-
公开(公告)号：US08340307B2
公开(公告)日：2012-12-25
申请号：US12583139
申请日：2009-08-13
IPC分类号： H03G11/00
摘要： A passive sound pressure level (SPL) limiter is provided that can be used with audio sources of varying drive levels and headsets, earbuds, etc. of varying sensitivity. The SPL limiter includes a control circuit that includes a rectifier and, in most configurations, a step-up transformer. The SPL limiter also includes a limiting circuit that utilizes a transistor to shunt current from the audio source in proportion to a control signal output by the control circuit. The control circuit may further include a low pass filter, for example an RC filter, and one or more fast limit diode paths. The limiting circuit may further include a feedback network to increase the linear behavior of the limiting circuit.
摘要翻译： 提供了一种被动声压级（SPL）限制器，可用于不同驱动级别的音频源和不同灵敏度的耳机，耳塞等。 SPL限幅器包括一个控制电路，其包括整流器，并且在大多数配置中包括升压变压器。 SPL限幅器还包括限制电路，其利用晶体管与来自音频源的电流分流，与控制电路输出的控制信号成比例。 控制电路还可以包括低通滤波器，例如RC滤波器，以及一个或多个快速限制二极管路径。 限制电路还可以包括用于增加限制电路的线性特性的反馈网络。
-
公开(公告)号：US20110038491A1
公开(公告)日：2011-02-17
申请号：US12583139
申请日：2009-08-13
IPC分类号： H03G3/00
摘要： A passive sound pressure level (SPL) limiter is provided that can be used with audio sources of varying drive levels and headsets, earbuds, etc. of varying sensitivity. The SPL limiter includes a control circuit that includes a rectifier and, in most configurations, a step-up transformer. The SPL limiter also includes a limiting circuit that utilizes a transistor to shunt current from the audio source in proportion to a control signal output by the control circuit. The control circuit may further include a low pass filter, for example an RC filter, and one or more fast limit diode paths. The limiting circuit may further include a feedback network to increase the linear behavior of the limiting circuit.
摘要翻译： 提供了一种被动声压级（SPL）限制器，可用于不同驱动级别的音频源和不同灵敏度的耳机，耳塞等。 SPL限幅器包括一个控制电路，其包括整流器，并且在大多数配置中包括升压变压器。 SPL限幅器还包括限制电路，其利用晶体管与来自音频源的电流分流，与控制电路输出的控制信号成比例。 控制电路还可以包括低通滤波器，例如RC滤波器，以及一个或多个快速限制二极管路径。 限制电路还可以包括用于增加限制电路的线性特性的反馈网络。
-
公开(公告)号：US20110158414A1
公开(公告)日：2011-06-30
申请号：US13043313
申请日：2011-03-08
IPC分类号： H04R5/00
CPC分类号： H03G11/00
摘要： A passive sound pressure level (SPL) limiter is provided that can be used with audio sources of varying drive levels and headphones or earphones of varying sensitivity. The SPL limiter includes a control circuit and left and right channel limiting circuits, each of which includes a pair of FETS. The SPL limiter may include a balancing circuit that separates the control signal output by the control circuit into left and right channel control signals. The SPL limiter may also include a microphone, for example integrated into an earpiece cable.
摘要翻译： 提供了一个被动声压级（SPL）限制器，可用于不同驱动级别的音频源和不同灵敏度的耳机或耳机。 SPL限幅器包括控制电路和左，右通道限制电路，每个电路包括一对FET。 SPL限幅器可以包括将由控制电路输出的控制信号分离成左和右声道控制信号的平衡电路。 SPL限制器还可以包括麦克风，例如集成到耳机电缆中。
-
公开(公告)号：US08515084B2
公开(公告)日：2013-08-20
申请号：US13043313
申请日：2011-03-08
IPC分类号： H03G11/00
CPC分类号： H03G11/00
摘要： A passive sound pressure level (SPL) limiter is provided that can be used with audio sources of varying drive levels and headphones or earphones of varying sensitivity. The SPL limiter includes a control circuit and left and right channel limiting circuits, each of which includes a pair of FETS. The SPL limiter may include a balancing circuit that separates the control signal output by the control circuit into left and right channel control signals. The SPL limiter may also include a microphone, for example integrated into an earpiece cable.
摘要翻译： 提供了一个被动声压级（SPL）限制器，可用于不同驱动级别的音频源和不同灵敏度的耳机或耳机。 SPL限幅器包括控制电路和左，右通道限制电路，每个电路包括一对FET。 SPL限幅器可以包括将由控制电路输出的控制信号分离成左和右声道控制信号的平衡电路。 SPL限制器还可以包括麦克风，例如集成到耳机电缆中。
-
-
-
搜索结果
4 条记录 (耗时 0.012 秒)
