That burst of white noise can be annoying. It sounds like a decoding issue. Try adjusting the audio settings on your Oppo player. Check if there's an option to delay audio output slightly to sync it with your Yamaha receiver's decoding. You might also want to ensure that both your player and receiver are updated to the latest firmware. If the problem persists, reach out to the Oppo support community; they might have specific solutions for this scenario.