Plot the raw audio waveform (amplitude vs. time). The waveform shows how loud the sound is at each point in time. Drone sounds typically show a very regular oscillation pattern. Plot a Short-Time ...
A self-contained audio analysis instrument running entirely on a Seeed XIAO ESP32-S3 Sense. The on-board PDM MEMS microphone is sampled at 16 kHz, processed by a 1024-point real FFT on-chip, and ...