公开(公告)号：US09602920B2

公开(公告)日：2017-03-21

申请号：US14600026

申请日：2015-01-20

Applicant: DSP Group LTD.

Inventor： Moshe Haiut

IPC: H03F99/00 ,  H04R3/00 ,  H04R1/04

CPC classification number: H04R3/00 ,  H04R1/04 ,  H04R2201/003

Abstract: A scheme is described to switch the power supply to the MEMS microphone on and off in a cyclic manner that is synchronized with the associated ADC sampling rate. In this way the MEMS microphone amplifier, whether it is a J-FET transistor or an operational amplifier, is off most of the cycle time, and is turned on only for a few micro-seconds prior to the sample-and-hold timing of the ADC device. By this method, the average power consumption of an existing analog MEMS microphone can be reduced by a factor of 10 or more.

公开(公告)号：US20150215698A1

公开(公告)日：2015-07-30

申请号：US14600026

申请日：2015-01-20

Applicant: DSP Group LTD.

Inventor： Moshe Haiut

IPC: H04R3/00

CPC classification number: H04R3/00 ,  H04R1/04 ,  H04R2201/003

Abstract: A scheme is described to switch the power supply to the MEMS microphone on and off in a cyclic manner that is synchronized with the associated ADC sampling rate. In this way the MEMS microphone amplifier, whether it is a J-FET transistor or an operational amplifier, is off most of the cycle time, and is turned on only for a few micro-seconds prior to the sample-and-hold timing of the ADC device. By this method, the average power consumption of an existing analog MEMS microphone can be reduced by a factor of 10 or more.

Abstract translation: 描述了以与关联的ADC采样率同步的循环方式将MEMS麦克风的电源切换到MEMS麦克风的方案。 以这种方式，无论是J-FET晶体管还是运算放大器，MEMS麦克风放大器在大部分周期时间内都处于关闭状态，并且在采样保持定时之前仅打开几微秒， ADC器件。 通过这种方法，现有的模拟MEMS麦克风的平均功耗可以降低10倍或更多。

公开(公告)号：US20140363033A1

公开(公告)日：2014-12-11

申请号：US14143282

申请日：2013-12-30

Applicant: DSP Group

Inventor： Arie Heiman ,  Moshe Haiut ,  Uri Yehuday

IPC: H04R1/46

CPC classification number: H04R1/46 ,  H04R3/02 ,  H04R25/407 ,  H04R25/45 ,  H04R25/453 ,  H04R25/505 ,  H04R25/606 ,  H04R2460/03 ,  H04R2460/13

Abstract: Methods and systems are provided for controlling bone conduction, in which a bone conduction element may be used to output acoustic signals when it is in contact with a user. A bone conduction sensor may also be made in contact with the user, and used to obtain feedback relating to the outputting of the acoustic signals via the bone conduction element. The outputting of the acoustic signals may then be adaptively controlled based on processing of the feedback. The adaptive controlling may comprise adjusting components and/or functions related to or used in the outputting of the acoustic signals. For example, the adaptive controlling may comprise adjusting gain, frequency response, and/or equalization associated with a drive amplifier driving the bone conduction element.

Abstract translation: 提供了用于控制骨传导的方法和系统，其中当与用户接触时，可以使用骨传导元件来输出声信号。 也可以将骨传导传感器与使用者接触，并且用于获得与通过骨传导元件输出声信号有关的反馈。 然后可以基于反馈的处理自适应地控制声信号的输出。 自适应控制可以包括调整与声信号的输出相关或用于输出声信号的组件和/或功能。 例如，自适应控制可以包括调整与驱动骨传导元件的驱动放大器相关联的增益，频率响应和/或均衡。

公开(公告)号：US20140337036A1

公开(公告)日：2014-11-13

申请号：US14272544

申请日：2014-05-08

Applicant: DSP Group LTD.

Inventor： Moshe Haiut ,  Arie Heiman ,  Uri Yehuday

IPC: G10L15/20 ,  G06F1/32 ,  G06F3/16

CPC classification number: G10L15/20 ,  G06F1/3265 ,  G06F3/167 ,  G10L15/28 ,  G10L25/78

Abstract: In a mobile device, a bone conduction or vibration sensor is used to detect the user's speech and the resulting output is used as the source for a low power Voice Trigger (VT) circuit that can activate the Automatic Speech Recognition (ASR) of the host device. This invention is applicable to mobile devices such as wearable computers with head mounted displays, mobile phones and wireless headsets and headphones which use speech recognition for the entering of input commands and control. The speech sensor can be a bone conduction microphone used to detect sound vibrations in the skull, or a vibration sensor, used to detect sound pressure vibrations from the user's speech. This VT circuit can be independent of any audio components of the host device and can therefore be designed to consume ultra-low power. Hence, this VT circuit can be active when the host device is in a sleeping state and can be used to wake the host device on detection of speech from the user. This VT circuit will be resistant to outside noise and react solely to the user's voice.

Abstract translation: 在移动设备中，使用骨传导或振动传感器来检测用户的语音，并将所得到的输出用作可以激活主机的自动语音识别（ASR）的低功率语音触发（VT）电路的源 设备。 本发明可应用于诸如具有头戴式显示器的可穿戴计算机，移动电话和无线耳机以及使用语音识别来输入输入命令和控制的耳机的移动设备。 语音传感器可以是用于检测颅骨中的声音振动的骨传导麦克风或用于检测来自用户的语音的声压振动的振动传感器。 该VT电路可以独立于主机设备的任何音频组件，因此可以被设计为消耗超低功耗。 因此，当主机处于睡眠状态时，该VT电路可以是活动的，并且可以用于在从用户检测到语音时唤醒主机设备。 该VT电路将抵抗外部噪声，并仅对用户的声音作出反应。

公开(公告)号：US11238887B2

公开(公告)日：2022-02-01

申请号：US16021147

申请日：2018-06-28

Applicant: DSP Group Ltd.

Inventor： Moshe Haiut

IPC: G06N3/04 ,  G10L25/24 ,  H03K7/00 ,  G10L25/30 ,  G06N3/063

Abstract: A processor, that may include at least one neural network that comprises at least one leaky spiking neuron; wherein the at least one leaky spiking neuron is configured to directly receive an input pulse density modulation (PDM) signal from a sensor; wherein the input PDM signal represents a detected signal that was detected by the sensor; and wherein the at least one neural network is configured to process the input PDM signal to provide an indication about the detected input signal.

公开(公告)号：US11163531B2

公开(公告)日：2021-11-02

申请号：US16447966

申请日：2019-06-21

Applicant: DSP GROUP LTD.

Inventor： Moshe Haiut ,  Assaf Ganor

IPC: G06F7/544 ,  G06F7/498

Abstract: A method and a MAC unit that may include accumulation unit and a multiplier. A accumulation unit that includes a first part, a second part and a third part. The first part may calculate a truncated sum. The second part may be configured to (a) receive, during each calculation cycle, a carry out of an add operation performed during a calculation cycle, (b) receive a sign bit of an intermediate product calculated during the calculation cycle; and (c) calculate, by the counter logic, a counter logic value, and (d) convert, after a start of a last calculation cycle of the calculation cycles, an output value of the counter logic to an intermediate value having a two's complement format. The third part may be configured to calculate an output value of the MAC unit based on the intermediate value and a truncated sum calculated by the first part of the accumulation unit.

公开(公告)号：US11087205B2

公开(公告)日：2021-08-10

申请号：US15877459

申请日：2018-01-23

Applicant: DSP Group Ltd.

Inventor： Moshe Haiut

IPC: G06N3/04 ,  G06N3/08 ,  G06F17/11 ,  G06F7/58 ,  G06N3/063 ,  G06F30/20 ,  G06F111/10 ,  G06F119/12

Abstract: A neural network that may include multiple layers of neural cells; wherein a certain neural cell of a certain layer of neural cells may include a first plurality of one-bit inputs; an adder and leaky integrator unit; and an activation function circuit that has a one-bit output; wherein the first plurality of one-bit inputs are coupled to a first plurality of one-bit outputs of neural cells of a layer that precedes the certain layer; wherein the adder and leaky integration unit is configured to calculate a leaky integral of a weighted sum of a number of one-bit pulses that were received, during a time window, by the first plurality of one-bit inputs; and wherein the activation function circuit is configured to apply an activation function on the leaky integral to provide a one-bit output of the certain neural cell.

公开(公告)号：US20180225564A1

公开(公告)日：2018-08-09

申请号：US15877459

申请日：2018-01-23

Applicant: DSP Group Ltd.

Inventor： Moshe Haiut

IPC: G06N3/04 ,  G06N3/08 ,  G06F17/50 ,  G06F7/58 ,  G06F17/11

CPC classification number: G06N3/049 ,  G06F7/58 ,  G06F17/11 ,  G06F17/5009 ,  G06F2207/4824 ,  G06F2217/16 ,  G06F2217/84 ,  G06N3/0445 ,  G06N3/0481 ,  G06N3/063 ,  G06N3/08

Abstract: A neural network that may include multiple layers of neural cells; wherein a certain neural cell of a certain layer of neural cells may include a first plurality of one-bit inputs; an adder and leaky integrator unit; and an activation function circuit that has a one-bit output; wherein the first plurality of one-bit inputs are coupled to a first plurality of one-bit outputs of neural cells of a layer that precedes the certain layer; wherein the adder and leaky integration unit is configured to calculate a leaky integral of a weighted sum of a number of one-bit pulses that were received, during a time window, by the first plurality of one-bit inputs; and wherein the activation function circuit is configured to apply an activation function on the leaky integral to provide a one-bit output of the certain neural cell.

公开(公告)号：US09596534B2

公开(公告)日：2017-03-14

申请号：US14143282

申请日：2013-12-30

Applicant: DSP Group

Inventor： Arie Heiman ,  Moshe Haiut ,  Uri Yehuday

IPC: H04R1/46 ,  H04R25/00 ,  H04R3/02

CPC classification number: H04R1/46 ,  H04R3/02 ,  H04R25/407 ,  H04R25/45 ,  H04R25/453 ,  H04R25/505 ,  H04R25/606 ,  H04R2460/03 ,  H04R2460/13

Abstract: Methods and systems are provided for controlling bone conduction, in which a bone conduction element may be used to output acoustic signals when it is in contact with a user. A bone conduction sensor may also be made in contact with the user, and used to obtain feedback relating to the outputting of the acoustic signals via the bone conduction element. The outputting of the acoustic signals may then be adaptively controlled based on processing of the feedback. The adaptive controlling may comprise adjusting components and/or functions related to or used in the outputting of the acoustic signals. For example, the adaptive controlling may comprise adjusting gain, frequency response, and/or equalization associated with a drive amplifier driving the bone conduction element.

Abstract translation: 提供了用于控制骨传导的方法和系统，其中当与用户接触时，可以使用骨传导元件来输出声信号。 也可以将骨传导传感器与使用者接触，并且用于获得与通过骨传导元件输出声信号有关的反馈。 然后可以基于反馈的处理自适应地控制声信号的输出。 自适应控制可以包括调整与声信号的输出相关或用于输出声信号的组件和/或功能。 例如，自适应控制可以包括调整与驱动骨传导元件的驱动放大器相关联的增益，频率响应和/或均衡。

公开(公告)号：US20140365225A1

公开(公告)日：2014-12-11

申请号：US14155045

申请日：2014-01-14

Applicant: DSP Group

Inventor： Moshe Haiut

IPC: G10L15/22

CPC classification number: G10L15/22 ,  G10L25/72 ,  G10L2015/223

Abstract: Methods and systems are provided for ultra-low-power adaptive, user independent, voice triggering in electronic devices. A voice trigger, which may be configured as ultra-low-power function, may be run in an electronic device, when the electronic device transitions to a power-saving state, and may be used to control the electronic device based on audio inputs. The controlling may comprise capturing an audio input, and processing the audio input to determine when the audio input corresponds to a triggering command, to trigger transitioning of the electronic device from the power-saving state. The processing of audio input, to determine that it corresponds to the triggering command, may be based on use of an adaptively configured state machine. The state machine may be based on a Hidden Markov Model (HMM), and may be configured as a two-dimensional state machine that comprises plurality of lines of incantations, each of which corresponding to the triggering command.

Abstract translation: 提供了用于电子设备中超低功耗自适应，用户独立，语音触发的方法和系统。 当电子设备转换到省电状态时，可以配置为超低功率功能的语音触发器可以在电子设备中运行，并且可以用于基于音频输入来控制电子设备。 控制可以包括捕获音频输入，并且处理音频输入以确定音频输入何时对应于触发命令，以触发电子设备从省电状态的转换。 音频输入的处理，以确定其对应于触发命令，可以基于使用自适应配置的状态机。 状态机可以基于隐马尔可夫模型（HMM），并且可以被配置为包括多个咒语行的二维状态机，其中每一个对应于触发命令。