公开(公告)号：WO2017011403A1

公开(公告)日：2017-01-19

申请号：PCT/US2016/041787

申请日：2016-07-11

Applicant: KNOWLES ELECTRONICS, LLC

Inventor： NANDY, Dibyendu ,  LI, Yang ,  RAGHUVIR, Ramanujapuram ,  POPPER, Robert A. ,  PAWLOWSKI, Andrzej ,  BERTHELSEN, Kim Spetzler ,  THOMSEN, Henrik ,  WARREN, Niel, D. ,  ROSSUM, David, P.

IPC: G10L21/0224 ,  G10L21/02

CPC classification number: G10L15/22 ,  G06F1/3206 ,  G10L15/30 ,  G10L25/48 ,  G10L25/78 ,  H04R3/00 ,  H04R3/005 ,  H04R19/04 ,  H04R2201/003

Abstract: At a microphone, voice activity is detected in a data stream while simultaneously buffering audio data from the data stream to create buffered data. A signal is sent to a host indicating the positive detection of voice activity in the data stream. When an external clock signal is received from the host, the internal operation of the microphone is synchronized with the external clock signal. Buffered data stream is selectively sent through a first path, the first path including a buffer having a buffer delay time representing the time the first data stream takes to move through the buffer. The data stream is continuously sent through a second path as a real time data stream, the second path not including the buffer, the real time data stream beginning with the extended buffer data at a given instant in time. The buffered data stream and the real time data stream are multiplexed onto a single data line and transmitting the multiplexed data stream to the host.

Abstract translation: 在麦克风上，在数据流中检测到语音活动，同时从数据流缓冲音频数据以创建缓冲数据。 信号被发送到主机，指示数据流中的语音活动的肯定检测。 当从主机接收到外部时钟信号时，麦克风的内部操作与外部时钟信号同步。 缓冲数据流被选择性地通过第一路径发送，第一路径包括缓冲器，缓冲器具有表示第一数据流在缓冲器中移动的时间的缓冲延迟时间。 数据流通过作为实时数据流的第二路径连续发送，第二路径不包括缓冲器，在给定时刻从扩展缓冲器数据开始的实时数据流。 将缓冲的数据流和实时数据流复用到单个数据线上，并将多路复用的数据流发送到主机。

公开(公告)号：WO2016130520A1

公开(公告)日：2016-08-18

申请号：PCT/US2016/017110

申请日：2016-02-09

Applicant: KNOWLES ELECTRONICS, LLC

Inventor： RAGHUVIR, Ramanujapuram

IPC: G10L15/22 ,  G10L15/28

CPC classification number: G10L15/22 ,  G10L15/32 ,  G10L25/78 ,  G10L2015/088 ,  G10L2015/223 ,  H04R3/005 ,  H04R2201/003

Abstract: A first microphone is operated in a low power sensing mode, and a buffer at the first microphone is used to temporarily store at least some of the phrase. Subsequently the first microphone is deactivated, then the first microphone is re-activated to operate in normal operating mode where the buffer is no longer used to store the phrase. The first microphone forms first data that does not include the entire phrase. A second microphone is maintained in a deactivated mode until the trigger portion is detected in the first data, and when the trigger portion is detected, the second microphone is caused to operate in normal operating mode where no buffer is used. The second microphone forms second data that does not include the entire phrase. A first electronic representation of the phrase as received at the first microphone and a second electronic representation of the phrase as received at the second microphone are formed from selected portions of the first data and the second data.

Abstract translation: 第一麦克风以低功率感测模式操作，并且第一麦克风处的缓冲器用于临时存储短语中的至少一些。 随后，第一个麦克风被禁用，然后第一个麦克风被重新激活，以在正常操作模式下运行，其中缓冲区不再用于存储短语。 第一个麦克风形成不包括整个短语的第一个数据。 第二麦克风保持在去激活模式，直到在第一数据中检测到触发部分，并且当检测到触发部分时，使第二麦克风在没有使用缓冲器的正常操作模式下操作。 第二麦克风形成不包括整个短语的第二数据。 从第一数据和第二数据的选定部分形成第一麦克风接收的短语的第一电子表示和第二麦克风接收的短语的第二电子表示。

公开(公告)号：WO2016133722A1

公开(公告)日：2016-08-25

申请号：PCT/US2016/016706

申请日：2016-02-05

Applicant: KNOWLES ELECTRONICS, LLC

Inventor： POPPER, Robert ,  NANDY, Dibyendu ,  RAGHUVIR, Ramanujapuram ,  QUTUB, Sarmad ,  KHAMHARN, Oddy

IPC: H04R19/04 ,  H04R3/00

CPC classification number: H04R1/04 ,  B81B7/008 ,  B81B2201/0257 ,  H04R3/005 ,  H04R19/005 ,  H04R2201/003 ,  H04R2420/07

Abstract: A microphone system includes a first transducer deployed at a first microphone; a second transducer deployed at a second microphone, the first microphone being physically distinct from the second microphone; a decimator deployed at the second microphone that receives first pulse density modulation (PDM) data from the first transducer and second PDM data from the second transducer and decimates and combines the first PDM data and the second PDM data into combined pulse code modulation (PCM) data; and an interpolator deployed at the second microphone for converting the combined PCM data to combined PDM data, and transmits the combined PDM data to an external processing device.

Abstract translation: 麦克风系统包括在第一麦克风处部署的第一换能器; 第二传感器部署在第二麦克风处，第一麦克风在物理上不同于第二麦克风; 在第二麦克风处部署的抽取器，其从第一传感器接收第一脉冲密度调制（PDM）数据和从第二传感器接收第二PDM数据，并将第一PDM数据和第二PDM数据抽取并组合成组合的脉码调制（PCM） 数据; 以及部署在第二麦克风处的内插器，用于将组合的PCM数据转换成组合的PDM数据，并将组合的PDM数据发送到外部处理装置。