计算机工程与应用2011，Vol.47Issue(9)：142-145,4.DOI:10.3778/j.issn.1002-8331.2011.09.042
基于SPIHT编码的语音信号压缩算法
Speech compressing algorithm based on SPIHT coding
摘要
Abstract
This paper proposes a new coding algorithm of speech compressing,which is based on best wavelet packet transform and SPIHT coding algorithm.The new approach applies the wavelet packet transform to process speech signal to obtain optimal wavelet tree to allocate the dynamic bits,and then uses the modified SPIIT coding algorithm to compress the coefficients from the wavelet packet transform.The entropy coding is also used to increase the compression ratio.The experiments indicate that the new approach can obtain better reconstructed speech signal quality under the condition of bigger compression ratio and have a low-complexity and low-delay.关键词
语音信号/最佳小波包变换/多级树集合分裂排序(SPIHT)算法/压缩编码Key words
speech signal/best wavelet packet transform/Set Partitioning In Hierarchical Trees(SPIHT) algorithm/compression coding分类
信息技术与安全科学引用本文复制引用
赵丹,马胜前,郑杰..基于SPIHT编码的语音信号压缩算法[J].计算机工程与应用,2011,47(9):142-145,4.基金项目
甘肃省科技攻关项目资助(No.2GS047-A52-002-07) （No.2GS047-A52-002-07）
西北师范大学科技创新工程项目资助(No.NWNU-KJCXGC-03-24). （No.NWNU-KJCXGC-03-24）
