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Real-time Scrolling Spectrogram

Spectrogram of a banded wren from the Cornell Lab of Ornithology website You can build a real-time audio spectrogram that can display a spectrum of audio signals. Using two microcontrollers and a little knowhow, your system can display frequency spectrum content from a microphone or an audio line-in using 4-bit grayscale scrolling on any NTSC […]
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