducers, i.e., a signal representing the external sound. The microphone signal can be amplified, and can be filtered and processed to identify and/or obtain various types of information about the sound received by the transducers.
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公开(公告)号：US20210005175A1
公开(公告)日：2021-01-07
申请号：US16917085
申请日：2020-06-30
Applicant: ESS Technology, Inc.
Inventor： Christian Leth Petersen , Shawn William Scarlett , A. Martin Mallinson
IPC: G10K11/178 , H04R1/10
Abstract: A system and method for passively balancing electroacoustic transducers so that sounds other than the transducer's output can be detected. A transducer producing audio output based upon an input audio signal can operate in reverse to produce a signal in response to the impact of external sound upon the transducer from another source. This “reverse” or “microphone” signal represents the sound from the other source. Transducers are operated in monophonic mode, each in opposite polarity to the other thus canceling out and leaving only the microphone signal created by the transducers, i.e., a signal representing the external sound. The microphone signal can be amplified, and can be filtered and processed to identify and/or obtain various types of information about the sound received by the transducers.
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公开(公告)号：US20200068290A1
公开(公告)日：2020-02-27
申请号：US16672473
申请日：2019-11-03
Applicant: ESS Technology, Inc.
Inventor： A. Martin Mallinson , Robert Lynn Blair , Christian Leth Petersen , Paul Christopher Scowen
Abstract: An improved system and method for recognizing an audio signal due to physical activity and taking a predetermined action in response is disclosed. A “reverse noise signal” created by the sound pressure wave of the physical activity acting on the earpiece transducer is obtained. In some embodiments, an ambient noise signal is inverted and fed back, and the inverted signal is added to the intended audio signal being sent to the earpiece so that the ambient noise is cancelled. In other embodiments, a processor receives the ambient noise signal and predicts the modification to the intended audio signal needed to counteract the ambient noise. In other embodiments, the reverse noise signal may represent a motor or biological activity of a user; the system may take different actions in response to different physical activities, such as a heart beat of the user, or a tap, footfall, or swallowing by the user.
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公开(公告)号：US10798479B2
公开(公告)日：2020-10-06
申请号：US16672473
申请日：2019-11-03
Applicant: ESS Technology, Inc.
Inventor： A. Martin Mallinson , Robert Lynn Blair , Christian Leth Petersen , Paul Christopher Scowen
Abstract: An improved system and method for recognizing an audio signal due to physical activity and taking a predetermined action in response is disclosed. A “reverse noise signal” created by the sound pressure wave of the physical activity acting on the earpiece transducer is obtained. In some embodiments, an ambient noise signal is inverted and fed back, and the inverted signal is added to the intended audio signal being sent to the earpiece so that the ambient noise is cancelled. In other embodiments, a processor receives the ambient noise signal and predicts the modification to the intended audio signal needed to counteract the ambient noise. In other embodiments, the reverse noise signal may represent a motor or biological activity of a user; the system may take different actions in response to different physical activities, such as a heart beat of the user, or a tap, footfall, or swallowing by the user.
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