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The Fast Fourier Transform (FFT) allows users to view the spectrum content of an audio signal. The FFT code presented here was written by Don Cross though his homepage appears to have subsequently been taken down. Rather than explain the mathematical
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在vc6.0环境下对实时录入音频画wave波形，用快速傅立叶变换实现得到频谱。-Vc6.0 environment in real-time audio recording painting wave waveform, using Fast Fourier Transform has been the realization of the spectrum.
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吉他调弦，相当于ap guitar tuner-This article shows how to use a Fast Fourier Transform (FFT) algorithm to calculate the fundamental frequency of a captured audio sound. Also, we will see how to apply the algorithm to analyze live sound to build a simple guit
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本音频信号分析仪由32位MCU为主控制器，通过AD转换，对音频信号进行采样，把连续信号离散化，然后通过FFT快速傅氏变换运算，在时域和频域对音频信号各个频率分量以及功率等指标进行分析和处理，然后通过高分辨率的LCD对信号的频谱进行显示。该系统能够精确测量的音频信号频率范围为20Hz-10KHz，其幅度范围为5mVpp-5Vpp，分辨力分为20Hz和100Hz两档。测量功率精确度高达1 ,并且能够准确的测量周期信号的周期，是理想的音频信号分析仪的解决方案。-The audio signal ana
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使用direct x 实现音频的播放并且通过快速傅立叶变换将频谱可视化显示出来。-Using direct x for audio playback and fast Fourier transform of the spectrum through visual display.
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vc6.0环境下编写的基于快速傅里叶变换(FFT)的音频采集和播放代码，采用mfc设计的采集和播放界面，并能实时的看到声音波形。-vc6.0 environment prepared based on Fast Fourier Transform (FFT) audio capture and playback code, mfc design capture and playback interface, and can see the sound waveforms in real time
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vc6.0编写的基于快速傅里叶变换(FFT)的音频采集和播放代码，应用程序编程源码。-vc6.0 prepared based on the fast Fourier transform (FFT) of audio capture and playback code, application programming source code.
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基于labwindows平台开发的音频信号采集、分析系统，用计算机的声卡做信号采集，c语言编程，比较完整的用户界面，采用快速傅里叶变换处理数据。-Based on labwindows platform development of audio signal acquisition and analysis system, using computer sound card to do signal acquisition, c language programming, relatively
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