| 基于LPC2138的AES3数字音频接口设计 |
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| 引用本文： | 李俊锋,周南. 基于LPC2138的AES3数字音频接口设计[J]. 电子设计工程, 2012, 20(10): 150-154 |
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| 作者姓名： | 李俊锋 周南 |
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| 作者单位： | 电子科技大学电子工程学院,四川成都,610054 |
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| 摘 要： | 随着数字音频技术的不断发展,数字化音频设备已广泛应用于广播电视节目领域。鉴于专业数字音频设备越来越多地需求,以及专用接收发送设备的复杂性,本设计采用Philips公司的ARM7控制芯片LPC2138结合音响设备专用芯片,设计一个简单的AES/EBU(AES3)数字音频收发系统,实现了专业AES3数字音频的接收与发送。实验显示,在输入1 kHz,24 dBu时,本设计的总谐波失真小于0.005%,信噪比大于90 dBu。
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| 关 键 词： | 数字音频 LPC2138 AES3 接收 发送 总谐波失真 信噪比 |
Design of the interface about AES3 digital audio based on LPC2138 |
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| LI Jun-feng,ZHOU Nan. Design of the interface about AES3 digital audio based on LPC2138[J]. Electronic Design Engineering, 2012, 20(10): 150-154 |
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| Authors: | LI Jun-feng ZHOU Nan |
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| Affiliation: | (School of Electronic Engineering,Uiniversity of Electronic Science and Technology of China,Chengdu 610054,China) |
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| Abstract: | With continuous development of digital audio technology,digital audio device has been widely used in the field of radio and television program.In view of the increasing demand for professional digital audio equipment,and the complexity of dedicated receiver and transmitter,this design mainly uses ARM7 microcontroller LPC2138 from Philips,to realize a simple system for AES/EBU(AES3) digital audio reception and transmission with other dedicated audio equipment chip.The experiment shows that the total harmonic distortion is less than 0.005%,and signal to noise ratio is greater than 90dBu when input signal is 1kHz,24dBu. |
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| Keywords: | digital audio LPC2138 AES3 receiver transmitter THD SNR |
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