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    Active noise cancelation with controllable levels
    22.
    发明授权
    Active noise cancelation with controllable levels 有权

    公开(公告)号：US10049653B2

    公开(公告)日：2018-08-14

    申请号：US15570273

    申请日：2016-10-14

    Applicant: Avnera Corporation

    Inventor： Amit Kumar ,  Eric Sorensen

    IPC: G10K11/178

    Abstract: A system including an automatic noise canceling (ANC) headphone and a processor. The ANC headphone has a microphone configured to generate a microphone signal and at least two non-zero ANC gain levels. The processor is configured to receive the microphone signal, determine a characteristic of the microphone signal, identify a revised ANC level from the ANC gain levels based on a comparison of the characteristic to at least one threshold, and output a signal corresponding to the revised ANC level. Methods are also disclosed.

    RING NETWORK OF BLUETOOTH SPEAKERS
    26.
    发明申请
    RING NETWORK OF BLUETOOTH SPEAKERS 有权

    公开(公告)号：US20170272861A1

    公开(公告)日：2017-09-21

    申请号：US15613738

    申请日：2017-06-05

    Applicant: Avnera Corporation

    Inventor： Theodore Hetke ,  John Speth

    IPC: H04R3/12 ,  H04W4/00

    CPC classification number: H04R3/12 ,  H04R2420/07 ,  H04R2420/09 ,  H04R2430/01 ,  H04W4/80

    Abstract: A method for forming a complete ring network of a plurality of Bluetooth® speakers, the method including populating a configurable speaker register of each of the plurality of Bluetooth® speakers with an address of an upstream Bluetooth® speaker that is in the plurality of Bluetooth® speakers, populating the configurable speaker register of each of the plurality of Bluetooth® speakers with an address of a downstream Bluetooth® speaker that is in the plurality of Bluetooth® speakers, and coupling an audio source to one Bluetooth® speaker of the plurality of Bluetooth® speakers.

    ACOUSTIC PROCESSOR HAVING LOW LATENCY
    28.
    发明申请
    ACOUSTIC PROCESSOR HAVING LOW LATENCY 有权
    具有低声望的声音处理器

    公开(公告)号：US20170034619A1

    公开(公告)日：2017-02-02

    申请号：US15294556

    申请日：2016-10-14

    Applicant: Avnera Corporation

    Inventor： Amit Kumar ,  Thomas Irrgang ,  Xudong Zhao

    IPC: H04R3/00 ,  G10K11/178

    CPC classification number: H04R3/005 ,  G10K11/178 ,  G10K2210/3028 ,  G10K2210/3051 ,  G10K2210/3056 ,  H04R1/1083 ,  H04R2410/05

    Abstract: An audio system having low latency includes a digital audio processor as well as sensor inputs coupled to the processor. The sensor inputs may be microphone inputs. The audio processor operates at the same frequency as the sensor inputs, which is typically much higher than an audio signal provided to the audio processor. In some aspects the audio processor operates as a noise cancellation processor and does not include an audio input.

    Abstract translation: 具有低延迟的音频系统包括数字音频处理器以及耦合到处理器的传感器输入。 传感器输入可以是麦克风输入。 音频处理器的工作频率与传感器输入的频率相同，传感器输入通常远高于提供给音频处理器的音频信号。 在一些方面，音频处理器用作噪声消除处理器，并且不包括音频输入。

    Method and apparatus for dynamically allocating memory address space between physical memories
    29.
    发明授权
    Method and apparatus for dynamically allocating memory address space between physical memories 有权
    在物理存储器之间动态分配存储器地址空间的方法和装置

    公开(公告)号：US09298600B2

    公开(公告)日：2016-03-29

    申请号：US13738709

    申请日：2013-01-10

    Applicant: Avnera Corporation

    Inventor： Ole Bentz ,  Robert Mays ,  Bruce Nepple ,  James Anderson

    IPC: G06F12/00 ,  G06F12/02 ,  G06F12/06

    CPC classification number: G06F12/0223 ,  G06F12/0638 ,  G06F2212/1012 ,  G06F2212/205

    Abstract: A memory address space for each of a plurality of physical memories in a microprocessor-based system is allocated prior to knowing the desired logical size of at least one of the physical memories. At least two of the allocated memory address spaces overlap at least a portion of each other. After the system is fabricated, a pointer value set that corresponds to an address boundary between at least two physical memories of the fabricated system is set during boot time and/or during run time when the size of the physical memories are known. The technique provides a faster time-to-market for microprocessor-based systems by allowing, for example, Application Specific Integrated Circuits (ASICs) comprising microprocessor systems on-chip be manufactured prior to the final firmware and software being fully developed. Additionally, the subject matter disclosed herein permits changes in memory-space allocation for finalized ASIC designs.

    Abstract translation: 在知道至少一个物理存储器的期望的逻辑大小之前，分配用于基于微处理器的系统中的多个物理存储器中的每一个的存储器地址空间。 所分配的存储器地址空间中的至少两个与彼此的至少一部分重叠。 在制造系统之后，在引导时间和/或在运行时间期间设置物理存储器的大小已知时，设置对应于所制造的系统的至少两个物理存储器之间的地址边界的指针值集合。 该技术通过允许例如在最终固件和软件完全开发之前制造包括芯片上的微处理器系统的专用集成电路（ASIC）来为基于微处理器的系统提供更快的上市时间。 此外，本文公开的主题允许最终ASIC设计的存储空间分配的改变。

    User voice activity detection
    30.
    发明授权
    User voice activity detection 有权

    公开(公告)号：US11614916B2

    公开(公告)日：2023-03-28

    申请号：US16730134

    申请日：2019-12-30

    Applicant: AVNERA CORPORATION

    Inventor： Jiajin An ,  Michael Jon Wurtz ,  David Wurtz ,  Manpreet Khaira ,  Amit Kumar ,  Shawn O'Connor ,  Shankar Rathoud ,  James Scanlan ,  Eric Sorensen

    IPC: G10L25/00 ,  G06F3/16 ,  G10L25/84 ,  H04R1/10 ,  H04R3/00 ,  G10L15/08 ,  G10L15/22 ,  H04R1/40 ,  G10K11/178 ,  H04R5/033 ,  G06F1/3206 ,  G06F1/3287

    Abstract: Many headsets include automatic noise cancellation (ANC) which dramatically reduces perceived background noise and improves user listening experience. Unfortunately, the voice microphones in these devices often capture ambient noise that the headsets output during phone calls or other communication sessions to other users. In response, many headsets and communication devices provide manual muting circuitry, but users frequently forget to turn the muting on and/or off creating further problems as they communicate. To address this, the present inventors devised, among other things, an exemplary headset that detects the absence or presence of user speech, automatically muting and unmuting the voice microphone without user intervention. Some embodiments leverage relationships between feedback and feedforward signals in ANC circuitry to detect user speech, avoiding the addition of extra hardware to the headset. Other embodiments also leverage the speech detection function to activate and deactivate keyword detectors, and/or sidetone circuits, thus extending battery.

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