Pro version of the spectral audio analyser. Selectable bandwidth up to 24 kHz, flexible amplitude and frequency mapping through touch and scroll, different update speeds and colour mappings. Accurate display of high-pitch or even ultrasonic tones, environmental noise or rumble… .Accurate real-time measurement feature allows detection and analysis of live audio. Spectrograms can be saved as png or jpg files to sd-card.Bugs and feedback to: [email protected]