v0.3 doesn't seem to work for me. It says it's playing my favorite kind of music ( :P ) but the speaker never makes the initial crackle sound that would indicate audio is playing, and the volume mixer doesn't show any indication that any audio is being played. And when other audio does play, it begins with the crackling that this app is meant to help avoid.

v0.2 does work for me configured at 10 Hz at 0.1 volume, but has some issues which I'm not sure you can fix. When I put my computer to sleep and wake it up again in the morning, it doesn't seem to be playing audio anymore. I think this may have something to do with the fact that my PC has to reconnect to the BT speaker, which changes the output audio temporarily. My guess is that your app doesn't handle changes to the audio device and doesn't recover from that. But once I stop it and start it up again, it works like a charm until the next time I put my PC to sleep.

I had an old Pentium I computer with a combo modem/soundcard that had issues staying connected to the internet when a system sound played (system would lock up just long enough to kick me offline), unless there was sound continuously flowing through the soundcard at all times. This meant playing music all the time, and usually keeping the speakers turned off if I didn't want to hear it, till I came across a small app capable of playing continuous low frequency tones that my cheap speakers were unable to produce. (25 Hz did the trick)

-app103 (December 18, 2020, 11:13 PM)

I originally made a reply here asking about this app, and got a few responses and a solution. But since it wasn't really related to Windows 10, those posts have been split off into a new thread here:

Program to play inaudible sound continuously

Old solutions for new problems....

I had an old Pentium I computer with a combo modem/soundcard that had issues staying connected to the internet when a system sound played (system would lock up just long enough to kick me offline), unless there was sound continuously flowing through the soundcard at all times. This meant playing music all the time, and usually keeping the speakers turned off if I didn't want to hear it, till I came across a small app capable of playing continuous low frequency tones that my cheap speakers were unable to produce. (25 Hz did the trick)

Flash forward to a couple of days ago, when a screwy Windows feature update, which I am unable to uninstall, messed up my bluetooth, so that no matter how I have the hardware settings configured, it turns Bluetooth off (to save power) when it thinks it is not in use. This is very BAD for a bluetooth mouse. I reported here about this issue in this thread, and was avoiding reinstalling that update for as long as possible, but Microsoft managed to automatically cram it down my throat when I recently rebooted my machine, despite having updates paused till some time in January.

BUT I noticed it doesn't cut off my mouse if I have sound playing through my bluetooth headphones. So, I am back to using that very old app, to generate a continuous 10 Hz tone, just so I can use my mouse.

I had to use the system volume mixer to set the volume of this app at a very low level, since my bluetooth headphones are capable of producing audible sound generated from this app, at even the lowest (10 Hz) setting.

-app103 (December 18, 2020, 11:13 PM)

Do you have a link to that app, app?

About 6 months ago I moved my entire PC setup into another room, and when I plugged in my speakers to the power source (a surge protector), they made a very loud POP sound, and ever since then none of the audio jacks on my PC work. So now I've got a bluetooth speaker connected to my PC, but it has the unfortunate problem of taking half a second to "warm up" (or catch up?) whenever some audio is played for the first time after a few seconds of silence. And it's like it receives and plays that first half-second of audio all at once, making an unpleasant (and relatively loud) popping or crackling sound in the speaker as it begins to play audio.

I figure if I could trick it into thinking it is constantly playing audio, then it would stay "awake" and not have this issue. Then I remembered you mentioned playing an inaudible, low frequency sound to help with your BT issues and so here I am, asking about it. :D