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    • 94. 发明授权
    • Multi-frequency alarm for emitting narrow band noise
    • 用于发射窄带噪声的多频报警
    • US09527439B2
    • 2016-12-27
    • US14426639
    • 2013-09-10
    • Electronic Controls Company
    • Grant Juel
    • B60Q5/00B06B1/02G08B3/10G10K9/12G08G1/005
    • B60Q5/006B06B1/0269B60Q5/00G08B3/10G08G1/005G10K9/12
    • A multi-frequency alarm (10) generates a narrow band noise (MFA-87, -97, 102, -107) warning of a presence of a vehicle. The alarm includes noise signal circuitry (30) generating a pseudorandom bit stream to produce a noise signal that exhibits a multi-frequency spectrum; an active low-pass filter (40) receiving the noise signal and producing a narrow band noise signal, the active low-pass filter configured to establish for the narrow band noise signal spectral characteristics exhibiting a high-frequency noise signal magnitude roll-off that attenuates frequencies greater than 4 kHz; an audio amplifier (50) producing an amplified narrow band noise signal; and an audio speaker (60) responsive to the amplified narrow band noise signal and configured to emit narrow band noise sound derived from the narrow band noise signal.
    • 多频报警器(10)产生车辆存在的窄带噪声(MFA-87,-97,102,107)警告。 报警器包括产生伪随机比特流的噪声信号电路(30),以产生呈现多频谱的噪声信号; 有源低通滤波器(40),其接收噪声信号并产生窄带噪声信号,该有源低通滤波器被配置为针对出现高频噪声信号幅度滚降的窄带噪声信号频谱特性建立, 衰减大于4 kHz的频率; 产生放大的窄带噪声信号的音频放大器(50); 以及音频扬声器(60),响应于放大的窄带噪声信号并被配置为发射从窄带噪声信号导出的窄带噪声声音。
    • 100. 发明授权
    • Electropneumatic horn with air venting channels
    • 带气道的电动气动喇叭
    • US07938078B2
    • 2011-05-10
    • US12732367
    • 2010-03-26
    • Stanley Solow
    • Stanley Solow
    • G10K9/04G10K9/12
    • G10K9/04
    • The present electric horn system includes a monolithic rigid housing member having a receiving opening for fixably housing, in a non-removable and secure manner following assembly, a compressor member, thereby preventing unintended separation and improving a reliability of the electric horn system. An acoustic sound wave generator includes an acoustic duct chambering system associated throughout with the monolithic rigid housing member. The acoustic sound wave generator receives compressed air from the compressor member to produce sound and propagate the same externally. A horn mounting system enables ready attachment of the system to a consumer-desired surface: mechanically, magnetically, adhesively, or via any other known attachment or mounting system. Optional weather and water resistant systems prohibit unintended water access to the electric horn system enabling use of the system in exposed weather conditions for improved user convenience.
    • 本发明的电喇叭系统包括一个整体式刚性壳体构件,其具有用于在组装之后以不可拆卸和固定的方式可固定地容纳住接收开口的压缩构件,从而防止意外分离并提高电喇叭系统的可靠性。 声音波发生器包括与整体式刚性外壳构件整体相关联的声管腔室系统。 声波发生器接收来自压缩机构件的压缩空气以产生声音并在外部传播。 喇叭安装系统能够将系统准备好地附接到消费者所期望的表面上:机械地,磁地地,粘性地,或者通过任何其他已知的附接或安装系统。 可选的天气和防水系统禁止意外吸入电喇叭系统,使暴露天气条件下的系统能够使用,从而提高用户便利性。