SPDIF/HDMI Sound Keeper v1.0.0 [2014/12/24]

Prevents SPDIF/HDMI digital playback devices from falling asleep. Uses WASAPI, requires Windows 7+. To close the program you may mute the Sound Keeper in the Volume Mixer or simply kill soundkeeper.exe process. Copy soundkeeper.exe to the startup subdirectory in the Start Menu if you don't like to run it manually after every system reboot.

Download: SoundKeeper-v1.0.zip (11KB).


  • Sound Keeper is fully automatic and doesn't require any user interaction.
  • Sound Keeper can keep sound on many digital sound outputs simultaneously (e.g. SPDIF and HDMI).
  • Sound Keeper detects new digital sound outputs on the fly (e.g. when you connected TV via HDMI).

Sound Keeper vs. SPDIF Keep Alive

Sound Keeper v1.0 SPDIF Keep Alive v1.2
Fully automatic: Yes No
Multiple outputs: Yes No
GUI: No Yes
Requires .NET: No Yes
Executable size: 17KB 668KB
CPU usage (on Intel Core i5 4460): 0.004% 0.06%
RAM usage (Private Working Set): 1636KB 13704KB