1、 环绕音箱无线传输系统的制作环绕音箱无线传输系统的制作 Making voice wireless surround speakers 20201111 年年 6 6 月月 I 摘摘 要要 本文以 CD4046 芯片、TDA7000 收音机集成芯片为基础，构造了一款环绕音箱 的传输系统。本文设计制作了两个发射电路组成的发射系统，并分别对这两个发射电 路进行了调试，采用锁相环技术使之在发射过程中的两列载波形成相位差，从而达到 环绕音质。为制作方便，解调电路中的还原声音部分直接采用 TDA7000 收音机集成 电路。调制与解调部分采用红外无线传输方式构造成的传输系统，避免了设备连接线 连接时的突兀
2、杂乱，影响视觉效果和家居环境。本设计采用红外线传输，在短距离传 输下，既可以达到传输目的，又具有抗干扰能力强、高速可靠、无电磁污染、价格低 廉、性价比高、不受国家限制、工作频率较高等特点，作为家庭影院的无线传输方式 是一种非常理想的选择。本文在设计制作过程中还考虑了成本问题，以便达到经济又 可靠的效果。 关键词：关键词： 环绕音箱；无线传输；TDA7000 II ABSTRACT This paper based on CD4046 chip, TDA7000 radio integrated chips as the foundation, to construct a paragraph
3、surround speakers transmission system. This paper designed and made two launch circuit launch system, and composed of the two launch respectively by commissioning, the circuit of phase lock loop technique in the two columns carrier liftoff formed, thus achieved the surround sound quality difference.
4、 For making the convenience, the reduction sound part demodulating circuit directly TDA7000 radio by integrated circuits. Modulation and demodulation part adopts infrared wireless transmission structure formed transmission system, to avoid the equipment connecting the abrupt cluttered, connected to influence visual effect and household environment. This design USES the infrared transmission, in short, can achieve transmission, and has transmitted purpose anti-jamming ability, high-speed reli
