Audio-keepawake is a program that periodically plays inaudible sounds in the low-frequency range. The purpose of the application is to keep audio devices active and running that would otherwise go into standby. In particular, KRK ROKIT 5 studio monitors have this annoying and impossible to disable standby feature that makes them automatically turn off unless a loud sound is played once in a while. This application ensures the speakers stay on while the PC is running.
This application is a GUI-less cross-platform implementation of Rokit Monitor Anti Standby (RMAS).
Please note that, depending on your use-case, you will have to fine-tune some parameters in the C code, namely the audio device name that should be kept awake (audio->dev_name) and other properties like how long the interval is between playing the inaudible sounds (audio->callback_delay_ms).
To build, pre-requisites are gcc and SDL2 development libraries, which can be obtained with:
sudo apt install build-essential
sudo apt install libsdl2-dev
sudo apt install libsdl2-mixer-devThen, on Linux with systemd, simply running:
./build.sh
./install.shwill do the job (installs the application for the current user).