汽车实用技术 ›› 2022, Vol. 48 ›› Issue (4): 65-69.DOI: 10.16638/j.cnki.1671-7988.2023.04.013
• 设计研究 • 上一篇
侯学元
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HOU Xueyuan
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摘要: 为了实现对车载音频技术的优化与升级,设计实现了一种基于车载音频总线(A2B) 的车载音频功放电路,采用了 A2B 实现数字音频输入,采样、处理以及数模转换的功放输出 驱动扬声器播放音频的功能。该设计利用 A2B 线形拓扑结构,数字音频输入信号的接收、采 样、多通道音频模拟输出的功能。A2B 在音频性能提升的同时,采用更少的线缆,降低系统 和电缆的重量、复杂性,为车载音频设计提供简单、方便,且具备数字音频功放的通用性和 扩展性。
关键词: 车载数字音频;车载音频总线;音频功放
Abstract: In order to optimize and upgrade the vehicle audio technology, a vehicle audio power amplifier circuit based on the automotive audio bus (A2B) vehicle audio bus is designed and implemented. The A2B is used to realize the functions of digital audio input, sampling, processing and digital to analog conversion of the power amplifier output to drive speakers to play audio. The design uses A2B linear topology, digital audio input signal reception, sampling, multi-channel audio analog output functions. While the audio performance is improved, A2B uses fewer cables, reducing the weight and complexity of the system and cables, providing simple and convenient vehicle audio design, and has the versatility and scalability of digital audio power amplifier.
Key words: Vehicle digital audio; Automotive audio bus; Audio amplifier
侯学元. 基于车载数字音频功放系统电路设计[J]. 汽车实用技术, 2022, 48(4): 65-69.
HOU Xueyuan. Circuit Design Based on Vehicle Digital Audio Power Amplifier System[J]. Automobile Applied Technology, 2022, 48(4): 65-69.
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http://www.aenauto.com/CN/Y2022/V48/I4/65