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    • 21. 发明授权
    • Speaker configuration for a portable electronic device
    • 便携式电子设备的扬声器配置
    • US06785395B1
    • 2004-08-31
    • US10452336
    • 2003-06-02
    • Theodore R. ArnesonMark A. BarabolakGiles T. Davis
    • Theodore R. ArnesonMark A. BarabolakGiles T. Davis
    • H04R2500
    • H04R1/2842H04M1/03H04R1/1091H04R1/2834H04R1/2849
    • A portable device includes a speaker with an active vent fed by a front of a speaker diaphragm and a larger passive vent fed by a rear of the speaker diaphragm. The outputs of the active and passive vents are acoustically coupled to respective active and passive ports, coupled together outside of the housing within an ear placement region for a user of the portable electronic device to obtain a more uniform frequency response from the speaker configuration over a larger region of a user's ear placement possibilities than would be available with the active vent alone. This is accomplished by a close acoustic coupling of the ports in combination with diverse porting of active and passive acoustic signals. The passive path also serves to relieve pressure near a user's ear to improve signal quality.
    • 便携式装置包括扬声器,扬声器具有由扬声器振膜的前部馈送的主动通风口和由扬声器振膜的后部馈送的较大的被动通风口。 有源和无源通风口的输出声学耦合到相应的主动和被动端口,在便携式电子设备的用户的耳朵放置区域内耦合在壳体外部,以便从扬声器配置获得更均匀的频率响应 用户的耳朵放置的可能性大于单独使用活动通气口的较大区域。 这是通过端口的紧密声耦合与有源和无源声信号的多种端口组合来实现的。 被动路径还用于缓解用户耳朵附近的压力,以提高信号质量。