{"version":"1.0","type":"rich","title":"Pitch Detector","description":"The Pitch Detector maps live audio input to an animated Torque visualization of car GPS tracks over the Nürburgring. Using the Web Audio API’s `AnalyserNode` and `ScriptProcessor`, it computes the average frequency amplitude from the microphone and dynamically resizes and recolors torque markers via `setCartoCSS`, with larger markers and brighter colors for louder pitches. The map, rendered with CartoDB.js on a canvas, pauses when volume drops and resumes when it rises again, creating a real-time audio-reactive display.","provider_name":"VizHub AI Studio","provider_url":"https://next.vizhub.com","html":"<iframe src=\"https://next.vizhub.com/viz/gist-adb44dcdcf30ee449e87?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"1\"></iframe>","width":960,"height":500,"cache_age":3600}