| 高春丽,王扬,朱嘉林,吴鸣,杨军.环形扬声器阵列的警报系统设计*[J].,2019,38(5):857-861 |
| 环形扬声器阵列的警报系统设计* |
| Design of alarm system based on ring speaker array |
| 投稿时间：2018-11-05 修订日期：2019-09-03 |
| 中文摘要: |
| 针对工厂车间中局部异常需警报及时提醒的情况，设计一款36通道的环形音频警报系统，实现局部警报声播放的效果，并验证所设计系统的可行性。为达到输入输出实时运算的目的，该基于环形扬声器阵列的警报系统以高性能数字信号处理为核心展开，通过多通道模拟数字转换器、数字模拟转换器及功率放大器等硬件电路，利用最小二乘法将警报信号传递到相应区域。在全消声室环境下，该系统通过PC机产生单频信号，实现了音频的指向性，验证了所设计系统的可行性。 |
| 英文摘要: |
| A 36-channel ring audio alarm system was designed to provide a local alarm sound playback system and verify the feasibility of the designed system. For the purpose of real-time operation of input and output, the ring-shaped audio local alarm system is developed with high-performance digital-signal-processor as the core, and the alarm signal is transmitted to the corresponding area by the least square method through hardware circuits such as multi-channel analog-to-digital converter, digital-to-analog converter and power amplifier. In the full anechoic chamber environment, the system generates single-frequency signals through a PC, which realizes the directivity of the audio and verifies the feasibility of the designed system. |
| DOI：10.11684/j.issn.1000-310X.2019.05.015 |
| 中文关键词: 36通道环形音频警报系统 最小二乘法 单频 指向性 |
| 英文关键词: 36-channel ring audio alarm system the least squares method single-frequency signal directivity |
| 基金项目: |
|
| 摘要点击次数: 1608 |
| 全文下载次数: 1350 |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
