音量自适应系统的研制

摘要

Objective Design a system of auto voice control in the great noise condition. Methods The key of system is SCM, including of PIC 16F 76、M 62429、74 LS 164 and LM 324. In the during of measuring noise, the system controls voice with being attenuated. Results The system is measured in the great noise condition, can automatically work in voice, and display the voice number.%目的：研制一种能够跟随外部环境噪声变化，自动调节音量大小的系统。方法：系统使用单片机控制技术，由PIC 16F 76、M 62429、74 LS 164和LM 324构成。通过实时测量外部噪声大小，对音量进行衰减量大小控制调节。结果：通过测试，系统能够在强噪声环境下，实现音量自动调节，并具有实时显示功能。