How to prevent audio from being cut at the start when using Bluetooth headphones on Linux?

After a period of silence, when playing an audio file the start of the audio is cut off when using a Bluetooth headphone, because of the device's power saving features. This is fine most of the time, but when using Anki I need to listen to the entire audio being played without having to play it again. On Linux, is there a way to temporarily prevent the headphone from entering stand-by mode without changing the settings of the headphone (would need permanent connection with my phone) and without making changes that require reboots (so I can disable and enable on demand)? My current solution is

Question by Jeff on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.