A new binary joint transform correlator (BJTC) with high pass filtering is.

提出一种新的采用高通滤波的二元联合变换相关器。

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Unlike our other versions, this one has no high pass filtering on the outputs.

不像我们的其他版本，这其中没有高通滤波的输出。

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Compared with common audio signal processing attacks such as MP3 compression, low-pass filtering etc., they are more difficult to manage.

与mp3音频压缩、低通滤波等常规的音频信号处理攻击相比，同步攻击更加难以抵抗，已经成为研究界的一个公开难题。

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Most often, researchers have used laser sources, filtering down their trillions of output photons in a bid to allow just one to pass.

BBC: Quantum key distribution with single photons