Robust Bluetooth Call Streaming with Frame-Overlapped Transmission and High Efficient Speech Compression
Sanghoon Lee, Hyunwook Kim, Han-gil Moon · 2023 IEEE International Conference on Consumer Electronics (ICCE) · 2023
Robust Bluetooth call streaming based on the frame-overlapped transmission is introduced to improve the perceived speech quality as well as to mitigate the chopping problem of BT call. The presented method utilizes the proprietary speech compression which has two times higher coding gain. The frame-overlapping manner makes use of this room to contain two consecutive speech frames (one for the present and the other one for the next) in a present packet. Therefore, smartphones or wearable devices can get the second chance of decoding the coded speech in the next packet even when they miss the present packet due to the poor wireless environment or the heavy air traffic. The performance of the proposed method was evaluated on two criteria, packet error rate and speech quality. The assessment results showed that the error rate on the receiving side is improved by a large margin while the objective speech quality is preserved as good as that of the standard method.