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1. 发明授权

US5619582A Enhanced concert audio process utilizing a synchronized headgear system 失效
标题翻译：使用同步头饰系统增强音乐会音频流程
公开(公告)号：US5619582A
公开(公告)日：1997-04-08
申请号：US585774
申请日：1996-01-16
申请人： Randy Oltman , Perry L. Nusbaum
发明人： Randy Oltman , Perry L. Nusbaum
IPC分类号： H04R1/10 , H04B5/02 , H04R3/12 , H04R5/033 , H04S1/00 , H04R27/00
CPC分类号： H04S1/007
摘要： An audio enhancement system and method is provided wherein a wireless headphone system comprises a transmitter and a receiver including a synchronization device which utilizes electromagnetic locating signals to locate the position of the receiver with respect to the transmitter. The transmitter for this system will broadcast a frequency modulated (FM) signal on a number of separate channels in the 900 MHz band range. Each channel will carry the same audio information, however, each successive channel will have its audio signal delayed by a preset time period, e.g. 50 ms, relative to the previous channel. The headset receiver, supporting position location signals, and associated hardware will select the appropriate channel depending on the listener's distance from the main loudspeakers. These channels are laid out such that when in a large venue, and if the proper channel is chosen, the sound received electronically over the wireless channel will be approximately in phase with the sound arriving to the listener from the main loudspeakers.
摘要翻译：提供了一种音频增强系统和方法，其中无线耳机系统包括发射机和接收机，其包括使用电磁定位信号来定位接收机相对于发射机的位置的同步装置。该系统的发射机将在900 MHz频带范围内的多个独立信道上广播频率调制（FM）信号。每个通道将携带相同的音频信息，然而，每个连续的频道将其音频信号延迟预设的时间段，例如，相对于上一个通道为50 ms。耳机接收器，支持位置信号和相关硬件将根据收听者与主扬声器的距离来选择适当的频道。这些通道布置成使得当在大的场所中，并且如果选择了适当的通道，则通过无线信道电子接收的声音将与从主扬声器到达听众的声音大致相同。

2. 发明授权

US5822440A Enhanced concert audio process utilizing a synchronized headgear system 失效
标题翻译：使用同步头饰系统增强音乐会音频流程
公开(公告)号：US5822440A
公开(公告)日：1998-10-13
申请号：US835205
申请日：1997-04-07
申请人： Randy Oltman , Perry L. Nusbaum , Ken Schaffer , David Jakubowski
发明人： Randy Oltman , Perry L. Nusbaum , Ken Schaffer , David Jakubowski
IPC分类号： H04R1/10 , H04B5/02 , H04R3/12 , H04R5/033 , H04S1/00 , H04R27/00
CPC分类号： H04S1/007
摘要： An audio enhancement system and method is provided wherein a wireless headphone system comprises a transmitter and a receiver. The transmitter for this system broadcasts a Direct Sequence Spread Spectrum (DSSS) CDMA signal on a number of separate code channels in the 902-928 MHz ISM band. Each successive code channel will have its audio signal delayed by a preset period, e.g. 30 mS, relative to the previous channel. A reference signal on one or more separate time synchronized code channels will be simultaneously transmitted from multiple dedicated transmitters within the venue. Analysis of these multiple code channels by the electronics in the headset will provide the headset with an approximate radial distance from the stage. The headset receiver, supporting position location signals, and associated hardware will select the appropriate audio code depending on the listener's distance from the main loudspeakers. These code channels are laid out such that when in a large venue, and if the proper channel is chosen, the sound received electronically over the wireless channel will be slightly behind the phase of the sound arriving to the listener from the main loudspeakers. The headgear associated with this system also enhances the quality of the music delivered to the transient listener.
摘要翻译：提供了一种音频增强系统和方法，其中无线耳机系统包括发射机和接收机。该系统的发射机在902-928 MHz ISM频段的多个独立的代码信道上广播直接序列扩频（DSSS）CDMA信号。每个连续的代码通道将其音频信号延迟预设的时段，例如，相对于上一个通道30 mS。在一个或多个单独的时间同步码信道上的参考信号将同时从场内的多个专用发射机发送。通过耳机中的电子设备分析这些多个代码通道将为耳机提供与舞台近似的径向距离。耳机接收器，支持位置信号和相关硬件将根据收听者与主扬声器的距离选择适当的音频代码。这些代码通道布置成使得当在大型场所中，并且如果选择了正确的通道，则通过无线信道以电子方式接收的声音将稍微落在从主扬声器到达听众的声音的相位之后。与该系统相关联的头饰还增强了传递给暂时听众的音乐的质量。

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