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    • 31. 发明申请
    • ERROR CORRECTION FOR ULTRASONIC AUDIO SYSTEMS
    • 超声波音频系统的错误校正
    • US20160174003A1
    • 2016-06-16
    • US14566592
    • 2014-12-10
    • Turtle Beach Corporation
    • Brian Alan KappusElwood Grant Norris
    • H04R29/00
    • H04R29/00H04R3/04H04R2217/03
    • Systems and methods for removing or reducing distortion in an ultrasonic audio system can include receiving a first audio signal, wherein the first audio signal represents audio content to be reproduced using the ultrasonic audio system; calculating a first error function for the ultrasonic audio system, the first error function comprising an estimate of distortion introduced by reproduction of the audio content by the ultrasonic audio system; transforming the first audio signal into a first pre-conditioned audio signal by combining the first error function with the first audio signal; and modulating the transformed audio signal onto an ultrasonic carrier.
    • 用于去除或减少超声波音频系统中的失真的系统和方法可以包括接收第一音频信号,其中第一音频信号表示要使用超声波音频系统再现的音频内容; 计算超声波音频系统的第一误差函数,第一误差函数包括由超声波音频系统再现音频内容引入的失真的估计; 通过将第一误差函数与第一音频信号组合,将第一音频信号变换成第一预处理音频信号; 并将变换的音频信号调制到超声波载波上。
    • 33. 发明申请
    • Parametric transducer headphones
    • 参数换能器耳机
    • US20160057529A1
    • 2016-02-25
    • US14545351
    • 2015-04-27
    • Turtle Beach Corporation
    • Brian Alan KappusElwood Grant NorrisJames A. Barnes
    • H04R1/10
    • H04R1/1008H04R1/1058H04R1/1075H04R15/00H04R17/00H04R2217/03
    • An ultrasonic audio headphone system includes two ultrasonic speakers, each having a backing plate and a flexible layer disposed adjacent the backing plate. The backing plate and the flexible layer are each configured to be electrically coupled to a respective one of a pair of signal lines carrying the audio modulated ultrasonic carrier signal from the amplifier, wherein upon application of the audio modulated ultrasonic carrier signal, the flexible layer is configured to launch a pressure-wave representation of the audio modulated ultrasonic carrier signal into the air. The ultrasonic audio headphone system can further include a frequency mismatched microphone to avoid feedback when the microphone and the ultrasonic speakers are, e.g., proximately located.
    • 超声波音频耳机系统包括两个超声波扬声器,每个具有背板和邻近背板布置的柔性层。 背板和柔性层各自被配置为电耦合到一对信号线中的一个,该一对信号线承载来自放大器的音频调制的超声波载波信号,其中在应用音频调制的超声波载波信号时,柔性层是 被配置为将音频调制的超声波载波信号的压力波表示发射到空气中。 超声波音频耳机系统还可以包括频率不匹配的麦克风,以在麦克风和超声波扬声器例如近似定位时避免反馈。