汽车音响电路的设计与制作 毕业论文.doc

毕业设计（论文） 汽车音响电路的设计与制作 Title: Car audio circuit design and making 班 级 学生姓名 学号 _ 指导教师 职称 导师单位 论文提交日期 2011-11-23 摘要 在汽车音响领域，人们一直在追求这样一种效果：坐在汽车里如同坐在舞台前，所有的声音都是从挡风玻璃处发出来的，闭上眼睛，就如同感受到深处处演唱会现场，每种乐器的音响都可以达到最佳的重播效果。 音响系统主要分为两部分，功率放大器和音箱组成，功率放大器主要是针对音频信号进行功率放大，本文介绍了具有信号放大能力的功率放大器的基本原理、内容、技术路线。整个电路主要由稳压电源、前置放大器、音调调节、左右声道放大器、重低音放大器共五部分组成。稳压电源主要是为前置放大器、重低音滤波电路提供稳定的直流电源。前置放大器主要是电压放大。左右声道放大器、重低音放大器实现电流、电压的放大。设计的电路结构简洁、充分利用到了集成功放的优良性能。实验结果表明该功率放大器在带宽、失真度、效率等方面具有较好的指标、较高的实用性，为功率放大器的设计提供了广阔的思路。音响用来还原声音。 关键词：前置放大级电路 调音电路 后级放大电路 电源电路 英文翻译 In the field of car audio, people have been in the pursuit of such an effect: sitting in the car like sitting in front of the stage, all the voice from the windshield to send out, close your eyes, just like the feeling deep at the concert scene, each kind of musical instrument sound can achieve the best effect of the replay. The sound system is mainly divided into two parts, power amplifier and speaker, a power amplifier is mainly directed against the audio signal for power amplification, this article describes a signal amplifier power amplifier principle, content, technical route. The entire circuit is mainly composed of a regulated power supply, amplifier, tone control, left and right channel amplifier, subwoofer amplifierb contains five part Regulated power supply is mainly for the preamplifier, the bass filter circuit provides stable DC power supply. The preamplifier is mainly the voltage amplification. The left and right channels amplifier, subwoofer amplifier realization electric current, the voltage amplifier. Design of the circuit structure is simple, use, make full use of to a set of successful performance. Experimental results show that the power amplifier efficiency in bandwidth, distortion, and has better index, high practicality, for power amplifier design provides a broad thinking. To restore the voice of soun