Programmable hybrid hearing aid with digital signal processing
    1.
    发明授权
    Programmable hybrid hearing aid with digital signal processing 失效
    可编程混合助听器,具有数字信号处理功能

    公开(公告)号:US5276739A

    公开(公告)日:1994-01-04

    申请号:US852242

    申请日:1992-05-26

    CPC classification number: H04R25/453 H04R25/505

    Abstract: Programmable hybrid hearing aid with digital signal processing comprising a main section (1) which can be inserted in the meatus (6). The main section (1) comprises an open connection between the ear opening and an inner portion of the meatus (6), providing an acoustic transmission channel with low-pass characteristic and resonant amplification. The main section further comprises an electroacoustic transmission channel based on digital signal processing and a signal processor (DSP) and with possibility for suppressing a possible acoustic signal feedback through the acoustic transmission channel. A variant of the hearing aid is provided with a microphone (M1) and the feedback signal is suppressed by digital filtering. Another variant of the hearing aid employs two microphones (M1.M2). and the feedback signal may then be suppressed by phasing out before the digital signal processing, while the digital signal processing also comprises cancellation of the feedback signal in case of high gain. A number of response functions are stored in a memory (RAM2) in a control unit and is freely chosen by the user in regard of adaption to hearing function and acoustic environment. All the electronics of the electroacoustic channel in the hearing aid is implemented as a monolithic integrated circuit (3) in CMOS technology.

    Abstract translation: PCT No.PCT / NO90 / 00178 Sec。 371日期:1992年5月26日 102(e)日期1992年5月26日PCT 1990年11月29日PCT PCT。 公开号WO91 / 08654 日期:1991年6月13日。具有数字信号处理的可编程混合式助听器,包括可插入口(6)的主要部分(1)。 主要部分(1)包括耳孔和口部(6)的内部之间的开放连接,提供具有低通特性和谐振放大的声传播通道。 主要部分还包括基于数字信号处理的电声传输通道和信号处理器(DSP),并且具有通过声传输通道抑制可能的声信号反馈的可能性。 助听器的一个变体设置有麦克风(M1),并且通过数字滤波来抑制反馈信号。 助听器的另一个变体使用两个麦克风(M1.M2)。 然后可以在数字信号处理之前通过逐步淘汰来抑制反馈信号,而数字信号处理还包括在高增益情况下的反馈信号的消除。 多个响应功能被存储在控制单元中的存储器(RAM2)中,并且可以由使用者根据听觉功能和声学环境自适应地选择。 助听器中电声通道的所有电子元件都实现为CMOS技术中的单片集成电路(3)。

    Electrodynamic sound generator for hearing aids
    2.
    发明授权
    Electrodynamic sound generator for hearing aids 失效
    用于听觉艾滋病的电动声发生器

    公开(公告)号:US5243662A

    公开(公告)日:1993-09-07

    申请号:US781149

    申请日:1991-12-13

    Abstract: A miniaturized electrodynamic sound generator comprises a diaphragm, a permanent magnet with pole pieces, a magnet yoke, and a coil. The yoke is designed such that is constitutes a housing or a cabinet of the sound generator. The permanent magnet and the pole pieces are provided in a recess in the cabinet or the yoke and surrounded by the coil, which is connected to the diaphragm at a peripheral area thereof. The diaphragm is provided above the magnet system of the recess and fastened to the outside of the cabinet. The dynamic response of the sound generator is determined by the magnetic, electrical, mechanical, and acoustic parameters which are used in the design of the sound generator. By varying some of these parameters, the frequency and amplitude of a resonance may be chosen such that the sound generator may reconstruct the natural acoustic transfer function in the range of 2-4 kHz in the human meatus. This makes the sound generator particularly suitable for use in hearing aids.

    Abstract translation: PCT No.PCT / NO90 / 00111 Sec。 371日期1991年12月31日 102(e)1991年12月31日PCT PCT 1990年7月5日PCT公布。 公开号WO91 / 01075 日期:1991年1月24日。小型化电动声发生器包括隔膜,具有极片的永磁体,磁轭和线圈。 轭被设计成构成声发生器的壳体或柜体。 永磁体和极片设置在机壳或磁轭中的凹部中,并被线圈围绕,线圈在其周边区域连接到振动膜。 隔膜设置在凹槽的磁体系统的上方并固定到机柜的外部。 声发生器的动态响应由在声发生器设计中使用的磁,电,机械和声学参数确定。 通过改变这些参数中的一些,可以选择谐振的频率和振幅,使得声音发生器可以在人口中重建2-4kHz范围内的自然声学传递函数。 这使得声音发生器特别适用于助听器。

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