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17.11: Sound Visualization: Frequency Analysis with FFT - p5.js Sound Tutorial

In this video, I use the p5.FFT object to analyze the frequencies (spectrum array) of a sound file. I create a "graphic equalizer" like visualization. Code: https://thecodingtrain.com/tracks/sou... 🕹️ p5.js Web Editor Sketch: https://editor.p5js.org/codingtrain/s... 🎥 Previous:    • 17.10: Sound Visualization: Radial Gr...   References: 🔗 p5.sound library: https://p5js.org/reference/#/librarie... 🔗 p5.FFT: https://p5js.org/reference/#/p5.FFT 🔗 this.dot song:   / this-dot-feat-daniel-shiffman   Related Coding Challenges: 🚂    • Coding Challenge 11: 3D Terrain Gener...   🚂    • Coding Challenge 125: Fourier Series   🚂    • Coding Challenge #136.1: Polar Perlin...   Timestamps: 0:00 Introduction 0:43 p5.FFT object 1:27 Wikipedia page about FFT 1:59 Explain the algorithm 2:34 Amplitude at different frequency levels 2:57 Bins must be a power of 2 3:23 Add a p5.FFT object to sketch 4:16 Use analyze() to get the amplitude values along the frequency domain. 4:56 Default length of array is 1024 bins 6:16 Loop through the array 7:23 Values range between 0 and 255 8:50 Reduce the number of bins to 64 9:24 Space out the lines 9:59 Change the lines to rectangles 11:02 Add the smoothing - default is 0.8 12:59 Change to a circle 14:47 Adjust mapping to get full circle 16:19 Draw lines from the center 16:52 Suggestions for possible variations Editing by Mathieu Blanchette Animations by Jason Heglund Music from Epidemic Sound 🚂 Website: https://thecodingtrain.com/ 👾 Share Your Creation! https://thecodingtrain.com/guides/pas... 🚩 Suggest Topics: https://github.com/CodingTrain/Sugges... 💡 GitHub: https://github.com/CodingTrain 💬 Discord: https://thecodingtrain.com/discord 💖 Membership: http://youtube.com/thecodingtrain/join 🛒 Store: https://standard.tv/codingtrain 🖋️ Twitter:   / thecodingtrain   📸 Instagram:   / the.coding.train   🎥    • Coding Challenges   🎥    • Start learning here!   🔗 p5.js: https://p5js.org 🔗 p5.js Web Editor: https://editor.p5js.org/ 🔗 Processing: https://processing.org 📄 Code of Conduct: https://github.com/CodingTrain/Code-o... This description was auto-generated. If you see a problem, please open an issue: https://github.com/CodingTrain/thecod... #soundvisualization #frequencyanalysis #fft #p5js