此举堪称人类首次在计算机上对声音进行数字化、存储以及检索。
It was the first time ever sound was digitized, stored, and retrieved on a computer.
数字水印技术是用信号处理的方法在声音，图像或视频等数字化多媒体数据中嵌入隐蔽信息的行为。
Digital watermarking is the technology that embeds secret information into digital multimedia data such as sound, image or video by using signal processing technology.
他们把声音进行数字化，然后通过四分之一无线电传播器把数据广播出来。
They digitize sound and broadcast the data through quarter size radio transmitters.
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