传输(电信)
音频信号
以太网音频
音频
多路复用
频分复用
电子工程
计算机科学
波分复用
频道(广播)
传动系统
电信
音频信号处理
工程类
波长
光学
正交频分复用
物理
声压
语音编码
作者
Chu Wuyang,Chaoliang Guan,Jing Gong,Ruijie Zhou,Yikai Zhou,Yihao Zhang,Shanshan Hu
标识
DOI:10.1016/j.yofte.2023.103395
摘要
To meet sound transmission requirements in complex work environments, this paper constructs a passive audio pickup sensor based on an extrinsic Fabry-Perot interferometer (EFPI) and develops a one-way four-channel passive audio parallel transmission system based on a passive bidirectional audio over fiber(PB-AOF) transmission system and wavelength division multiplexing technology. The system realizes optical fiber audio transmission over a distance of 20 km. The experimental results show that the signal-to-noise ratio (SNR) is greater than 64 dB, and the highest sensitivity of the four channels in the proposed system is 1.06 V/Pa. Thus, the proposed long-distance terminal passive audio communication network is ideally suited for applications in certain fields.
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