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公开(公告)号：US07317801B1
公开(公告)日：2008-01-08
申请号：US09120973
申请日：1998-07-22
申请人： Nehemia Amir
发明人： Nehemia Amir
CPC分类号： G10K11/178 , G10K2210/12 , G10K2210/3039 , G10K2210/505
摘要： An active acoustic noise reduction system which comprises a single input transducer and an output actuator that are physically located next to each other in the same location. In one embodiment, the input transducer and the output actuator are a hybrid represented by a single element. The active noise reduction system is located as close as possible to the noise source and functions to generate an antinoise cancellation sound wave with minimum delay and opposite phase with respect to the noise source. The noise reduction system also comprises a non linearity correction circuit, a delayed cancellation circuit and variable gain amplifier. The system provides user control of the quiet zones generated by the system by varying the gain of the variable gain amplifier. The system provides a user with the ability In one embodiment, an echo canceler is utilized to remove echoes fed back from the output actuator. In another embodiment, an input decoder is used instead of an echo canceler to remove feedback picked up from the output actuator.
摘要翻译： 一种主动声学噪声降低系统，其包括物理上位于相同位置处彼此相邻的单个输入传感器和输出致动器。 在一个实施例中，输入传感器和输出致动器是由单个元件表示的混合。 有源噪声降低系统尽可能靠近噪声源并且用于产生相对于噪声源具有最小延迟和相反相位的抗噪声消除声波。 降噪系统还包括非线性校正电路，延迟消除电路和可变增益放大器。 该系统通过改变可变增益放大器的增益来提供系统产生的安静区域的用户控制。 系统为用户提供了能力。在一个实施例中，使用回波消除器来去除从输出致动器反馈的回波。 在另一个实施例中，使用输入解码器代替回波消除器以去除从输出致动器拾取的反馈。
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公开(公告)号：US20050265783A1
公开(公告)日：2005-12-01
申请号：US11045844
申请日：2005-01-31
申请人： Nehemia Amir
发明人： Nehemia Amir
CPC分类号： E01F9/529
摘要： Methods for arrangement of studs or dents over the road surface in a way that when a vehicle passes on the road, a desired sound that is dependent on the driving speed and the arrangement and properties of the studs or dents is generated into the vehicle. The studs or dents are attached to the road and used to pass audio information such as warnings to the driver.
摘要翻译： 在车辆通过道路时，在道路表面上布置螺栓或凹痕的方法，产生依赖于行驶速度的所需声音以及螺柱或凹痕的布置和性质。 螺柱或凹痕连接到道路上，用于将诸如警告的音频信息传递给驾驶员。
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