NetEase Cloud Music Tech Team
Sep 17, 2020 · Mobile Development
Android Audio Visualization: From Fourier Transform to Custom Visualizer Implementation
The article explains Android audio visualization by decoding PCM data, applying Fourier and Fast Fourier transforms to obtain frequency spectra, comparing the built‑in Visualizer API with a custom JNI‑based implementation, and detailing FFT processing, smoothing, buffering, and Canvas rendering techniques for smooth, performant visual effects.
AndroidAudio VisualizationBufferQueue
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