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11 条记录 (耗时 0.01 秒)

    CIRCUIT AND METHOD FOR REDUCING NOISE IN CLASS D AMPLIFIERS
    2.
    发明公开
    CIRCUIT AND METHOD FOR REDUCING NOISE IN CLASS D AMPLIFIERS 审中-公开
    KLASSE-D-VERSTÄRKERN的SCHALTKREIS UND VERFAHREN ZUR RAUSCHVERMINDERUNG

    公开(公告)号：EP2491650A1

    公开(公告)日：2012-08-29

    申请号：EP10825553.0

    申请日：2010-10-19

    申请人： Meyer Sound Laboratories, Incorporated

    发明人： KOHUT, Paul ,  WINSHIP, Peter, L. ,  KOWALCYZK, Peter ,  METZ, Steven ,  KEOWN, Kurt

    IPC分类号： H03F3/217

    CPC分类号： H03F3/2173 ,  H03F1/0222 ,  H03F2200/03 ,  H03F2203/21181 ,  H03F2203/21193

    摘要： A circuit for reducing noise in Class D amplifiers has a power stage voltage control means (17, 21, 22) responsive to defined signal conditions of the audio signal input (1). The power stage voltage control means is operative to lower the voltage at the supply voltage input (31) of the amplifier's switching power output stage (30) upon the detection of a defined condition in the audio signal input such that the Class-D amplifier operates at reduced voltage ("idles") during the defined audio input signal condition.

    摘要翻译： 用于降低D类放大器噪声的电路具有响应于音频信号输入（1）的定义的信号条件的功率级电压控制装置（17,21,22）。 功率级电压控制装置用于在检测音频信号输入中的限定条件时降低放大器的开关功率输出级（30）的电源电压输入端（31）处的电压，使得D类放大器工作 在定义的音频输入信号条件期间以降低的电压（空闲）。

    HEARING AID HAVING LEVEL AND FREQUENCY-DEPENDENT GAIN
    4.
    发明公开
    HEARING AID HAVING LEVEL AND FREQUENCY-DEPENDENT GAIN 审中-公开
    助听器与水平和频率相关增益

    公开(公告)号：EP2885872A2

    公开(公告)日：2015-06-24

    申请号：EP13829129.9

    申请日：2013-08-14

    申请人： Meyer Sound Laboratories, Incorporated

    发明人： MEYER, John, D. ,  SZUTS, Toban, A.

    IPC分类号： H03G9/20 ,  H04R25/02 ,  G01L21/02

    CPC分类号： H04R25/353 ,  H04R25/50 ,  H04R25/505 ,  H04R2225/025 ,  H04R2460/09

    摘要： An improved open-ear hearing aid to compensate for hearing loss includes a microphone for picking up incident sound and converting it to an electrical audio signal. An ear insert positionable within a human ear canal is provided for producing an output sound amplified within one or more frequency bands in response to incident sound picked up by the microphone. The in-band gain of the amplified sound output of the ear insert's loudspeaker is dependent on the user's hearing loss characteristics and the sound pressure levels of the incident sound. The form of the ear insert allows transmission of incident sound directly to the eardrum, where it is summed at the eardrum with the amplified sound output from the ear insert. Sound output is maximum at low incident sound pressure levels and minimum when the incident sound exceeds a set cut-off level.

    LOUDSPEAKER WITH PASSIVE LOW FREQUENCY DIRECTIONAL CONTROL
    5.
    发明公开
    LOUDSPEAKER WITH PASSIVE LOW FREQUENCY DIRECTIONAL CONTROL 审中-公开
    被动低频控制方向SPEAKER

    公开(公告)号：EP2409499A1

    公开(公告)日：2012-01-25

    申请号：EP10754192.2

    申请日：2010-03-19

    申请人： Meyer Sound Laboratories, Incorporated

    发明人： MEYER, John, D. ,  MAMIN, Jean, Pierre ,  ESPINOSA, Pablo ,  KOWALCZYK, Peter

    IPC分类号： H04R25/00

    CPC分类号： H04R1/323 ,  H04R1/288 ,  H04R1/347

    摘要： A loudspeaker is provided that passively achieves a directional polar response at low frequencies with a high degree of attenuation between the front and the back of the loudspeaker. The loudspeaker 11 has a transducer 13, an enclosure 21 behind the transducer, and port openings 29 in the sidewalls 23 of the enclosure to allow a back- wave produced by the transducer to exit the enclosure and combine with the front wave produced by the transducer. Cancellation behind the loudspeaker at low frequencies is achieved by delaying the back wave with low loss. Low loss delay at low frequencies is achieved by inserting a low-density fibrous fill material 33 in the acoustic chamber 27 formed behind the transducer 13 by the enclosure 21. A fibrous material is selected having a low-pass transfer function and low acoustic loss in its low- frequency pass band.

    LOUDSPEAKER RIGGING SYSTEM HAVING UPWARDLY EXTENDING CONNECTING LINKS
    7.
    发明公开
    LOUDSPEAKER RIGGING SYSTEM HAVING UPWARDLY EXTENDING CONNECTING LINKS 有权
    凭借高达伸出相关链接议会议长SYSTEM

    公开(公告)号：EP2744370A1

    公开(公告)日：2014-06-25

    申请号：EP12823761.7

    申请日：2012-08-16

    申请人： Meyer Sound Laboratories, Incorporated

    发明人： MCGHEE, John ,  RUBIO, Alejandro, Garcia ,  ESPINOSA, Pablo

    IPC分类号： A47B81/06

    CPC分类号： H04R1/026 ,  H04R1/02 ,  H04R1/403 ,  H04R27/00 ,  H04R2201/025 ,  H04R2201/401

    摘要： A loudspeaker rigging system having upwardly extending connecting links comprises splay adjustment and pivot links (36, 38) slidingly disposed in splay adjustment and pivot link stowing channels (118, 120) in a frame structure (48) for the sides of a loudspeaker in a stack of loudspeakers, the splay adjustment and pivot links upwardly movable from stowed to linking positions, in the linking position the splay adjustment and pivot links linkable with locking pin holes (66, 68) in the bottom of the frame structure of a superjacent loudspeaker, the splay adjustment link having a plurality of splay angle slots (94) of various lengths, the splay angle slots aligned with a plurality of splay angle selection pin holes (64) in the frame structure, such that upon insertion of a linking pin (50) in a selected splay angle selection pin hole and corresponding aligned splay angle slot the splay angle link may be raised upward to a selected splay angle.