I am currently working on an Android audio visualizer using connected smart home devices (such as Philips hue) to visualize music. I have trouble compensating the delay caused by bluetooth speakers.
I have noticed, that the Youtube app, in difference to many other video streaming apps, has almost no delay between audio and video, when using bluetooth speakers. I figure, that they must compensate for the bluetooth latency by adjusting (delaying) the video signal.
Is there a reasonable way of detecting or approximating the latency/delay of bluetooth speakers?
Thank you very much for you help!!
Best, Stefan
This would not work for Bluetooth speakers. However, I have been able to measure the audio latency of a Bluetooth dongle using Google's Dr. Rick O'Rang loopback dongle, using Glenn Kasten test app.
来源：https://stackoverflow.com/questions/35139179/detect-or-approximate-bluetooth-latency-on-android-audio-playback