When using the JBL Flip 3 (or JBL Flip 2 or JBL Flip 4) as a permanent speaker for music or Text-to-speech announcements, connected through the AUX input and powered consantly it still goes into an automatic standby after some time of silence and it's a major problem in this use case. Depending on how long the silence was and how loud the new input audio is, it may take between 3 to 30 seconds in my experience before it resumes playing. For lack of a better place I'm posting here the information I have on solving this.
- Obviously emitting the audio signal at maximum volume from the computer and lowering the volume at the speaker reduces the time for it to wake up. Downsides: less volume control for the computer (especially problematic if it's remotely controlled), still won't work if the audio played is relatively quiet or short (such as a home-automation announcement) so not a definitive solution.
- Mixing unaudible waveforms into the audio output, either low frequency (< 20Hz) or high (> 15kHz). Downs