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Fairphone unveils Fairbuds 2 with replaceable battery, Sony LDAC and ANC
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Bluetooth has a delay for most codecs. Do not ask me how it is exactly done but there is a feedback to the application so that it delays audio to match video for the bluetooth delay. Some years ago a new Linux audio subsystem was developed, and this thing did not work at start but they fixed it later. From that time is my memory.