ArduinoFFT库是将输入模拟信号转换为频谱的代码的核心。我发现这个库易于使用,并为该项目生成了最准确的输出。Prototype配置为生成64个样本,并使用这些样本进行FFT。ArduinoFFT库可以对16到128之间的样本进行FFT,这可以在程序中进行配置。但arduinoFFT库计算速度慢,有128个样本,因此我坚持64个样本中最好的最高。
Testing a simple fixed fast Fourier transform library using the Arduino Nano with a 0.96" OLED screen and a MAX9814 as the audio input. - RattleBrattle/Fixed-FFT-Spectrum-Analyzer
问在Arduino上生成FFT和解码ENFFT 即快速傅立叶变换。在很多计算机领域都用用处，例如数字图像处理、计算...
We tested the IIS3DWB against a hand-held Wahl Trimmer device. The IIS3DWB was mounted on top of the Dragonfly as shown above, and the Dragonfly was held by hand against the Wahl Trimmer. The 2048-bin FFT spectrum with the HPF filter set at 33 Hz (-3dB, ODR/800, maximum bandwidth...
1、使用易于安装的库 arduinoFFT 和 MD_MAX72xx。 2、支持五种不同的显示模式,可通过按钮切换。 3、音频信号的左右声道都是混合的,不会错过任何节拍。 4、原型使用 32×8 LED 点阵,你可以随意改变。 5、音频可以从耳机输入或播放设备的Line-Out输入。 项目流程图 原理图 系统原理描述 Arduino 板(ATmega328P...
Introduction: Arduino FFT Spectrum Analyzer on VFD Display GP1287 By mircemkFollow More by the author: How to make an simple audio FFT spectrum analyzer on a 256x50 pixel VFD display. Supplies Arduino Nano R3 GP1287 VFD Display Potentiometer, 10 kohm Resistor 10k ohm x 2 Capacitor 10 ...
fftAnalyzer.read(spectrum,length); 参数 频谱:将频谱值读入的整数数组 length:频谱数组参数的数组长度 返回 存储在频谱阵列参数中的频谱值的数量 示例 /* This example reads audio data from an InvenSense ICS-43432 I2S microphone breakout board, and prints out the spectrum to the Serial Monitor. The ...
fftAnalyzer.available(); 返回 如果频谱分析可供读取,则为 1,否则为 0。 示例 /* This example reads audio data from an InvenSense ICS-43432 I2S microphone breakout board, and prints out the spectrum to the Serial Monitor. The Serial Plotter built into the Arduino IDE (Tools -> Serial Plotter...
Any program that interfaces with RTL-SDR to see an FFT or waterfall view of the spectrum will suffice. RTL-SDR We use the RTL-SDR codebase to listen and save the signal (via rtl_fm), however you can simply use GQRX or SDRSharp mentioned above to save the signal if you prefer. ...