公开(公告)号：US20170133041A1

公开(公告)日：2017-05-11

申请号：US15321743

申请日：2015-07-07

Applicant: Analog Devices Global

Inventor： Mikael M. MORTENSEN ,  Kim Spetzler BERTHELSEN ,  Robert ADAMS ,  Cyrill A. MARTIN ,  Andrew MILIA ,  Eric G. NESTLER

IPC: G10L25/78 ,  G10L25/18 ,  G10L15/02 ,  G10L25/15

CPC classification number: G10L25/78 ,  G10L15/02 ,  G10L25/15 ,  G10L25/18 ,  G10L25/81 ,  G10L25/84

Abstract: Many processes for audio signal processing can benefit from voice activity detection, which aims to detect the presence of speech as opposed to silence or noise. The present disclosure describes, among other things, leveraging energy-based features of voice and insights on first and second formant frequencies of vowels to provide a low-complexity and low-power voice activity detector. A pair of two channels is provided whereby each channel is configured to detect voice activity in respective frequency bands of interest. Simultaneous activity detected in both channels can be a sufficient condition for determining that voice is present. More channels or pairs of channels can be used to detect different types of voices to improve detection and/or to detect voices present in different audio streams.

公开(公告)号：US09648432B2

公开(公告)日：2017-05-09

申请号：US14059153

申请日：2013-10-21

Applicant: Analog Devices Global

Inventor： Yang Pan ,  Fanjiong Zhang ,  Kim Spetzler Berthelsen ,  Michael W. Determan

IPC: H04R29/00 ,  H04R25/00 ,  H04R3/00 ,  H04R3/08

CPC classification number: H04R29/001 ,  H04R3/007 ,  H04R3/08

Abstract: A method of controlling sound reproduction may include applying an audio signal to a voice coil of the electrodynamic loudspeaker to produce sound, detecting one of an impedance and admittance of the loudspeaker across a predetermined audio frequency range based on a detected voice coil current and voice coil voltage and determining a fundamental resonance frequency of the loudspeaker based on the detected impedance or admittance. The fundamental resonance frequency of the loudspeaker may be compared with a nominal fundamental resonance frequency of the loudspeaker representing a nominal acoustic operating condition of the loudspeaker. A change of operating condition of the loudspeaker may be detected based on a frequency deviation between the determined fundamental resonance frequency and a nominal fundamental resonance frequency of the loudspeaker. The level of the audio signal may be attenuated in response to the frequency deviation meets a predetermined frequency error criterion.

公开(公告)号：US20170117602A1

公开(公告)日：2017-04-27

申请号：US14922037

申请日：2015-10-23

Applicant: Analog Devices Global

Inventor： Conor John McLoughlin ,  Michael John Flynn ,  Laurence B. O'Sullivan ,  Shane Geary ,  Stephen O'Brien ,  Bernard P. Stenson ,  Baoxing Chen ,  Sarah Carroll ,  Michael Morrissey ,  Patrick M. McGuinness

IPC: H01P1/36 ,  H01P11/00

CPC classification number: H01P1/36 ,  H01L2224/48137 ,  H01P5/187

Abstract: An isolator device and a corresponding method of forming the isolator device to include first and second electrodes, a layer of first dielectric material between the first and second electrodes, and at least one region of second dielectric material between the layer of first dielectric material and at least one of the first and second electrodes. The second dielectric material has a higher relative permittivity than the first dielectric material.

公开(公告)号：US20170102418A1

公开(公告)日：2017-04-13

申请号：US14881684

申请日：2015-10-13

Applicant: Analog Devices Global

Inventor： Sanjay Tumati ,  Ankur Ghosh

IPC: G01R27/26 ,  G05F1/56

CPC classification number: G01R27/2605 ,  G05F1/56

Abstract: Various embodiments efficiently detect the presence of an external capacitor electrically coupled to the output of a voltage regulator by perturbing the voltage output of the voltage regulator while the regulator is in operation and supplying, or ready to supply, regulated voltage to a load, and detecting the reaction of the regulator's output.

公开(公告)号：US09602055B1

公开(公告)日：2017-03-21

申请号：US15008183

申请日：2016-01-27

Applicant: Analog Devices Global

Inventor： Omar Fathy M. Haridy ,  Peter John Katzin ,  Ahmed Adel Hassona

IPC: H04B1/26 ,  H03D7/14 ,  H01L21/8234 ,  H01L23/66

CPC classification number: H03D7/1441 ,  H01L21/823475 ,  H01L23/66 ,  H01L2223/6605 ,  H01L2223/6688 ,  H03D7/1458 ,  H03D7/1466 ,  H03D2200/0023 ,  H03D2200/0074

Abstract: A single-ended mixer having a mismatched, high termination impedance is disclosed. The termination impedance can be mismatched by at least one order of magnitude higher than the standard impedance of a given design environment, such as a 50 Ohm environment for a radio frequency (RF) circuit. The termination impedance can be provided in close physical proximity to the mixer core of the single-ended mixer to allow a suitable bandwidth of operation.

公开(公告)号：US20170074656A1

公开(公告)日：2017-03-16

申请号：US14853265

申请日：2015-09-14

Applicant: Analog Devices Global

Inventor： Siddharth Tallur ,  Sunil Ashok Bhave

IPC: G01C19/5698 ,  G01C19/5677

CPC classification number: G01C19/5698 ,  G01C19/5677 ,  G01C19/5684

Abstract: A BAW gyroscope is configured to operate with two pairs of orthogonal modes instead of a single pair in order to mitigate the impact of changes in gaps (e.g., introduced from external stresses such as thermal gradients, external shocks, mechanical stress/torque, etc.). Specifically, the BAW gyroscope resonator is configured to be simultaneously driven to resonate with a two disparate resonant modes (referred to herein as the “fundamental” mode and the “compound” mode), with the same set of drive electrodes used to drive both resonant modes (i.e., all of the drive electrodes are used to drive the two drive modes). When the sensor experiences external rotation, energy couples from the driven modes of vibration to two corresponding orthogonal sense modes via the Coriolis force. The same set of sense electrodes is used to sense both sense modes (i.e., all of the sense electrodes are used to sense the two sense modes). The fundamental mode is differential with respect to the electrodes, while the compound mode is seen as common-mode with respect to the electrodes. Thus, differential gap change will impact offset of rate measured with the fundamental mode only, while common-mode gap change will impact offset of rate measured with the compound mode only.

Abstract translation: BAW陀螺仪被配置为以两对正交模式而不是单对操作，以便减轻间隙变化的影响（例如，从外部应力引起的热梯度，外部冲击，机械应力/扭矩等）。 ）。 具体地说，BAW陀螺仪谐振器被配置为同时驱动以与两个不同的谐振模式（本文中称为“基本”模式和“复合”模式）谐振），其中相同组的驱动电极用于驱动谐振 模式（即所有驱动电极都用于驱动两种驱动模式）。 当传感器经受外部旋转时，能量通过科里奥利力从激励的振动模式耦合到两个对应的正交感测模式。 相同的感测电极组用于感测两种感测模式（即，所有感测电极用于感测两种感测模式）。 基本模式相对于电极是差分的，而复合模式被看作是相对于电极的共模。 因此，差分间隙变化将仅影响基波模式测量速率的偏移，而共模间隙变化将仅影响利用复合模式测量的速率偏移。

公开(公告)号：US09584147B2

公开(公告)日：2017-02-28

申请号：US14831731

申请日：2015-08-20

Applicant: ANALOG DEVICES GLOBAL

Inventor： Adam Glibbery ,  John O'Dowd ,  Nicola O'Byrne

IPC: H03M1/12 ,  H03M5/12 ,  H03M1/18 ,  H03M3/00

CPC classification number: H03M1/123 ,  H03M1/0604 ,  H03M1/12 ,  H03M1/188 ,  H03M1/48 ,  H03M3/398 ,  H03M5/12

Abstract: In an isolation system, different analog to digital converters (“ADCs”) are provided on a first side of an isolation barrier. Outputs from the ADCs may be merged into a common data stream and communicated across the isolation barrier by a single isolation device. The ADCs may sample independent signals or may sample a common signal. When the ADCs sample a common signal, the system may monitor the input signal for fault conditions. During no fault operation, results of an analog-to-digital conversion may be communicated across an isolation barrier by an isolation device. During a fault condition, data representing the fault condition may replace the ADC data in communication across the isolation barrier. Fault conditions may be signaled by unique data patterns that can be distinguished from ADC data.

Abstract translation: 在隔离系统中，在隔离屏障的第一侧上提供不同的模数转换器（“ADC”）。 来自ADC的输出可以被合并到公共数据流中，并通过单个隔离装置在隔离屏障上传送。 ADC可以对独立信号进行采样，或者采样公共信号。 当ADC采样公共信号时，系统可以监视输入信号的故障状况。 在没有故障操作期间，模数转换的结果可以通过隔离装置在隔离屏障上传送。 在故障状态期间，表示故障状态的数据可以替代隔离隔离层的通信中的ADC数据。 故障条件可以通过可与ADC数据进行区分的唯一数据模式来发出信号。

公开(公告)号：US20170040959A1

公开(公告)日：2017-02-09

申请号：US14818126

申请日：2015-08-04

Applicant: Analog Devices Global

Inventor： Gerard Mora-Puchalt

IPC: H03F3/217 ,  H03F1/02 ,  H03M1/12

CPC classification number: H03F3/2175 ,  H03F1/0205 ,  H03F1/303 ,  H03F3/2171 ,  H03F3/303 ,  H03F3/45179 ,  H03F3/45219 ,  H03F3/45748 ,  H03F3/45775 ,  H03F2200/231 ,  H03F2200/297 ,  H03F2203/45112 ,  H03F2203/45116 ,  H03F2203/45292 ,  H03F2203/45454 ,  H03M1/12

Abstract: An output stage of a buffer or an amplifier connected to a switched capacitive load can operate in two phases to perform precharging and fine settling. The precharging and fine settling phases can be synchronized to the switching phases of the switched capacitive load connected to the amplifier. During the precharging phase, the output stage can be disconnected from the prior stages of the amplifier, and the output node of the amplifier can be connected to the switched capacitive load to precharge the capacitive load with the voltage already stored in the output stage. During the fine settling phase, the output stage can be reconnected to the prior stages of the amplifier, and the amplifier nodes can settle and get ready for sampling, which can occur at the end of the fine settling phase.

Abstract translation: 连接到开关电容性负载的缓冲器或放大器的输出级可以分两个阶段进行，以执行预充电和精细的稳定。 预充电和精细建立阶段可以与连接到放大器的开关电容负载的开关相位同步。 在预充电阶段，输出级可以与放大器的前级断开，并且放大器的输出节点可以连接到开关容性负载，以便已经存储在输出级中的电压对电容性负载进行预充电。 在精细建立阶段期间，输出级可以重新连接到放大器的前级，并且放大器节点可以稳定并准备好进行采样，这可以在微调阶段结束时发生。

公开(公告)号：US09548722B2

公开(公告)日：2017-01-17

申请号：US14719241

申请日：2015-05-21

Applicant: Analog Devices Global

Inventor： Yusuf Alperen Atesal ,  Peter J. Katzin

IPC: H03H11/24 ,  H03H7/25

CPC classification number: H03H11/245 ,  H03H7/25

Abstract: Apparatus and methods for reducing glitches in digital step attenuators are disclosed. By configuring a multi-bit DSA such that an attenuation control block changes a plurality of control signals in a manner sequencing individual switches of the DSA, glitches can be reduced and RF signal behavior can be enhanced. The sequence, based upon a unit time delay, causes the transient attenuation value to be bounded between a minimum and maximum and can improve settling time.

Abstract translation: 公开了用于减少数字步进衰减器中的毛刺的装置和方法。 通过配置多比特DSA，使得衰减控制块以对DSA的各个交换机进行排序的方式改变多个控制信号，可以减少毛刺并且可以提高RF信号行为。 该序列基于单位时间延迟，导致瞬态衰减值在最小和最大值之间的界限，并可以提高建立时间。

公开(公告)号：US20170012631A1

公开(公告)日：2017-01-12

申请号：US14794661

申请日：2015-07-08

Applicant: Analog Devices Global

Inventor： Pablo Cruz Dato ,  Declan D. Dalton ,  Patrick G. Crowley

IPC: H03L7/099 ,  H03L7/081

Abstract: A phase-locked loop (PLL) comprising a multi-band oscillator and a memory configured to store control input for the oscillator. The PLL is operable in a calibration mode in which the PLL is configured to acquire a frequency controlled word (FCW) for the PLL corresponding to a frequency generated by the oscillator in response to a first control input threshold on a first band of the oscillator; generate a frequency corresponding to said FCW on a second band of the oscillator adjacent to said first band; identify a second control input causing the oscillator to generate said frequency corresponding to said FCW and store said second control input in memory.

Abstract translation: 一种包括多频带振荡器的锁相环（PLL）和被配置为存储振荡器的控制输入的存储器。 PLL可在校准模式中操作，其中PLL被配置为响应于振荡器的第一频带上的第一控制输入阈值而获取对应于由振荡器产生的频率的PLL的频率受控字（FCW）; 在与所述第一频带相邻的所述振荡器的第二频带上产生对应于所述FCW的频率; 识别第二控制输入，使振荡器产生对应于所述FCW的所述频率，并将所述第二控制输入存储在存储器中。