About
Every other room acoustics app needs a microphone and tells you what your room is already doing. Nodeline needs nothing but the room's dimensions and tells you what it is going to do, so you can move the chair before you buy a single panel. You type the length, the width and the height, say what the walls, the floor and the ceiling are made of, and put two speakers and a listening chair on a plan seen from above. From that it computes the physics. Every standing wave the dimensions produce, sorted by frequency and marked axial, tangential or oblique, with the ones that vanish at your chair flagged, and the ones that vanish only because you are sitting on the room's centre line marked separately, because every stereo listener sits in those and moving off centre costs more than it saves. One of those modes painted across the floor plan with its node lines drawn: violet where the note disappears, gold where it piles up, calm in between, which is where you want to be. The predicted bass response at your ear from twenty to two hundred hertz, computed by summing every mode with the damping your own materials produce, where zero decibels means this seat gets what an average seat in this room gets. The exact point on each wall, the ceiling and the floor where sound from each speaker bounces into your ear, how many milliseconds late it arrives and the frequency it notches, which is the mirror trick every studio does with a friend and a hand mirror, computed to the centimetre instead. Reverberation time by Sabine and by Eyring across six octave bands from twenty six surface materials, plus the Schroeder frequency, above which the room stops behaving like a set of resonances. And then the thing none of that describes: you drag the chair across the plan with your finger, and the field repaints and the curve redraws under it, in the same frame, so you can feel your way to the spot where the null is not on your head. There is no account, no server, no network and no microphone. The dimensions of your home never leave the phone.
Features
- Drag the chair and watch the standing wave and the bass curve follow your finger
- Every room mode, with the ones missing at your chair flagged
- First reflection points computed on every wall, the ceiling and the floor
- Reverberation by Sabine and Eyring across six octave bands, from 26 materials
- A treatment plan that says where each panel goes and what it will leave behind
- No microphone, no account, no network, and nothing leaves your phone