[1]李慧,胡永兵,姚梦茹.基于UCOSIII 系统的音频信号分析设计与实现[J].计算机技术与发展,2018,28(07):130-133.[doi:10.3969/ j. issn.1673-629X.2018.07.028]
　LI Hui,HU Yong-bing,YAO Meng-ru.Design and Implementation of Audio Signal Analysis Based on UCOSIII System[J].,2018,28(07):130-133.[doi:10.3969/ j. issn.1673-629X.2018.07.028]
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基于UCOSIII 系统的音频信号分析设计与实现()
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《计算机技术与发展》[ISSN:1006-6977/CN:61-1281/TN]

卷:
28
期数:
2018年07期
页码:
130-133
栏目:
应用开发研究
出版日期:
2018-07-10

文章信息/Info

Title:
Design and Implementation of Audio Signal Analysis Based on UCOSIII System
文章编号:
1673-629X(2018)07-0130-04
作者:
李慧; 胡永兵; 姚梦茹
安徽大学 计算智能与信号处理教育部重点实验室,安徽 合肥 230601
Author(s):
LI Hui; HU Yong-bing; YAO Meng-ru
Key Laboratory of Intelligent Computing &Signal Processing of Ministry of Education,Anhui University,Hefei 230601,China
关键词:
音频信号; UCOSIII 系统; 播放; STM32; 频谱
Keywords:
audio signal; UCOSIII system; play; STM32; spectrum
分类号:
TN919
DOI:
10.3969/ j. issn.1673-629X.2018.07.028
文献标志码:
A
摘要:
传统的音频信号分析设备功能全、精度高,但这些设备不但体积大、结构复杂、反应速度慢、适应范围窄,而且造价非常昂贵,影响了它在小型化系统中的应用。 针对这些问题,设计以 STM32103 单片机为运算核心,采用 UCOSIII 嵌入式多任务操作系统。 放大与滤波电路组成了前级电路。 模拟信号经过前级电路后,通过 A/ D 转换,录音到 SD 卡中,再使用FFT 运算电路计算后,同时进行音频播放与频谱显示。 硬件设计主要包括前级信号调理模块、STM32 音频转换模块、LCD显示模块。 在软件设计上,采用 UCOSIII 嵌入式多任务操作系统,实现多任务运行。 通过 UCOSIII 系统实现对20 kHz 以下音频信号的分析,支持播放与频谱显示同时进行。 该设计具有体积小、反应速度快、成本低等优点。
Abstract:
The traditional audio signal analysis devices have full functions and high precision,but they are not only with large volume,complicated structure,slow reaction speed and narrow application range,also with the expensive cost,which affect its application in the miniaturization of system. For this,with STM32103 micro-controller as the operation core,we adopt UCOSIII embedded multitasking operating system. The front-end circuit is composed of amplifier circuit and filter circuit. The analog signal through the front-end circuit,and the A/ D conversion,the tape to the SD card,then the calculation by FFT operation circuit,at the same time playback of audio and display spectrum. The hardware design includes the front-end signal conditioning module,STM32 audio conversion module and LCD display module. In the software design,by using the UCOSIII embedded multitasking operating system,the task is realized to run. The UCOSIII system is adopted to analyze the audio signal under 20 kHz,supporting playback and spectrum display simultaneously. This design has small volume,fast response speed and low cost.
更新日期/Last Update: 2018-09-04