Upload any call and see its frequency content over time
Supported formats: MP3, WAV, OGG, M4A, and more
1. Upload Audio: Click the upload area or drag & drop an audio file
2. View Spectrogram: The frequency visualization will appear automatically
3. Play Audio: Click the Play button or click anywhere on the spectrogram to jump to that position
4. Download YouTube Audio: Use yt-dlp -x --audio-format mp3 [URL]