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首页> 外文期刊>International journal of speech technology >Simulation and overall comparative evaluation of performance between different techniques for high band feature extraction based on artificial bandwidth extension of speech over proposed global system for mobile full rate narrow band coder
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Simulation and overall comparative evaluation of performance between different techniques for high band feature extraction based on artificial bandwidth extension of speech over proposed global system for mobile full rate narrow band coder

机译：在移动全速率窄带编码器全球系统上基于语音的人工带宽扩展的高频带特征提取不同技术之间性能的仿真和总体比较评估

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摘要

This paper addresses a novel approach to investigate, study and simulate computation of high band (HB) feature extraction based on linear predictive coding (LPC) and mel frequency cepstral coefficient (MFCC) techniques. Further, HB features are embedded into encoded bitstream of proposed global system for mobile (GSM) full rate (FR) 06.10 coder using joint source coding and data hiding before being transmitted to receiving terminal. At receiver, HB features are extracted to reproduce HB portion of speech and for the same different extension of excitation techniques are applied and their results evaluated in terms of quality (intelligibility and naturalness) and bandwidth. MATLAB based e-test bench is created for implementing the proposed artificial bandwidth extension (ABE) coder following series of simulations, that are carried out to discover and gain insight about the performance of it using subjective [mean opinion score (MOS)] and objective [perceptual evaluation of speech quality (PESQ)] analysis. The results obtained for both the analyses advocate that proposed ABE coder outperforms proposed GSM FR NB (legacy GSM FR) coder. While the fact remains that, compared to LPC based parameterizations over ABE coder, MFCC parameterization results in higher speech intelligibility which is evident from obtained slightly better PESQ and MOS scores.
机译：本文提出了一种新的方法，用于研究，研究和模拟基于线性预测编码（LPC）和梅尔频率倒谱系数（MFCC）技术的高频带（HB）特征提取的计算。此外，HB特征在被发送到接收终端之前使用联合源编码和数据隐藏被嵌入到提出的用于全球移动（GSM）全速率（FR）06.10编码器的全球系统的编码比特流中。在接收机处，提取HB特征以重现语音的HB部分，并且对于相同的激励技术扩展应用相同的特征，并根据质量（可理解性和自然性）和带宽来评估其结果。创建了基于MATLAB的电子测试平台，用于在一系列模拟之后实施拟议的人工带宽扩展（ABE）编码器，以使用主观[均值分（MOS）]和目标来发现并获得有关其性能的见解[语音质量的感知评估（PESQ）]分析。两种分析所获得的结果都表明，拟议的ABE编码器优于拟议的GSM FR NB（传统GSM FR）编码器。尽管事实仍然存在，与通过ABE编码器进行基于LPC的参数化相比，MFCC参数化导致更高的语音清晰度，这从获得更好的PESQ和MOS得分中可以明显看出。

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