Deep brown noise for focus, for the macOS menu bar.
Single-purpose menu bar app that generates deep brown noise locally and plays it on loop. Install it, click play, forget about it. Cumulative-sum brown noise through a Butterworth bandpass (1 to 500 Hz, 20 Hz sub-bass highpass), RMS-normalized per chunk, crossfaded at boundaries. Everything is stored in ~/.lowhum/. Playback streams through PortAudio via memory-mapped files, so the full WAV never sits in RAM. The app polls audio devices every 2 seconds and stops instantly if headphones disconnect or a Bluetooth device drops.
Menu bar controls
The menu bar icon is a template image, so macOS handles dark/light mode automatically. Further, use it for:
Play / Stop from the menu bar
Pick any connected audio device from the Output Device submenu
This software can be used to search scales & chords from a large and expandable database (XML). Thanks to the jmusic project (jmusic.sourceforge.io), this is also possible to generate music starting from these scales & chords and export the result to MIDI file.
Sine generator combines individual sine or square waves into a single waveform. Parameters are frequency, frequency modulation, noise, phase, volume and wave type.
A programmable audio generator intended as an aural aid to meditation, implementing the binaural beat principle as described in Gerald Oster’s Oct. 1973 Scientific American article “Auditory Beats in the Brain.”
