公开(公告)号：WO2017158586A1

公开(公告)日：2017-09-21

申请号：PCT/IL2017/050258

申请日：2017-03-01

Applicant: VOCALZOOM SYSTEMS LTD.

Inventor： BAKISH, Tal

IPC: H04R23/00 ,  G01H9/00 ,  G10L15/20

Abstract: Laser-based system and optical microphone having increased bandwidth. The system includes a laser microphone to transmit a laser beam towards a human speaker; to receive an optical feedback signal reflected back from the human speaker; and to perform self-mixing interferometry. An optical feedback signal bandwidth enhancer improves the bandwidth of the optical feedback signal, to improve the quality of remote speech detection that is based on the optical feedback signal. The bandwidth enhancement utilizes takes into account one or more of: the identity of the face-region hit by the laser beam; the skin color or shade; obstruction of the skin by hair or by accessories; ability to allocate increased processing resources for processing of the optical feedback signal; ability to modify modulation frequency of the optical feedback signal; Signal to Noise Ratio (SNR) estimation; bandwidth estimation; acoustic-optical transmission channel estimation; or other suitable parameters.

Abstract translation: 基于激光的系统和带宽增加的光学麦克风。 该系统包括激光麦克风，以向人类扬声器发射激光束; 接收从人类说话人反射回来的光学反馈信号; 并执行自混合干涉测量。 光反馈信号带宽增强器改善了光反馈信号的带宽，提高了基于光反馈信号的远端语音检测的质量。 带宽增强利用考虑以下一项或多项：激光束击中的脸部区域的身份; 肤色或阴影; 头发或附件阻塞皮肤; 为处理光反馈信号分配增加的处理资源的能力; 修改光学反馈信号的调制频率的能力; 信噪比（SNR）估计; 带宽估计; 声光传输信道估计; 或其他合适的参数。

公开(公告)号：WO2019058366A1

公开(公告)日：2019-03-28

申请号：PCT/IL2018/051041

申请日：2018-09-17

Applicant: VOCALZOOM SYSTEMS LTD.

Inventor： FISHMAN, Tal ,  BAKISH, Tal

IPC: G01S7/491 ,  G01S5/18

Abstract: A device has a laser unit, which includes: a top-side p-type DBR region; which is on top of and in direct touch with an active region; which is on top of and in direct touch with a bottom-side n-type Distributed Bragg Reflector (DBR) region; which is on top of a n-type substrate. The laser unit further includes a voltage measurement anode touching or being in proximity to a top surface of the active region; and a voltage measurement cathode touching or being in proximity to a bottom surface of the active region. The voltage between the voltage measurement anode and the voltage measurement cathode is directly measured; and is utilized for determining characteristics of a laser self-mix signal of the laser unit, without having or using a monitor photo-diode.

公开(公告)号：WO2017017593A1

公开(公告)日：2017-02-02

申请号：PCT/IB2016/054417

申请日：2016-07-25

Applicant: VOCALZOOM SYSTEMS LTD.

Inventor： BAKISH, Tal

IPC: G10L15/25 ,  G10L15/20 ,  H04R23/00

CPC classification number: H04R23/008 ,  H04R3/005 ,  H04R17/02 ,  H04R19/04 ,  H04R23/02 ,  H04R2410/05 ,  H04R2499/11 ,  H04R2499/13 ,  H04R2499/15

Abstract: A system includes a laser microphone or laser-based microphone or optical microphone. The laser microphone includes a laser transmitter to transmit an outgoing laser beam towards a human speaker. The laser transmitter acts also as a self-mix interferometry unit that receives the optical feedback signal reflected from the human speaker, and generates an optical self-mix signal by self-mixing interferometry of the laser beam and the received optical feedback signal. Instead of utilizing a single laser beam, multiple laser beams are used, by operating an array of laser transmitters, or by utilizing a laser beam splitter or a crystal to split laser beams or to diffract or scatter laser beams. Optionally, one or more laser beams may temporally scan a target area.

Abstract translation: 系统包括激光麦克风或基于激光的麦克风或光学麦克风。 激光麦克风包括激光发射器，用于向人类扬声器传送输出的激光束。 激光发射器还用作接收从人类扬声器反射的光反馈信号的自混合干涉测量单元，并且通过激光束的自混合干涉测量和所接收的光学反馈信号产生光学自混合信号。 代替使用单个激光束，通过操作激光发射器的阵列，或者通过利用激光分束器或晶体来分割激光束或衍射或散射激光束来使用多个激光束。 可选地，一个或多个激光束可以暂时扫描目标区域。

公开(公告)号：WO2013140399A1

公开(公告)日：2013-09-26

申请号：PCT/IL2013/050252

申请日：2013-03-18

Applicant: VOCALZOOM SYSTEMS LTD

Inventor： AVARGEL, Yekutiel ,  BAKISH, Tal

IPC: G10L21/00 ,  G10L21/02 ,  G10L15/28

CPC classification number: G10L25/90 ,  G10L25/78 ,  G10L2025/906

Abstract: Method and system for tracking fundamental frequencies of pseudo-periodic signals in the presence of noise that include receiving a time-frequency representation of signals measured in a predefined environment; estimating and tracking a fundamental frequency of a respective pseudo-periodic signal at each time frame of the time-frequency representation by tracking detections of harmonious frequencies in the time-frequency representation over time; and outputting each respective estimated fundamental frequency associated with the pseudo-periodic signal of each respective time frame.

Abstract translation: 用于在存在噪声的情况下跟踪伪周期信号的基本频率的方法和系统，包括接收在预定环境中测量的信号的时间 - 频率表示; 在时间频率表示的每个时间帧，通过跟踪时间频率表示中的和谐频率的检测来估计和跟踪相应的伪周期信号的基频; 并且输出与每个相应时间帧的伪周期信号相关联的各个估计基本频率。

公开(公告)号：WO2017122099A1

公开(公告)日：2017-07-20

申请号：PCT/IB2017/050015

申请日：2017-01-04

Applicant: VOCALZOOM SYSTEMS LTD.

Inventor： BLUMKIN, Alexander ,  GANANI, Amir ,  FISHMAN, Tal ,  BAKISH, Tal

IPC: G01C3/08 ,  H01S3/00 ,  H04R29/00 ,  G01S17/50

CPC classification number: H04B10/506 ,  H04B10/503 ,  H04R23/008 ,  H04R23/02

Abstract: A laser-based device or sensor includes: a first laser transmitter having a first self-mix carrier frequency; a second laser transmitter having a second, different, self-mix carrier frequency; a first monitor photodiode to receive a first optical signal from the first laser transmitter, and to output a first electric signal; a second monitor photodiode to receive a first optical signal from the second laser transmitter, and to output a second electric signal; an electric connection to connect together the first electric signal and the second electric signal, forming a combined electric signal; a single laser receiver to receive the combined electric signal and to generate from it a spectrum that corresponds to both (i) optical feedback of the first laser transmitter, and (ii) optical feedback of the second laser transmitter. Alternatively, a single monitor photodiode is used, receiving optical signals from multiple laser transmitters, and outputting a single electric signal to a single laser receiver.

Abstract translation: 基于激光的设备或传感器包括：具有第一自混频载波频率的第一激光发射机; 具有不同的第二自混频载波频率的第二激光发射机; 第一监视器光电二极管，用于从第一激光发射器接收第一光信号并输出​​第一电信号; 第二监控光电二极管，用于从第二激光发射器接收第一光信号并输出​​第二电信号; 电连接，将第一电信号和第二电信号连接在一起，形成组合的电信号; 单个激光接收器接收组合的电信号并从中产生对应于（i）第一激光发射器的光学反馈和（ii）第二激光发射器的光学反馈两者的频谱。 或者，使用单个监视器光电二极管，接收来自多个激光发射器的光信号，并将单个电信号输出到单个激光接收器。

公开(公告)号：WO2017085571A1

公开(公告)日：2017-05-26

申请号：PCT/IB2016/055729

申请日：2016-09-26

Applicant: VOCALZOOM SYSTEMS LTD.

Inventor： BAKISH, Tal ,  LEVY, Gil ,  AVARGEL, Yekutiel

IPC: G10L21/02 ,  G10L15/20

CPC classification number: H04R3/005 ,  G10L21/0208 ,  G10L25/93 ,  G10L2021/02165 ,  H04R1/326 ,  H04R3/04 ,  H04R23/008 ,  H04R23/02 ,  H04R27/00 ,  H04R2430/20

Abstract: System, device, and method of sound isolation and signal enhancement. A hybrid device, or hybrid microphone, or a directional hybrid acoustic-and-optical microphone device, includes: a laser microphone to transmit a laser beam towards a sound-source, and to receive optical feedback reflected from a vibrating surface of the sound-source; an acoustic microphone to capture an acoustic signal which includes (i) sounds produced by the sound-source, and (ii) other concurrent sounds produced externally to the sound-source; a processing unit (a) to process the received optical feedback, and (b) to dynamically enhance the acoustic signal based on the received optical feedback. The processing unit includes or utilizes a digital filter constructor module to dynamically construct, based on the received optical feedback and based on the acoustic signals captured by the acoustic microphone, a digital filter to filter the other concurrent noises from the acoustic signal.

Abstract translation:

隔音和信号增强的系统，设备和方法。 本发明公开了一种混合设备或混合麦克风或定向混合声光麦克风设备，包括：激光麦克风，用于向激光源发射激光束，并用于接收从激励麦克风的振动表面反射的光反馈， 资源; 声音麦克风​​，用于捕捉包括（i）由声源产生的声音和（ii）在声源外部产生的其他同时发出的声音信号; 处理单元（a）处理所接收的光学反馈，以及（b）基于所接收的光学反馈动态地增强声学信号。 处理单元包括或利用数字滤波器构造器模块基于接收到的光学反馈并且基于由声学麦克风捕获的声学信号来动态构造数字滤波器以从声学信号中过滤其他噪声。

公开(公告)号：WO2017017568A1

公开(公告)日：2017-02-02

申请号：PCT/IB2016/054342

申请日：2016-07-21

Applicant: VOCALZOOM SYSTEMS LTD.

Inventor： BAKISH, Tal ,  AVARGEL, Yekutiel

IPC: G10L21/028 ,  G10L21/02

CPC classification number: G10L21/0272

Abstract: Device, system, and method of source separation, Blind Source Separation (BSS), signal processing, enhancement of acoustic signals, and reduction of noise from acoustic signals. A first acoustic microphone captures a first acoustic signal at a first location. A second acoustic microphone captures a second acoustic signal at a second location. An optical microphone or laser microphone, that targets or aims towards the first location and not towards the second location, captures an optical feedback signal. One or more correlator units, and one or more de-correlator units, perform particular correlation operations and de-correlation operations, among the first acoustic signal, the second acoustic signal, and the optical feedback signal; and produce, separately, a cleaned or reduced-noise version of the first acoustic signal, as well as a cleaned or reduced-noise version of the second acoustic signal. Optionally, two or more optical microphones or laser microphones are used, to achieve further improved Blind Source Separation.

Abstract translation: 信号源分离的设备，系统和方法，盲源分离（BSS），信号处理，声信号增强和声信号的降噪。 第一声​​学麦克风在第一位置捕获第一声信号。 第二声学麦克风在第二位置捕获第二声信号。 瞄准或瞄准第一位置而不朝向第二位置的光学麦克风或激光麦克风捕获光学反馈信号。 一个或多个相关器单元和一个或多个去相关器单元在第一声信号，第二声信号和光反馈信号中执行特定的相关运算和去相关运算; 并且单独地产生第一声信号的清洁或降噪版本，以及第二声信号的清洁或降噪噪声版本。 可选地，使用两个或更多个光学麦克风或激光麦克风，以实现进一步改进的盲源分离。

公开(公告)号：WO2014068552A1

公开(公告)日：2014-05-08

申请号：PCT/IL2013/050872

申请日：2013-10-27

Applicant: VOCALZOOM SYSTEMS LTD

Inventor： BAKISH, Tal

IPC: G10L15/00 ,  G10L17/00 ,  G10L25/00 ,  G01H9/00 ,  H04R23/00

CPC classification number: H04R23/008 ,  A41D13/11

Abstract: A system for detection of speech related acoustic signals by using laser based detection that includes a mask configured for being worn over a face part of a speaker covering the speaker's mouth, where the mask includes at least one reflective coating covering at least one area of the mask that reflects collimated electromagnetic signals; and a laser microphone configured for detecting vibrations of the reflective coating area for detection of acoustic signals associated with speech of the speaker by using collimated electromagnetic signals. The mask the reflective coating area thereof allow enhancing detection of vibrations resulting from speech carried out by the speaker wearing said mask.

Abstract translation: 一种用于通过使用基于激光的检测来检测语音相关声信号的系统，该系统包括被配置为佩戴在覆盖扬声器的嘴的扬声器的面部部分上的掩模，其中该掩模包括至少一个反射涂层，其覆盖至少一个区域 反映准直电磁信号的掩模; 以及激光麦克风，其被配置为检测所述反射涂层区域的振动，以通过使用准直电磁信号来检测与所述扬声器的语音相关联的声信号。 掩模的反射涂层区域允许增强由佩戴所述掩模的扬声器进行的语音产生的振动的检测。

公开(公告)号：WO2019058366A8

公开(公告)日：2019-03-28

申请号：PCT/IL2018/051041

申请日：2018-09-17

Applicant: VOCALZOOM SYSTEMS LTD.

Inventor： FISHMAN, Tal ,  BAKISH, Tal

IPC: G01S7/491 ,  H01S5/18

Abstract: A device has a laser unit, which includes: a top-side p-type DBR region; which is on top of and in direct touch with an active region; which is on top of and in direct touch with a bottom-side n-type Distributed Bragg Reflector (DBR) region; which is on top of a n-type substrate. The laser unit further includes a voltage measurement anode touching or being in proximity to a top surface of the active region; and a voltage measurement cathode touching or being in proximity to a bottom surface of the active region. The voltage between the voltage measurement anode and the voltage measurement cathode is directly measured; and is utilized for determining characteristics of a laser self-mix signal of the laser unit, without having or using a monitor photo-diode.