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一、数字音频信号的传输 为了保证广播电视演播室的数字音频设备能够相互连接并安全地传输数字音频数据.AES/EBU(声频工程协会/欧洲广播联盟)于1992年修订了1985年制定的数字音频接口标准,即AES/EBU建议书AES3-1992“双通道线性表示的数字音频数据串行传输格式”。它对传输数据的格式及硬件接口电平、阻抗和接插件均有具体规定。目前国际上大多数专业数字音频设备都遵守这一标准,使用AES/EBU接口标志。 由于该标准所规定的音频数据比特率较低,串行传输就相对容易。例如,当采样
I. TRANSMISSION OF DIGITAL AUDIO SIGNALS To ensure that digital audio equipment in broadcast television studios can be connected to each other and securely transmit digital audio data, AES / EBU (Audio Engineering Association / European Broadcasting Union) revised the number established in 1985 Audio Interface Standard, AES / EBU AES3-1992, “Dual Channel Digital Representation of Digital Audio Data Serial Transmission Format.” It transmits data format and hardware interface level, impedance and connectors are specific requirements. At present, most professional digital audio equipment in the world complies with this standard and uses the AES / EBU interface mark. Serial transmission is relatively easy due to the low bit rate audio data specified by the standard. For example, when sampling