北京联合大学学报（自然科学版）
北京聯閤大學學報（自然科學版）
북경연합대학학보（자연과학판）
Journal of Beijing Union University(Natural Sciences)
2015年
4期
13-18
,共6页
张明%樊昌元%张东明%李龙飞
張明%樊昌元%張東明%李龍飛
장명%번창원%장동명%리룡비
频谱检测仪%滤波%FPGA%FFT%IP核
頻譜檢測儀%濾波%FPGA%FFT%IP覈
빈보검측의%려파%FPGA%FFT%IP핵
Spectrum detector%Filtering%FPGA%FFT%IP core
对声音信号进行频谱分析,是认识声音信号和处理声音信号的重要方法,因而基于声音信号频谱检测具有重要的意义. 通过使用FPGA微处理器对声音信号频谱进行检测,并通过Altera公司的Quartus Ⅱ软件、相关IP核以及硬件描述语言VHDL完成对声音信号的采集、量化、存储、快速傅里叶变换( FFT)、滤波、计算声强等一系列功能,通过测试实现了声音频谱的前端监测,同时结合VGA直观地显示动态信号特征,真正达到了对声音信号频谱的动态监测. 经过实验验证,该设计可以准确检测出声音信号频谱并动态地显示出来.
對聲音信號進行頻譜分析,是認識聲音信號和處理聲音信號的重要方法,因而基于聲音信號頻譜檢測具有重要的意義. 通過使用FPGA微處理器對聲音信號頻譜進行檢測,併通過Altera公司的Quartus Ⅱ軟件、相關IP覈以及硬件描述語言VHDL完成對聲音信號的採集、量化、存儲、快速傅裏葉變換( FFT)、濾波、計算聲彊等一繫列功能,通過測試實現瞭聲音頻譜的前耑鑑測,同時結閤VGA直觀地顯示動態信號特徵,真正達到瞭對聲音信號頻譜的動態鑑測. 經過實驗驗證,該設計可以準確檢測齣聲音信號頻譜併動態地顯示齣來.
대성음신호진행빈보분석,시인식성음신호화처리성음신호적중요방법,인이기우성음신호빈보검측구유중요적의의. 통과사용FPGA미처리기대성음신호빈보진행검측,병통과Altera공사적Quartus Ⅱ연건、상관IP핵이급경건묘술어언VHDL완성대성음신호적채집、양화、존저、쾌속부리협변환( FFT)、려파、계산성강등일계렬공능,통과측시실현료성음빈보적전단감측,동시결합VGA직관지현시동태신호특정,진정체도료대성음신호빈보적동태감측. 경과실험험증,해설계가이준학검측출성음신호빈보병동태지현시출래.
Frequency spectrum analysis of the sound signal is an important method to understand the sound signal and the sound signal processing. So the study of sound signal based on spectrum detection becomes more and more important. In this article, the system makes sound signal spectrum detection come true by using Field-Programmable Gate Array ( FPGA ) microprocessor. Using Altera company 's Quartus Ⅱ software, IP core and hardware description language ( VHDL ) , we have written a series of functional programs to control FPGA to realize the complete sound signal acquisition, storage, quantization, fast fourier transform ( FFT ) , filtering, calculation of sound intensity. According to the test, we basically get the audio spectrum of the front end of the monitoring process. Meanwhile, in order to achieve a visual display, this study also discusses how to realize FPGA to drive VGA interface and integrate with the front end of the monitoring process, which really makes the sound signal spectrum of the dynamic monitoring come true. In this experiment, the design can detect sound signal spectrum accurately and the result can be displayed dynamically.
