目前流行的数码音响和AV设备广泛采用了数字接口。许多接口实现一线多功能传送,利用的是双相符号编码(Biphase-mark encoding)的格式。常用的索尼/菲利浦数字接口格式S/PDIF就采用了这种格式。但在电缆中传送这种双相符号信息时很容易“污染”系统时钟,产生串扰,使系统的质量变差,而且很不容易将其根除。由于接收到的双相信号使系统的时钟产生新的“跳动”,还会引起模拟音频信号的失真。 为了降低这种数据传输模式对串音的敏感性、消除系统 Currently popular digital audio and AV equipment widely used digital interface. Many interfaces implement first-line multi-purpose delivery using the Biphase-mark encoding format. Commonly used Sony / Philips digital interface format S / PDIF used this format. However, transmitting such two-phase symbolic information in a cable can easily “contaminate” the system clock, creating crosstalk, degrading the quality of the system and making it less easy to eradicate. As the received two-phase signal to the system clock to produce a new “beating”, but also cause analog audio signal distortion. In order to reduce the sensitivity of this data transmission mode to crosstalk, eliminate the system