[1]陈 坚,盛庆华,毛礼建,等.基于STM32的音频信号分析仪的设计与实现[J].工业仪表与自动化装置,2016,(03):19-21.
　CHEN Jian,SHENG Qinghua,MAO Lijian,et al.The design and implementation of audio analyzer based on STM32[J].Industrial Instrumentation & Automation,2016,(03):19-21.

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基于STM32的音频信号分析仪的设计与实现(PDF)

《工业仪表与自动化装置》[ISSN:1000-0682/CN:61-1121/TH]

卷:

期数:

2016年03期

页码:

19-21

栏目:

出版日期:

2016-06-15

文章信息/Info

Title:

The design and implementation of audio analyzer based on STM32

文章编号:

1000-0682(2016)03-0000-00

作者:

陈 坚; 盛庆华; 毛礼建; 翟依依

（杭州电子科技大学 生命信息与仪器工程学院，杭州310018）

Author(s):

CHEN Jian; SHENG Qinghua;  MAO Lijian;  ZHAI Yiyi

(College of Life Information Science & Instrument Engineering, Hangzhou Dianzi University, Hangzhou 310018, China)

关键词:

音频信号分析仪; 频谱分析; 快速傅里叶变换; 失真度

Keywords:

audio signal analyzer;  spectral analysis;  fast fourier transformation;  distortion

分类号:

TN912

DOI:

-

文献标志码:

A

摘要:

本文主要论述了基于STM32F407VET6单片机的音频信号分析仪的具体实现。输入信号先经过信号调理电路处理后，经高性能12位并行ADS7819采样后再进入STM32控制器。该系统采用基-2时间抽取FFT算法分析音频信号的频谱，这样大大降低了运算量。此系统可以分析音频信号频谱和测量正弦信号失真度。可测量输入信号的频谱范围为20Hz~10kHz，输入电压幅值范围（峰-峰值）为5 mV~5 V。此外，系统还可以判定输入信号的周期性并测量其周期等功能。

Abstract:

This article mainly elaborated the realization in detail of monolithic integrated circuit audio signal analyzer based on the STM32F407VET6 Micro Control Unit (MCU). After processed by the signal conditioning circuit, the input signal are sampled by a high performance 12 bit parallel ADS7819 before entering STM32 controller. This system is based on the 2-D FFT algorithm, which can reduce the calculation. This system can analyze speech signal spectrum and calculate the distortion of sine signal. The peak voltage of input signal ranges from 5 mV to 5 V, with the frequency ranging from 20 Hz to 10 kHz. Besides, the system can also realize some functions, such as periodic/non-periodic signal judgement, period measurement and etc.

参考文献/References:

[1] 孙科学,张瑛,刘艳,等.基于NiosII的音频信号分析仪设计[J].计算机技术与发展.2012, 22(8):196-199.

相似文献/References:

[1]曹 胜,陈嘉强,李佳豪,等.双通道周期信号分离装置的设计与实现[J].工业仪表与自动化装置,2024,(01):18.[doi:DOI:10.19950/j.cnki.CN61-1121/TH.2024.01.004]
　CAO Sheng,CHEN Jiaqiang,LI Jiahao,et al.Design and implementation of a dual channel periodic signal separation device[J].Industrial Instrumentation & Automation,2024,(03):18.[doi:DOI:10.19950/j.cnki.CN61-1121/TH.2024.01.004]

备注/Memo

备注/Memo:

收稿日期：2015-08-24

基金项目：国家海洋局海洋生态系统与生物地球化学重点实验室基金项目(LMEB201408)；国家级大学生创新创业训练计划(GJ201310336004)

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