An Improved Frame Loss Concealment Algorithm Based on the Mixed Excitation Linear Prediction

2014 ◽  
Vol 599-601 ◽  
pp. 1387-1392
Author(s):  
Qiang Li ◽  
Fang Tian
Keyword(s):  
Linear Prediction ◽  
Speech Quality ◽  
Synthetic Speech ◽  
Prediction Algorithm ◽  
Lagrange Polynomial ◽  
The Future ◽  
Mixed Excitation Linear Prediction

An improved frame loss concealment algorithm based on the Mixed Excitation Linear Prediction (MELP) is presented in this paper. It introduces the Future frame to recover the lost frame and the intermediate frame (U/V frame and V/U frame) to determine the type of lost frame more accurately. Meanwhile, it proposes the Lagrange polynomial approach algorithm and the linear prediction algorithm to recover the parameters of lost frames in different frame types. The PESQ-MOS test shows that the synthetic speech quality has been improved with the algorithm which this paper has proposed.

scholarly journals Gaining phonetic knowledge whilst improving synthetic speech quality?

1991 ◽  
Vol 19 (1) ◽  
pp. 139-146 ◽  
Author(s):  
Louis C.W. Pols ◽  
Renée van Bezooijen
Keyword(s):  
Speech Quality ◽  
Synthetic Speech

scholarly journals Data Fusion of Multivariate Time Series: Application to Noisy 12-Lead ECG Signals

2018 ◽  
Vol 9 (1) ◽  
pp. 105 ◽  
Author(s):  
Chen Diao ◽  
Bin Wang ◽  
Ning Cai
Keyword(s):  
Data Fusion ◽  
Linear Prediction ◽  
Fuzzy Inference ◽  
Multivariate Time Series ◽  
Quality Characteristics ◽  
Prediction Algorithm ◽  
Ecg Signals ◽  
Fusion Data ◽  
Ecg Signal Processing ◽  
Inference Systems

Twelve-lead Electrocardiograph (ECG) signals fusion is crucial for further ECG signal processing. In this paper, based on the idea of the local weighted linear prediction algorithm, a novel fusion data algorithm is proposed, which was applied in data fusion of the 12-lead ECG signals. In order to analyze the signal quality comprehensively, the quality characteristics should be adequately retained in the final fused result. In our algorithm, the values for the weighted coefficient of state points were closely related to the final fused result. Thus, two fuzzy inference systems were designed to calculate the weighted coefficients. For the sake of assessing the performance of our method, synthetic ECG signals and realistic ECG signals were applied in the experiments. Experimental results indicate that our method can fuse the 12-lead ECG signals effectively with inherit the quality characteristics of original ECG signals inherited properly.

Comparative Evaluation of Listeners Perceptions on Synthetic Speech Quality

2019 ◽  
Vol 11 (11-SPECIAL ISSUE) ◽  
pp. 967-971
Author(s):  
Quennie Joy B. Mesa ◽  
Kyung-Tae Kim ◽  
Jing-Jon Kim
Keyword(s):  
Comparative Evaluation ◽  
Speech Quality ◽  
Synthetic Speech

scholarly journals Voice and Position Simultaneous Communication System Based on Beidou Navigation Constellation

2020 ◽  
Vol 38 (5) ◽  
pp. 1010-1017
Author(s):  
Zhen Ao ◽  
Feng Li ◽  
Qiang Ma ◽  
Guiqing He
Keyword(s):  
Communication System ◽  
Linear Prediction ◽  
Voice Conversion ◽  
Prediction Algorithm ◽  
Short Message ◽  
Navigation Systems ◽  
Analysis Program ◽  
Data Format ◽  
Voice Communication ◽  
The Voice

Considering China Beidou has unique two-way communication capability for short messages that are not available in other navigation systems such as GPS, a 600bps vocoder adapted to the short message channel of Beidou is developed. The sinusoidal excitation linear prediction algorithm is adopted by the vocoder to achieve voice communication with clear communication quality. Furthermore, a coordinate compression algorithm for processing positioning information is designed to provide more transmission space for speech encoded data. Based on the above-mentioned results, a communication system that only the Beidou navigation system is used to complete two-way secure voice and positioning simultaneous interpretation is realized. The system firstly uses a voice conversion program to convert the voice coded data obtained by the vocoder codec module into the Beidou short message data format; and then the voice code analysis program and the latitude and longitude analysis program is used to parse the voice code and location information; Finally, the experimental results of voice communication and positioning transmission are verified on the Beidou short message transceiver, and the subjective MOS test score indicates that the way is paved for the practical use of Beidou short message voice communication.

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