文章基本信息

标题：An Efficient Time Domain Speech Compression Algorithm Based on LPC and Sub-Band Coding Techniques
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作者：Venkateswaran, Palaniandavar ; Sanyal, Arindam ; Das, Snehasish 等
期刊名称：Journal of Communications
印刷版ISSN：1796-2021
出版年度：2009
卷号：4
期号：6
页码：423-428
DOI：10.4304/jcm.4.6.423-428
语种：English
出版社：ACADEMY PUBLISHER
摘要：Speech compression is a mature technology with many applications. Over the past decade, huge advances have been made in the area of speech coding for reduced bit-rate transmission. With perceptual audio coding, the signal is coded efficiently using a psychoacoustic model, as in MPEG standards. In this paper, two well known algorithms, LPC (Linear Predictive Coding) and subband coding are combined to reduce data transmission rate from 128 Kbps to as low as 12 Kbps at minimum complexity and implemented on a digital signal processor. The performance of the proposed algorithm is almost same as the MPEG algorithm without its complexity.
关键词：Digital signal processors; Levinson-Durbin algorithm; Linear Predictive Coding; RELP; subband coding