If you can’t answer 30 questions, it’s time to go back to the drawing board.1. 20 Basic Knowledge Test Questions on Bluetooth Audio1. What are the commonly used encoding formats in Bluetooth audio? (List at least 3) 2. What are the main improvements in audio transmission from Bluetooth 5.0 compared to Bluetooth 4.2? 3. What is BLE Audio? What advantages does it have over traditional Bluetooth audio? 4. What is the main role of the A2DP protocol in Bluetooth audio transmission? 5. Briefly describe the characteristics and application scenarios of SBC encoding. 6. What factors mainly affect the “latency” in Bluetooth audio? 7. What is a Bluetooth dual-mode device? What are the two modes it includes? 8. What function does the AVRCP protocol serve in Bluetooth audio? 9. Briefly describe the technical characteristics and advantages of LDAC encoding. 10. What is the role of “frequency hopping technology” in Bluetooth audio transmission? 11. What is a Bluetooth Mesh network? What significance does it have for audio devices? 12. What is the typical transmission power range for Bluetooth audio devices? How does it affect transmission distance? 13. Briefly describe the adaptive characteristics of aptX Adaptive encoding. 14. What are the main “interference sources” in Bluetooth audio? How can interference be reduced? 15. What is a Bluetooth address (BD_ADDR)? What is its function? 16. What factors are related to the battery life of Bluetooth audio devices? 17. Briefly describe the main functions and application scenarios of the HFP protocol. 18. What new LE Audio-related technologies were introduced in Bluetooth 5.2? 19. What is “Bluetooth audio synchronization”? How is synchronization ensured when connecting multiple devices? 20. What does compatibility testing for Bluetooth audio devices mainly include? 2. 20 Bluetooth Audio Debugging Questions 1. If you find that Bluetooth audio has a “choppy” issue during debugging, what could be the possible causes? How to troubleshoot? 2. How can adjusting the Bluetooth transmission power optimize the balance between audio transmission distance and stability? 3. When there is “background noise” in Bluetooth audio, what debugging methods are available from both hardware and software perspectives? 4. When debugging multi-device connections (such as one-to-two headphones), how can you resolve audio synchronization issues? 5. How can adjusting encoding format parameters (such as bitrate, sampling rate) optimize audio quality and latency? 6. When a Bluetooth audio device frequently disconnects from a phone, what are the troubleshooting steps? 7. If you find an imbalance in volume between the left and right channels during debugging, what could be the causes and adjustment methods? 8. How can you use spectrum analysis tools to identify interference frequencies in Bluetooth audio transmission and avoid them? 9. What specific debugging strategies can be employed for “excessive latency” in Bluetooth audio (such as in gaming or video scenarios)? 10. When debugging BLE Audio devices, how can you optimize broadcast packet parameters to reduce power consumption while ensuring connection speed? 11. How can you improve the stability of Bluetooth audio devices in complex environments (such as shopping malls or subways) through debugging? 12. How can you adjust the buffer size of the audio codec to balance latency and anti-packet-loss capability? 13. If you find distortion in audio quality under aptX encoding mode during debugging, what could be the causes and solutions? 14. When networking multi-brand Bluetooth speakers, how can you debug to achieve a “stereo surround” effect? 15. If a Bluetooth audio device’s microphone picks up noise, how can you debug from the RF and audio pathway perspectives? 16. How can you use log analysis tools to locate the causes of packet loss in Bluetooth audio transmission? 17. When debugging the “touch wake voice assistant” feature of Bluetooth headphones, if the response delay is too high, how can you optimize it? 18. How can you ensure compatibility when debugging interconnection between devices of different Bluetooth versions (such as 4.2/5.0/5.2)? 19. If a Bluetooth audio device experiences audio stuttering at low battery levels, what power management parameter issues could be present and how can they be adjusted? 20. When debugging devices that support LDAC encoding, how can you resolve instability in transmission at high bit rates?