What is Humm - Share the Vibe exactly? It captures a few second unprocessed audio sample from the surroundings and runs fft on it to calculate relevant metrics, which are largely hardware agnostic. These are used to come up with a shareable ambience score for Focus/Party I built this since I realised a photo on social media can't express the exact environmental vibe, and this app just tries to partially fill up that lack of detail.