| 基于STM32的音频信号分析设计与实现 |
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| 引用本文： | 梁方舟,李金泉,黄训磊,王玉花.基于STM32的音频信号分析设计与实现[J].现代电子技术,2014(1):19-21. |
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| 作者姓名： | 梁方舟 李金泉 黄训磊 王玉花 |
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| 作者单位： | 北方工业大学信息工程学院,北京100144 |
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| 摘 要： | 基于ARM Cortex-M3内核的32位处理器STM32F103和快速傅里叶变换(FFT)算法实现了音频信号频谱的分析。整个系统由前级信号调理、A/D采样电路、CPU运算电路和LCD显示电路等组成。实验表明,系统能够检测20 Hz10 kHz范围内的频率成份并显示音频信号频谱,该方案成本低,具有一定的应用价值。
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| 关 键 词： | 音频信号 FFT STM32 基-4时间抽取 |
Design and implementation method of STM32-based audio signal analysis |
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| LIANG Fang-zhou,LI Jin-quan,HUANG Xun-lei,WANG Yu-hua.Design and implementation method of STM32-based audio signal analysis[J].Modern Electronic Technique,2014(1):19-21. |
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| Authors: | LIANG Fang-zhou LI Jin-quan HUANG Xun-lei WANG Yu-hua |
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| Affiliation: | (College of Information Engineering, North China University of Technology, Beijing 100144, China) |
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| Abstract: | The spectrum analysis of audio signal is implemented by ARM Cortex-M3-based 32 bit processor STM32F103 and FFT algorithm. The system includes signal-processing stage, A/D sampling circuit, CPU computing circuit and LCD display circuit. Experiment result shows that the system can detect frequency component from 20 Hz to 10 kHz and display audio signal spectrum. This scheme has a lower cost and application value. |
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| Keywords: | audio signal FFT STM32 DIT4 |
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