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本文介绍了2009年参加全国大学生电子设计竞赛制作声音导引系统的方案。其特色在于使用四阶Butterworth带通滤波器对声音信号进行处理,使其更趋稳定,抗干扰能力更强。经测试系统很好的完成了题目基本要求部分的全部功能和发挥部分的指标,且系统设计性价比高,功耗低。此文是获得全国大学生电子设计竞赛一等奖的作品。
This article describes the 2009 National Undergraduate Electronic Design Contest production voice guidance system program. Its characteristic lies in using the fourth-order Butterworth band-pass filter to deal with the sound signal, make it more stable, anti-interference ability is stronger. The test system completed a good part of the basic requirements of the title of the full function and part of the indicators, and the system design cost-effective, low power consumption. This article is the first prize winner of the National Undergraduate Electronic Design Contest.