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公开(公告)号：USD401774S
公开(公告)日：1998-12-01
申请号：US68833
申请日：1997-03-20
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公开(公告)号：USD414770S
公开(公告)日：1999-10-05
申请号：US69255
申请日：1997-03-20
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公开(公告)号：US06937912B1
公开(公告)日：2005-08-30
申请号：US09543852
申请日：2000-04-05
申请人： Robert A. Orban
发明人： Robert A. Orban
CPC分类号： H03G11/008
摘要： A method for computing the “clippings” of an audio signal in the digital domain to prevent aliasing is disclosed. An offset signal is found by subtracting a threshold from samples of the audio signal. These are multiplied by a pulse after the pulse is lined up in time with the crossing of the audio signal at the threshold. The pulse is the sum of two step functions, both of which are bandwidth-limited.
摘要翻译： 公开了一种用于计算数字域中音频信号“剪切”以防止混叠的方法。 通过从音频信号的采样中减去阈值来发现偏移信号。 在脉冲与阈值处的音频信号的交叉之后，脉冲被及时排列时，它们被乘以脉冲。 脉冲是两步功能的总和，它们都是带宽限制的。
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公开(公告)号：USD398289S
公开(公告)日：1998-09-15
申请号：US69257
申请日：1997-03-20
申请人： Jonathan C. Burke
设计人： Jonathan C. Burke
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公开(公告)号：US5737434A
公开(公告)日：1998-04-07
申请号：US703026
申请日：1996-08-26
申请人： Robert Orban
发明人： Robert Orban
CPC分类号： H03G7/06
摘要： An audio peak limiter suitable for use between a compressor and pre-emphasis circuit. The limiter uses a center clipper to develop a control signal for a 1/x control law VCA. The center clipping, after rectification, is sampled-and-held for 4 milliseconds by a retriggerable sample-and-hold circuit then low-pass filtered. The compressed audio is delayed for 4 milliseconds before being coupled to the VCA. The VCA acts as a modulator to provide control of its peak output level while simultaneously limiting the bandwidth of the modulation sidebands caused by the modulation process, so that these sidebands are better masked psychoacoustically than sidebands that would be caused by simple clipping of the compressed audio.
摘要翻译： 适用于压缩器和预加重电路之间的音频峰值限制器。 限幅器使用中心裁剪器开发1 / x控制律VCA的控制信号。 整流后的中心限幅采样保持电路4毫秒，然后进行低通滤波。 压缩音频在耦合到VCA之前延迟4毫秒。 VCA用作调制器来提供其峰值输出电平的控制，同时限制由调制过程引起的调制边带的带宽，使得这些边带比由压缩音频的简单剪切引起的边带更好地被心理地屏蔽 。
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