Audio Expert System: aptX 'hiccup' Detected

This paper presents a case study in Bluetooth® audio debugging that highlights the importance of Frontline's Audio Expert System (AES) in the process. The actual case involves transmission of a high quality, stereo audio using the aptX codec from a smartphone to a Bluetooth headset. The transmission contained SBC encoded packets despite a successful negotiation of aptX encoding and decoding mechanism between the source and the sink devices. Frontline's AES software discovered this transmission error which most likely would not have been easily discovered by using traditional Bluetooth protocol and event analysis. Without the Audio Expert System a product may have been shipped that was not performing as expected by the manufacturer.