Prevents SPDIF/HDMI digital audio playback devices from sleeping. Uses WASAPI, requires Windows 7+.
To enable autorun, copy soundkeeper.exe into the startup directory (to open it, press Win+R, enter "shell:startup", press Enter). To close the program, just mute the Sound Keeper in the Volume Mixer or kill the soundkeeper.exe process.
- Sound Keeper is fully automatic and doesn't require any user interaction.
- Sound Keeper can keep sound on many sound outputs simultaneously (e.g. SPDIF and HDMI).
- Sound Keeper detects new sound outputs on the fly (e.g. when you connected a TV via HDMI).
- Default behavior can be changed by changing file name of the Sound Keeper executable.
- Primary audio output is used by default. Add "All" to executable file name to enable Sound Keeper on all outputs.
- Inaudible stream is used by default. Add "Zero" to executable file name to use stream of digital zeroes (like it was in v1.0.0).
If the default inaudible stream doesn't help, try the new "Sine" stream type. It generates a sine wave, and can be customized. There are two parameters: F (frequency) and A (amplitude). The value goes right after the parameter character. For example, add "SineF10A5" to executable file name to generate 10Hz sine wave with 5% amplitude. Low frequencies (below 20Hz) and high frequencies (above 20000Hz) with low amplitude (up to 10%) are inaudible.
Sound Keeper vs. SPDIF Keep Alive vs. SPDIF-KA
|Sound Keeper v1.0||SPDIF Keep Alive v1.2||SPDIF-KA v1.4|
|CPU usage (on Intel Core i5 4460):||0.004%||0.06%||0.06%|
|RAM usage (Private Working Set):||1636KB||13704KB||10600KB|