Fast amplitude detector and automatic gain control

    公开(公告)号:US11984861B2

    公开(公告)日:2024-05-14

    申请号:US18116755

    申请日:2023-03-02

    IPC分类号: H03G3/30 H03F3/24

    CPC分类号: H03G3/3036 H03F3/24

    摘要: An amplitude detector has a phase shifter such as one using an analog differentiator and an adjustable gain stage, or one using a determinable delay, the phase shifter coupled to shift phase of an input signal to the amplitude detection apparatus. The detector also has a first analog multiplier coupled to square the input signal, a second analog multiplier coupled to square output of the phase shifter; and an analog adder coupled to sum outputs of the first and second analog multiplier. An automatic gain control circuit has the amplitude detector coupled to control gain of a controllable amplifier.

    MEDIA PRESENTATION DEVICE OR MICROPHONE CALIBRATION VIA EVENT DETECTION

    公开(公告)号:US20240146273A1

    公开(公告)日:2024-05-02

    申请号:US18493143

    申请日:2023-10-24

    申请人: Caavo Inc

    IPC分类号: H03G3/32 G06F3/16

    CPC分类号: H03G3/32 G06F3/165

    摘要: Systems, methods, and computer readable storage medium are described for media presentation device or microphone calibration via event detection. An adjustment event is detected based on an analysis of a received signal. A determination to adjust at least one of a volume setting of a media presentation device or a gain setting of a microphone is made based at least on the detected adjustment event. Responsive to the determination, a first command is transmitted to at least one of the media presentation device or the microphone. In an aspect, the received signal is an audio data signal received from a listening device. In another aspect, the received signal is a command signal received from a second computing device via a network interface, the command signal comprising instructions to adjust the volume setting of the media presentation device, the second computing device remotely located and associated with a second user.

    SWITCHABLE CLAMPS ACROSS ATTENUATORS
    35.
    发明公开

    公开(公告)号:US20240137059A1

    公开(公告)日:2024-04-25

    申请号:US18499138

    申请日:2023-10-30

    申请人: pSemi Corporation

    摘要: Methods and devices for limiting the power level of low noise amplifiers (LNA) implemented in radio frequency (RF) receiver front-ends. The described methods are applicable to bypass, low and high gain modes of the LNA. According to the described methods, the decoder allows the signal to be clamped before or after being attenuated. The benefit of such methods is to improve large signal performances (e.g. IIP3, P1dB) of the RF receiver front-end, while still meeting the clamping requirements, or improve (lower) clamped output power, while still meeting large signal performances (e.g. IIP3, P1dB).

    Hearing device or system comprising a communication interface

    公开(公告)号:US11968500B2

    公开(公告)日:2024-04-23

    申请号:US17720744

    申请日:2022-04-14

    申请人: Oticon A/S

    IPC分类号: H04R25/00 H03G5/00

    摘要: A hearing device, e.g. a hearing aid, comprises a) at least one input transducer for converting sound in the environment of the hearing device to respective at least one acoustically received electric input signal or signals representing said sound; b) a wireless receiver for receiving an audio signal from a wireless transmitter of a sound capturing device for picking up sound in said environment and providing a wirelessly received electric input signal representing said sound; and c) a processor configured c1) to receive said at least one acoustically received electric input signal or signals, or a processed version thereof; c2) to receive said wirelessly received electric input signal; and c3) to provide a processed signal. The processor comprises a signal predictor for estimating future values of said wirelessly received electric input signal in dependence of a multitude of past values of said signal, thereby providing a predicted signal. The hearing device further comprises d) an output transducer for presenting output stimuli perceivable as sound to the user in dependence of said processed signal from said processor, or a further processed version thereof. The processor is configured to provide said processed signal in dependence of the predicted signal or a processed version thereof 1) alone, or 2) mixed with said at least one acoustically received electric input signal or signals, or a processed version thereof. A hearing device comprising an earpiece and a separate audio processing device is further disclosed. The invention may e.g. be used in hearing devices in wireless communication with audio capture devices in an immediate environment of the user wearing the hearing device.

    Engine
    39.
    发明授权
    Engine 有权

    公开(公告)号:US11959416B1

    公开(公告)日:2024-04-16

    申请号:US18488037

    申请日:2023-10-17

    发明人: Yuto Yoshizaki

    IPC分类号: F02B77/13 H02G3/04 H03G3/04

    CPC分类号: F02B77/13 H02G3/0437

    摘要: An engine includes a cylinder head, a wire assembly including multiple wire harnesses and a protector that holds the wire harnesses together, a sound absorber, and an engine cover. The engine cover is attached to the cylinder head in a state in which the wire assembly and the sound absorber are held between the cylinder head and the engine cover to elastically deform the sound absorber. The protector is held in a state of being pressed against the cylinder head by a restoring force of the sound absorber. The sound absorber includes a contact region pressed against the protector. The sound absorber includes an engagement portion located at an edge of the contact region. The engagement portion is thicker than the thickness of the contact region. The engagement portion is adjacent to a side surface of the protector.

    IDENTIFYING SIGNAL INTERFERENCE SOURCES
    40.
    发明公开

    公开(公告)号:US20240121020A1

    公开(公告)日:2024-04-11

    申请号:US18545490

    申请日:2023-12-19

    摘要: Devices, systems and processes for identifying and detecting an interfering signal are described. A process may include conducting a scan of one or more frequency bands to obtain at least one scan result and determining therefrom if a response condition has been detected. If so detected, a first frequency band corresponding to the detected response condition may be identified and a response condition action to be performed determined. If no response condition action is to be performed, scanning continues. If a response condition is to be performed two or more available sensors are identified and a first sensor is selected. A scan plan is developed and then initiated by the first sensor. Data from the first sensor is received and analyzed to identify a second frequency band indicative of an interfering signal. Based on at least the scan data, a location for a signal interference source (SIS) may be estimated.